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(1 نما 1 ضحه) Kingdom of Saudi Arabia ELECTRICITY & CO-GENERATION REGULATORY AUTHORITY Board of Directors المملكه العربيه السعوديه متدنديل المرار والانتج المرار و مجلس الاداره كود التوزيع للكهرباء المعتمد بقرار مجلس اداره هييه تنظيم الكهرباء والانتاج المزدوج رقم (٢٩-١٨-٤) وTARBY ٤١٢٩/٥/٢ الزجليه لعتا لعتا لعتا لعتا لعتا لعتا لعتا لعتا هيتدنظهمالكراء، الابتجاع الدوع ELECTRICITY & CO-GENERATION REGULATORY AUTHORITY The Saudi Arabian Distribution Code Issue: 01 Revision:00 November 2008 Prepared by: Saudi Electricity company (SEC) No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, mechanical, photocopying, recording or otherwise, without written permission of the Electricity & Cogeneration Regulatory Authority. The Saudi Arabia Distribution Code CHRONOLOGY OF SAUDI ARABIA DISTRIBUTION CODE REVISIONS <table><tr><td>Sr. No.</td><td>Revision No.</td><td>Date</td><td>Detail of the revision</td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>[0x6x]</td><td></td><td></td><td></td></tr><tr><td>[0x6x]</td><td></td><td></td><td></td></tr><tr><td>[0x6x]</td><td>[0x6x]</td><td>[0x6x]</td><td>[0x6x]</td></tr><tr><td>[0x6x]</td><td>[0x6x]</td><td>[0x6x]</td><td>[0x6x] [0x6x]</td></tr><tr><td>[0x6x]</td><td>[0x6x]</td><td>[0x6x]</td><td>[</td></tr></table> Issue, 01; Revision, 00 (November 2008) The Saudi Arabia Distribution Code Forward The Distribution Code is designed to indicate the procedures for both planning and operational purposes and covers both normal and exceptional circumstances. It is however a live working document. It will be, from time to time, subject to change and/or revision to reflect stages of development of the regulatory framework of the industry and changes to comply with legislation and good industry practice. The proposals for change will be received by the Distribution Code Review Panel (“DCRP”). The rules and responsibilities of the DCRP are described in chapter DGC6. Upon receipt of such proposals for change, the DCRP will carry out the necessary process as appropriate to study these proposals and officially prepare a report of recommendations to ECRA for its approval. The DCRP is a stakeholders representation panel and its members are outlined in chapter DGC6.3 of the Distribution Code. As a User of this Distribution Code, it is your responsibility to ensure that you possess the most up to date issue. Issues of the Distribution Code can be downloaded from ECRA's web site www.ecra.gov.sa. This Preface is provided to Users and to prospective Users for their information only and does not constitute a part of the Distribution Code. Issue, 01; Revision, 00 (November 2008) The Saudi Arabia Distribution Code Preface The Saudi Arabia Distribution Code has been developed to define the rules and regulations for various participants for accessing and using the Distribution System. The objective is to establish the obligations of the distribution service providers (DSP's) and other system Users- TSP, Embedded Generators, other distribution service providers and Customers – for accessing and using the Distribution System, more specifically to: (i) define obligations, responsibilities, and accountabilities of all the parties for ensuring open, transparent, non-discriminatory, and economic access and use of the system while maintaining its safe, reliable and efficient operation; (ii) define minimum technical requirements for the participants; and (iii) Set out the information exchange obligations of the participants. Issue, 01; Revision, 00 (November 2008) The Saudi Arabia Distribution Code CONTENTS 1. INTRODUCTION 6 2. GENERAL CONDITIONS 13 3. PLANNING 21 4. CONNECTION CONDITIONS 35 5. OPERATION 61 6. DEFINITIONS 83 7. SECURITY AND PLANNING 93 STANDARDS FOR THE DISTRIBUTION SYSTEM (Demand Customers Only) Issue, 01; Revision, 00 (November 2008) The Saudi Arabia Distribution Code PART 1: INTRODUCTION Contents 1.1 Purpose of the Distribution Code 1.2 Structure of the Distribution Code 1.3 Structure of the Electricity Supply Industry 1.4 Users of the Distribution System 1.1 Purpose of the Distribution Code The Distribution Code specifies the technical aspects of the working relationship between the DSP(s) and all Users of the Distribution system which are necessary to ensure a stable, reliable and economical electrical Distribution system and to enable the DSP(s) to fulfil their obligations specified in the Saudi Arabian Grid Code (SAGC). The relationship between all Users, the Grid Code and the Distribution Code is shown diagrammatically in Figure 1.1. Issue, 01; Revision, 00 (November 2008) The Saudi Arabia Distribution Code THE DISTRIBUTION CODE GRID CODE AND DISTRIBUTION CODE BOUNDARIES Figure 1:1 Issue, 01: Revision, 00 (November 2008) The Saudi Arabian Distribution Code 1.2 Structure of Distribution Code The Distribution Code is in seven parts, as follows: Part 1: Introduction This outlines the purpose of the Code, its relationship with the Saudi Arabian Grid Code (SAGC), the structure of the electricity supply industry, and how the various parts of the Code are relevant to the different Users of the Distribution system. Part 2: General Conditions This presents provisions which are of general application to all parts of the Code. Part 3: Planning This specifies the technical and design criteria and the procedures to be employed in the planning and development of the Distribution system. Part 4: Connection Conditions These define the minimum standards for methods of connection to the Distribution System. Part 5: Operation This part addresses various operational issues including load forecasting, planning outages, reporting of operational changes and events, safety matters and procedures for dealing with emergencies. Part 6: Definitions Part 7: References This lists other documentation which is referred to in the Code. Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code 1.3 Structure of the Electricity Supply Industry The Electricity Supply Industry comprises the following entities: (a) The Transmission Service Provider (TSP) owns and operates the Transmission System. The Transmission System transports the electricity, generated by Generating Units, to the Distribution System, through which most Customers will be supplied. Some Generating Plant is connected directly to the Distribution System and is referred to as Embedded Generation. (b) The Distribution Service Provider (DSP(s)) is responsible for operating and maintaining secure, reliable and efficient electricity Distribution System. The Distribution System transports electricity from the Transmission System or from Embedded Generating Units to the final Customer. (c) Retailers supply electricity to Customers. For this purpose, Retailers will be entitled to use both the Transmission System and the Distribution System for the transport of electricity from Generating Units to Customers. (d) Traders supply electricity to other licensees and/or eligible Customers. For this purpose, Traders will be entitled to use both the Transmission System and the Distribution System for the transport of electricity from Generating Units to those licensees or eligible Customers (e) Generators generate electricity which is fed onto the Transmission or Distribution Systems. Generating Units are classified according to their voltage, output power and whether or not they are subject to Central Dispatch by the TSP. (f) Customers may purchase electricity from the DSP(s), Traders or Retailers. Some Customers have their own generating Plant for supplying all or part of their own needs. These are referred to as Customers with CHP or Customers with Auto-Production. (g) ECRA was established to regulate the new Electricity Industry. Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code 1.4 Use of the Distribution System Use of the Distribution System may involve any of the following transactions: (a) Any connection at entry to or exit from the Distribution System, which is called an interface point. An entry point is the connection between the Distribution System and the Transmission System or an Isolated/ Embedded Generating Plant. An exit point is the connection between the Distribution System and the Customer's premises. (b) Use of the Distribution System to transport electricity between entry and exit points. (c) Construction of a Connection Point. (d) Work and/or operation associated with equipment at the interface with the Distribution System. Users connected to the Distribution System shall comply with the relevant sections of the Distribution Code. The categories of Users of the Distribution System are described in Table 1 and the sections of the Code that apply to each User are shown in Table 2. Users shall also comply with the requirements of relevant legislation, which from time to time comes into force. There are a number of technical documents annexed to the Distribution Code. Users are bound to comply with the requirements of these documents as appropriate to their circumstances. User Users shall also be required to enter into technical and other agreements. Customers and Generator Embedded Generators shall be required to have Connection Agreements with the DSP(s) and Retailers/ Traders shall be required to enter into Use of System Agreements with the DSP(s) or the TSP as the case may be. Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code <table><tr><td colspan="2">CATEGORIES OF USERS OF THE DISTRIBUTION SYSTEM</td></tr><tr><td>A1</td><td>Embedded Generator> 10 MW</td></tr><tr><td>A2</td><td>Embedded Generator> 2 MW <10 MW</td></tr><tr><td>A3</td><td>Embedded Generator< 2 MW</td></tr><tr><td>A4</td><td>Customers with CHP or Customers with Auto-production</td></tr><tr><td>A5</td><td>Customers with stand-by Generators</td></tr><tr><td>B1</td><td>Major Customers connected at High Voltage</td></tr><tr><td>B2</td><td>Customers connected at Medium Voltage</td></tr><tr><td>B3</td><td>Industrial and commercial Customers connected at Low Voltage</td></tr><tr><td>B4</td><td>Domestic Customers</td></tr><tr><td>C</td><td>Retailers/ Traders</td></tr><tr><td>D</td><td>The Distribution Service Provider (DSP(s))</td></tr></table> Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code Table 2 Not Applicable D Applicable with specific obligations R Relevant for information but no specific obligations Note (1): Customers represented in Categories A4 and A5 must comply with the Code sections relevant to that category and additionally to the relevant sections of the category of Customer to which they belong. Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code PART 2: GENERAL CONDITIONS Contents DGC1 Introduction DGC2 Scope DGC3 Implementation DGC4 Unforeseen Circumstances DGC5 Hierarchy DGC6 Distribution Code Review Panel DGC7 Communications between DSP(s) and Users DGC8 Emergency Situations DGC9 Derogations DGC10 Confidentiality DGC11 Force Majeure DGC12 Disputes and Dispute Resolution Procedures DGC1: Introduction While each part of the Distribution Code presents the rules and provisions relating specifically to that part, the Distribution General Conditions (DGC) presents provisions which are of general application to all parts of the Distribution Code. DGC2: Scope The General Conditions apply to all Users of the Distribution System. DGC3: Implementation DGC3.1 The Distribution Service Provider Licence imposes a duty upon DSP(s) to implement and enforce the Distribution Code. In order to do this DSP(s) may need access across boundaries, services, and facilities from Users or to issue instructions to Users, for example to isolate or disconnect Plant or apparatus. It is considered that these cases will be exceptional and it is not, therefore, possible to envisage precisely or comprehensively what DSP(s) might reasonably require in order to carry out its duty. DGC3.2 All Users are required to abide by the Distribution Code and also to provide the DSP(s) rights of access, services and facilities and to comply with such instructions as may be reasonably required to implement and enforce the Distribution Code. Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code DGC4: Unforeseen Circumstances DGC4.1 If circumstances arise which the provisions of the Distribution Code have not foreseen, DSP(s) shall, to the extent reasonably practicable in the circumstances, consult promptly and in good faith with affected Users in an effort to reach agreement as to what should be done. If agreement cannot be reached in the time available DSP(s) shall determine what is to be done. DGC4.2 Whenever DSP(s) makes a determination, it shall have regard, wherever possible to the views expressed by Users, and in any event, to what is reasonable in all the circumstances. DGC4.3 Each User shall comply with all instructions given to it by DSP(s) following such a determination, provided that the instructions are consistent with the then current technical parameters of the particular User's System registered under the Distribution Code. The DSP(s) shall promptly refer all such unforeseen circumstances and any such determination to the Distribution Code Review Panel (DCRP) in accordance with DGC6.2. DGC5: Hierarchy DGC5.1 In the event of any conflict between the provisions of any direction of ECRA on the one hand and the provisions of the Distribution Code on the other, the provisions of ECRA's direction shall prevail. DGC5.2 In the event of any conflict between the provisions of the Distribution Code and any contract, agreement or arrangement between DSP(s) and a User, the provisions of the Distribution Code shall prevail unless the Distribution Code expressly provides otherwise. DGC5.3 In the event of any conflict between the provisions of the Distribution Code and the Transmission Code relating to system operation, the provisions of the Transmission Code shall prevail [unless the Distribution Code expressly provides otherwise.] DGC6: Distribution Code Review Panel DGC6.1 The DSP(s) shall establish and maintain the DCRP, which shall be a standing body, to carry out the functions referred to in DGC6.2. DGC6.2 The Panel shall Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code (a) keep the Distribution Code and its working under review, (b) review all suggestions for amendments to the Distribution Code which ECRA or any User may submit to a DSP for consideration by the Panel from time to time, (c) recommend to ECRA amendments to the Distribution Code that the Panel feels are necessary or desirable and the reasons for the recommendation, (d) issue guidance in relation to the Distribution Code and its implementation, performance and interpretation when asked to do so by any User, (e) consider what changes are necessary to the Distribution Code arising out of any unforeseen circumstances referred to it by DSP(s) under DGC4, (f) consider the affect of proposed changes on the Transmission Code, (g) publish recommendations as to amendments to the Distribution Code that a DSP or the DCRP feels are necessary or desirable and the reasons for the recommendations, and (h) Produce an annual report of the activities of the DCRP. DGC6.3 The Panel shall consist of (a) chairperson and two persons appointed by, and representing DSP(s), (b) one person appointed by and representing ECRA, (c) one person representing the TSP, (d) one person representing Generators with Embedded generation, (e) one person representing Major Customers, (f) one person representing suppliers, and (g) one representative of the SASO Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code If any of the above parties fails to appoint its representative (ECRA) shall appoint one on its behalf. Each of the above shall be appointed pursuant to the rules issued pursuant to DGC6.4. DGC6.4 The Panel shall establish and comply at all times with its own rules and procedures relating to the conduct of its business, such rules and procedures to be known as the Constitution and Rules of the Panel, which shall be approved by ECRA. The DSP shall consult all Users liable to be affected in relation to all proposed amendments to the Distribution Code and shall submit all proposed amendments to the Distribution Code to the DCRP for discussion prior to such consultation. Unless an amendment is urgently required, ECRA will not amend the Distribution Code until all affected Users have been given a reasonable opportunity to make representations to ECRA concerning the amendment, and those representations have been taken into account. ECRA will notify all DSP's and all affected Users of any amendment that ECRA makes to the Distribution Code. DGC6.6 DCRP shall, from time to time or at the behest of ECRA having regard to the recommendations of the Panel, submit a revised Distribution Code to ECRA for approval. DGC7: Communications between DSP(s) and Users DGC7.1 Unless otherwise specified in the Distribution Code the methods of operational communication and data transfer shall be agreed between DSP(s) and Users from time to time. DGC8: Emergency Situations DGC8.1 Users should note that the provisions of the Distribution Code may be suspended, in whole or in part, pursuant to any directions given and/or orders made by ECRA in emergency situations, pursuant to provisions of the Electricity Law issued by Royal Decree No. M/56. Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code DGC9: Derogations DGC9.1 If a User finds that they are, or will be, unable to comply with any provision of the Distribution Code, then they shall without delay report such non-compliance to DCRP and shall, subject to the provisions of DGC9.2 make such reasonable efforts as are required to remedy such non-compliance as soon as reasonably practicable. DGC9.2 Where the non-compliance is (a) with reference to Plant and/or apparatus connected to the Distribution System and is caused solely or mainly as a result of a revision to the Distribution Code, or (b) with reference to Plant and/or apparatus which is connected, approved to connect, or for which approval to connect to the Distribution System is being sought, and the User believes either that it would be unreasonable (including cost and technical considerations) to require it to remedy such non-compliance or that it should be granted an extended period to remedy such non-compliance it shall promptly submit to DCRP a request for a derogation from such provision in accordance with the requirements of DGC9.3 and shall provide DSP(s) with a copy of such application. DGC9.3 A request for derogation from any provision of the Distribution Code shall contain the following: (a) the issue number and the date of the Distribution Code provision against which the non-compliance or predicted non-compliance was identified; (b) identification of the Plant and/or apparatus in respect of which a derogation is sought, and if relevant, the nature and extent to which the non-compliance exists; (c) identification of the provision with which the User is, or will be, unable to comply; Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code (d) the reason for the non-compliance; and (e) the date by which compliance will be achieved (if remedy of the non-compliance is possible) subject to DGC9.2 (b) A standard Distribution Code Derogation Application form is included in Annex 2. DGC9.4 If DSP(s) finds that they are, or will be, unable to comply with any provision of the Distribution Code, then they shall, subject to the remaining provisions of DGC9 make such reasonable efforts as are required to remedy such non-compliance as soon as reasonably practicable. DGC9.5 In the case where DSP(s) requests derogation, DSP(s) shall submit the information set out in DGC9.3 to DCRP. DGC9.6 On receipt of any request for derogation, DCRP shall promptly consider such request and discuss the potential outcomes of such request with ECRA. Following such discussion, DCRP shall recommend to ECRA such derogation, provided that DCRP considers that the grounds for the derogation are reasonable. DCRP will not recommend to ECRA such derogation if (a) It would, or it is likely that it would, have a material adverse impact on the security and stability of the Distribution System, or (b) It would result in ECRA imposing unreasonable costs on the operation of the Distribution System or Transmission System or on other Users. In its consideration of a derogation request by a User, DCRP may contact the relevant User and/or DSP(s) to obtain clarification of the request or to discuss changes to the request. Derogation from any provision of the Distribution Code shall contain the following: (a) the issue number and the date of the Distribution Code provision against which the derogation applies; (b) identification of the provision with which the derogation applies; Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code (c) identification of the Plant and/or apparatus in respect of which a derogation applies, and, if relevant, the nature and extent to which the derogation applies including alternate compliance provision; (d) the reason for the non-compliance requiring derogation; and (e) the date by which the derogation ends if compliance will be achieved, or by which such derogation expires. DGC9.7 To the extent of any derogation granted in accordance with this DGC9, DSP(s) and/or the User (as the case my be) shall be relieved from its obligation to comply with the applicable provision of the Distribution Code and shall not be liable for failure to so comply but shall comply with any alternate provision as set forth in the derogation. Should a derogation not be granted, then the User will be required to comply with the applicable provision of the Distribution Code and will be liable for failure to so comply. DGC9.8 DCRP shall (a) keep a register of all derogations which have been granted, identifying the name of the person in respect of whom the derogation has been granted, the relevant provision of the Distribution Code and the period of the derogation, and (b) on request from any User, provide a copy of such register of derogations to such User. DGC9.9 Where a material change in circumstance has occurred, a review of any existing derogations, and any derogations under consideration, may be initiated by DCRP at the request of ECRA, DSP(s), or Users. DGC10: Confidentiality DGC10.1 The Distribution Code contains procedures under which the DSP(s) will receive information from Users relating to the intentions of such Users. The DSP shall not, except in pursuance of specific requirements of the Distribution Code, disclose such information to any User or other person without the prior written consent of the provider of the information, subject to the requirements of the Distribution Licence. Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code DGC11: Force Majeure DGC11.1 If a DSP or User would breach the terms of the Distribution Code due to an event outside the reasonable control of the DSP or User (a “Force Majeure Event”), then those obligations under the Distribution Code that are affected by the Force Majeure Event are suspended as long as the Force Majeure Event continues. DGC11.2 The DSP or the User must give the other party prompt notice of the Force Majeure Event including full details, an estimate of likely duration, the obligations affected by it and the steps taken to remove overcome or mitigate its effects. [DGC12: Disputes and Dispute Resolution Procedure DGC12.1 any dispute that arises from time to time regarding how the Distribution Code is being administered and interpreted shall be resolved following the Dispute Resolution Procedure as set out in DGC12.2. DGC12.2 The Distribution Code Dispute Resolution Process shall be in accordance with complaints handling procedure submitted by DSP under Implementing Regulations (Article 29)] Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code PART 3: PLANNING Contents DPC 1 Introduction DPC2 Design Standards DPC3 Transfer of Planning Data DPC1: Introduction DPC1.1 Part 3: Planning specifies the technical and design criteria and the procedures to be complied with by DSP(s) in the planning and development of the Distribution System. It also applies to Users in the planning and development of their installations in so far as they affect the Distribution System. DPC1.2 The Users' requirements may necessitate the reinforcement of, or an extension to, the Distribution System and for reinforcement of, or extension to, the relevant Transmission/Distribution interface capacity, such work being identified by DSP(s) or TSP as appropriate. DPC1.3 The time required for the planning and development of the Distribution System and any consequential requirement of the interface with the Transmission System, will depend on the type and extent of the necessary reinforcement and/or extension work, the time required for obtaining planning permission and right of way, including any associated hearings, and the degree of complexity in undertaking the new work while maintaining satisfactory security and quality of supply. DPC1.4 Reference is made in Part 3 to DSP(s) supplying information or advice to Users. For avoidance of doubt, unless the context otherwise requires, such information or advice shall be provided by DSP(s) as soon as practical following a request by the User (whether during the application for connection process or otherwise). Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code DPC2: Design Standards DPC2.1 Frequency The Frequency of supply is outside the control of DSP(s); however the standard Frequency range is as follows: The Transmission System Frequency is nominally 60Hz and shall normally be controlled within the limits of 59.9Hz to 60.1Hz. The system Frequency could rise to 62.5 Hz or fall to 57.0 Hz in exceptional circumstances. Design of Generators' Plant and apparatus must enable operation of that Plant and apparatus within that range in accordance with the following: <table><tr><td>Below nominal Frequency(Hz)</td><td>Above nominal Frequency(Hz)</td><td>Operation requirement</td></tr><tr><td>58.8 -60.0</td><td>60.0 -60.5</td><td>continuous</td></tr><tr><td>57.5 -58.7</td><td>60.6-61.5</td><td>For period of 30 minutes</td></tr><tr><td>57.0- 57.4</td><td>61.6-62.5</td><td>For period of 30 seconds</td></tr></table> Users should ensure their equipment is designed or protected for these exceptional circumstances. DPC2.2 Voltages The voltages listed in Table DPC2.1 shall be used as standard service voltages at the interfaces with power Customers. The service voltage shall be maintained within the range defined by the indicated lowest and highest values, under steady state and normal system conditions and over the full loading range of the system. Where two voltages are listed e.g. 220/127V the lower value refers to the phase to neutral voltages. All other values are phase-to-phase voltages. Existing, but non-standard, voltages are listed in Table DPC2.2. Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code <table><tr><td>Nominal Voltage</td><td>Lowest Voltage</td><td>Highest Voltage</td></tr><tr><td>220/127V</td><td>209/120V</td><td>231/134V</td></tr><tr><td>380/220V</td><td>360/209V</td><td>400/231V</td></tr><tr><td>13.8kV</td><td>13.1kV</td><td>14.5kV</td></tr><tr><td>33kV</td><td>31.4kV</td><td>34.7kV</td></tr><tr><td>69kv</td><td>65.5kv</td><td>72.5kv</td></tr></table> Table DPC2.1: Standard Service Voltages <table><tr><td>Nominal Voltage</td><td>Lowest Voltage</td><td>Highest Voltage</td></tr><tr><td>11kV</td><td>10.45kV</td><td>11.55kV</td></tr><tr><td>34.5kV</td><td>32.78kV</td><td>36.23kV</td></tr></table> Table DPC2.2: Existing, But Non-Standard, Voltages Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code DPC2.3 Harmonics The level of Harmonics in the power system shall comply with the limits set out in Table DPC2.3, on a continuous basis. <table><tr><td rowspan="2">Nominal Voltage</td><td rowspan="2">Total Harmonic Voltage Distortion %</td><td colspan="2">Individual Harmonic Voltage Distortion (%)</td></tr><tr><td>Odd</td><td>Even</td></tr><tr><td rowspan="2">127-380V</td><td rowspan="2">5.0</td><td>4.0 for N <14</td><td rowspan="2">2.0</td></tr><tr><td>1.5 for N >14</td></tr><tr><td>13.8kV</td><td>4.0</td><td>3.0</td><td>1.75</td></tr><tr><td>33kV</td><td>3.0</td><td>2.0</td><td>1.0</td></tr></table> Table DPC2.3: Maximum Continuous Harmonic Levels Note: N is the harmonic order, or multiple of the fundamental Frequency. Voltage distortion is expressed as a percentage of the fundamental voltage. The indicated values refer to maximum continuous levels. DPC2.4 Power Factor Each Customer shall maintain a Power Factor of not less than 0.85 lagging at the interface with DSP(s). No Customer shall present a leading Power Factor to the DSP(s) system. DPC2.5 Phase Unbalance Under normal system conditions the three phase voltages shall be balanced at MV, and higher voltages in the system, such that the negative phase sequence voltage does not exceed 2% of the positive phase sequence voltage. Customers with a dedicated transformer or those supplied at 13.8kV or a higher voltage shall balance their loads, such that the load phase unbalance at the Customer interface meets the above criterion. All other Customers shall balance their loads over the three phases to the greatest degree possible. The DSP(s) shall then balance these loads, within the power system, to meet the above criterion. Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code DPC2.6 Voltage Stability Voltage Dips For non-repetitive voltage variation, or voltage dips, such as those associated with motor-starting, welding equipment or power system switching, the voltage variation shall not exceed 7% of the fundamental nominal voltage under normal circumstances. Such variations shall not occur more frequently than 3 times per day. Application No Customer shall connect equipment to the power system, which causes voltage fluctuation at the Customer interface in excess of these requirements. The DSP(s) shall ensure that the power supply, at each Customer's interface, conforms to these requirements. DPC2.7 Earthing Requirements 1. Separation of LV Neutral and MV Grounds. LV neutral ground and any grounds associated with MV equipment / system (e.g. MV metal work, cable screen, etc.) shall always be kept separate. Primary neutral (if available) shall not be bonded to secondary neutral. 1. Separation between LV neutral ground and MV equipment / system ground shall be achieved by grounding LV neutral points which are remote from MV grounds. Minimum distance between any part of MV ground system and nearest LV neutral ground shall be 4 meters. 2. Recommended ground resistance limits for different installations should be as under: <table><tr><td>System GROUND</td><td>5 ohms</td></tr><tr><td>ALL distribution substation</td><td>5 ohms</td></tr><tr><td>Surge arresters</td><td>5 ohms</td></tr><tr><td>LV distribution panel</td><td>10 ohms</td></tr></table> 3. LV metering Installations It shall be essential for the Customer to provide grounding at his interface. The Customer shall bring the ground wire to the grounding terminals provided in the meter box. The ground wire of the Customer shall be connected to the ground terminal inside the meter box. The ground terminal shall be short linked with the neutral. Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code For more than one KWH -meters at one location, four KWH-meters shall be connected to one ground rod. In case of additional KWH-meters at the premises, additional ground rods shall be provided. 4. Ground mounted MV equipment The equipment covered are RMU, MV switches etc, when separated from Transformer and Bulk Customer Indoor Switchgear. All metal work shall be bonded together and to the substation metalwork grounding system. Each continuous piece of metal that could form part of the path of a ground fault current shall be bonded to its neighbors so that continuity of grounding circuit does not depend on mechanical connections between components. Licensed Distributors shall advise on the method of Earthing of the Distribution System, for example, whether it is connected solidly to Earth or through impedance. The specification of associated apparatus and Plant of the Distribution System User shall meet the voltages that will be imposed on the apparatus and Plant as a result of the method of Earthing. Notwithstanding the above, the DSP(s) shall provide a complete separate Earthing code to define the Earthing requirements for safe use of the system. This code shall constitute an integral part of the Distribution code. Distribution System Users shall take precautions to limit the occurrence and effects of circulating currents in respect of the neutral points connected with Earth where there is more than one source of electricity. DPC2.8 Security of Supply DPC2.8.1 The Security Standard for the Distribution System is as follows: Security of supply (also known as continuity) is evaluated in terms of four indices, as follows: (1) System Average Interruption Frequency Index (SAIFI) SAIFI = Total Customer Interruptions Total Connected Customers - Measured in interruptions per 100 connected Customer years Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code (2) System Average Interruption Duration Index (SAIDI) SAIDI = Total Customer Hours of Interruptions Total Connected Customers - Measured in Customer hours of interruptions per connected Customer year (3) Customer Average Interruption Duration Index (CAIDI) CAIDI = SAIDI SAIFI - Measured in hours of interruption (4) Index of Reliability (IR)"Average system availability Index" (ASAI) IR (ASAI)= 8760 Hours/Year - SAIDI x 100 8760 Hours/Year (Expressed as a percentage) The DSP(s) will have to comply with the security of supply standards limits as published by ECRA from time to time. DPC2.8.2 DSP(s) shall use reasonable endeavours to maintain a supply from the system. This cannot be ensured, since faults, planned maintenance and new works outages and other circumstances outside DSP(s) control can cause interruptions. On such occasions, DSP(s) shall use reasonable endeavours to restore the supply or connection as soon as practicable but shall be under no liability for any direct or indirect damage or associated loss incurred by the User. DPC2.8.3 Restoration times for different outage types are as follows: Fault Outages: DSP(s) shall endeavour to restore access to the system as soon as practically possible taking into consideration the KPI set values approved by ECRA Planned Outages: DSP(s) shall give five days' notice to relevant Users of planned supply interruptions. In some situations – to facilitate emergency Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code repairs or local outages affecting a small number of Customers – shorter notice may be given. Supply Curtailments: In some circumstances, it may be necessary to request Customers to reduce load or to use standby supplies where appropriate. In these situations DSP(s) shall endeavour to maintain access to the System. In extreme cases where this may not be possible DSP(s) shall endeavour to provide two days' notice to the Users. Load Shedding: In extreme situations there may be generation shortages and load shedding may be required. In these circumstances DSP(s) shall notify Customers if possible but as this is an emergency situation it may not be possible to do so. DSP(s) shall prepare a Load Shedding Criterion and submit it to ECRA for approval. This criterion shall detail the methodology for selection of load(s) to be shed. DPC2.8.4 DSP(s) may disconnect Users under certain circumstances. These circumstances shall include: (a) Where the Customer's installation or use of electricity is such as to interfere with the satisfactory operation of the Distribution or Transmission system or to cause disturbance to other Customers. (b) Where DSP(s) considers that the Customer's installation is in a dangerous condition. (c) Where alterations, repairs, renewal or maintenance of the Distribution System or DSP(s) assets or means of connection require the de-energisation of the Connection Point. (d) Where a Customer extends supply for use by another party whom DSP(s) considers to be a separate Customer. (e) In any other circumstances in which discretion is necessary or appropriate to enable DSP(s) to comply with the Distribution Code and/or to operate the Distribution System in accordance with Good Industry Practice or is required by any law, direction, rule or regulation having the force of law. Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code DPC3: Transfer of Planning Data DPC3.1 Planning information to be provided by Users. DPC3.1.1 Users of the Distribution System shall provide sufficient planning data/ information as can reasonably be expected to be made available, when requested by DSP(s) from time to time to enable DSP(s) to comply with the requirements under its Distribution Licence. DPC3.1.2 Users of the Distribution System shall provide planning data for specific future time periods updated annually as necessary and including projected Demand requirements, anticipated changes in maximum Demand, or generating capacity, as appropriate. The data and timescales over which the data is required are given in Distribution Operating Code 1 (DOC1). DPC 3.1.3 In addition to periodic updates of planning information, a User shall give adequate notice of any significant change to their system or operating regime to enable DSP(s) to prepare its development plans and implement any necessary system modifications. In the event of unplanned changes in a User's System or operating regime a User shall notify DSP(s) as soon as is practically possible to ensure any necessary measures can be implemented. DPC3.1.4 Users shall also provide details of reactive compensation Plant directly or indirectly connected to the Distribution System other than at Low Voltage, including its rating and operational control. DPC3.1.5 Users may be required to provide DSP(s) with detailed data relating to the interface between their System and that of the Distribution System covering circuit parameters, switchgear and Protection arrangements of equipment directly connected to or affecting the Distribution System to enable DSP(s) to assess any implications associated with these points of connection. DPC3.2 Information to be exchanged. DPC3.2.1 On the request of a User, DSP(s) shall provide such information as may be reasonably required on the design and other characteristics of the Distribution System. Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code DPC3.2.2 Where DSP(s) proposes to make certain modifications to its system or where it has received information from a User under DPC4.1 above, which may impact on other User installations then DSP(s) will notify Users of the proposal, subject to any constraint of confidentiality or timing. DPC3.2.3 DSP(s) shall provide information on request to Users regarding the local network conditions to enable them to determine their Protection requirements. DPC3.2.4 Where the User's installation is connected to the bus bars of the Distribution System, sufficient details may need to be exchanged with respect to User/ DSP(s) Ownership Boundary to enable an assessment to be made of transient over voltage effects. The request for information may be initiated by either DSP(s) or the User. DPC3.2.5 Information may be exchanged between DSP(s) and the User on fault in feed levels at the feeding bus bar or point of connection to the Distribution System as appropriate, in the form of - Three phase and single phase to earth short circuit in feed. - The X/R ratio under three phase fault conditions. DPC3.2.6 Information shall be exchanged between DSP(s) and User on Demand Transfer Capability where the same Demand can be supplied from alternate User points of supply. This shall include the proportion of Demand normally fed from each point of supply and the arrangements (manual or automatic) for transfer under planned/fault outage conditions. DPC3.3 Planning Studies DPC3.3.1 In order to facilitate connections to the Distribution System DSP(s) shall prepare on request a study showing the implications of a connection at a particular point on the system. DPC3.3.2 Under the terms of the Distribution Licence a reasonable charge (as submitted by DSP(s) and approved by ECRA) may be levied by DSP(s) for the planning study. Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code DPC3.3.3 A User or potential Users shall provide DSP(s) with information regarding the proposed facility including load details, interface arrangements, proposed Connection Point and import/export requirements. DPC3.3.4 The studies shall normally be prepared within 28 days after the date of receipt of the information or the agreement of the person making the request to pay the cost of the study, whichever is the longer. In the case of Generators and Major Customers seeking connection, depending on the nature and complexity of the request, this period may extend up to 100 days or a further 28 days from the receipt of planning information from the TSP whichever is the greater. DPC3.3.5 Details of the procedures for application for connection to the Distribution System are contained in [CUSTOMER SERVICE MANUAL] as prepared by DSP(s) and approved by ECRA. DPC3.3.6 Where such information is available DSP(s) shall provide on request a statement of present and future circuit capacities, forecast power flows and loadings on part or parts of the Distribution System specified in the request and shall include Fault Levels at each Distribution node covered by the request. DSP(s) may levy a charge for the provision of this statement as approved by ECRA on account of the reasonable costs incurred by DSP(s) in preparing this statement. The statement shall be prepared within 28 days after the date of receipt of the information or the agreement of the person making the request to pay the cost of the statement, whichever is the longer. In the case of Generators and Major Customers seeking connection this period may extend up to 100 days depending on the nature and complexity of the request. DPC3.3.7 The dates given in this DPC3.3 are target dates only and do not constitute a legal commitment. DSP(s) shall however use reasonable endeavours to abide by them. Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code PART 4: CONNECTION CONDITIONS Contents DCC 1 Introduction DCC2 Information Required for Connection DCC3 Connection Arrangements DCC4 Technical Requirements for Connections DCC5 Metering and Telemetry DCC6 Generator Requirements DCC1: Introduction DCC1.1 It is necessary to require certain minimum technical, design and operational criteria to be met by Users' Plant and apparatus in order to maintain, insofar as is permitted by Good Industry Practice, stable and secure operation of the Distribution System for the benefit of all Users and for the Protection of the Distribution System and Users' Plant and apparatus directly connected to the Distribution System. DCC1.2 The Connection Conditions define the minimum standards for the method of connection to the Distribution System and the technical, design and operational standards to which Users connecting to the Distribution System shall comply. DCC1.3 The Connection Conditions specify the technical arrangements required at the Ownership Boundary between the Distribution System and the installation of the User and are applicable to all voltage levels covered by the Distribution Code. DCC1.4 The Connection Conditions specify the information to be provided by Users to ensure that adequate provision can be made by DSP(s) for new connections or increases in existing load. It also applies to Generators who operate in parallel with the Distribution System, where a connection is required. Prospective Users shall provide to DSP(s) in good time all the details set out in this section. DCC1.5 In conjunction with the Connection Conditions, there are Connection Agreements, which are bilateral agreements between DSP(s) and each User, and which contain the detail specific to each User's connection to and use of the Distribution System. The Connection Agreement requires the User and DSP(s) to comply with the terms of the Distribution Code. Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code DCC2: Information Required for Connection DCC2.1 For connections at Low Voltage it is possible in most cases to assess whether a proposed connection is acceptable, and to determine the necessary supply arrangements, from analysis of the following data: (a) Maximum kVA requirements. (b) Type and electrical loading of equipment to be connected, such as number and size of motors, cookers, showers, air conditioning, space and water electrical heating loads and nature of Disturbing Loads e.g. welding equipment. (c) The date when connection is required. (d) Plan covered area and location If a preliminary examination of this data indicates that more detailed information is reasonably required then it shall be provided to DSP(s) upon request. DCC2.2 Information Requirements and timeframes for quotation and connection are provided in [Customer service manual] as prepared by DSP(s) and approved by ECRA. Copies of this manual are available on request from DSP(s). DCC2.3 For connections at distribution level the provisions of DCC2.1 also apply. Additionally, the following information may be required: (a) All Types of Demand (i) Maximum Active Power requirements. (ii) Maximum and Minimum Reactive Power requirements. (iii) Type of load and control arrangements (e.g. type of motor start, controlled rectifier or large motor drives). (iv) Maximum load on each phase. (v) Maximum harmonic currents that may be imposed on the Distribution System. (vi) Details of cyclic load variations or fluctuating loads (as below). Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code (b) Disturbing Loads Comprehensive schedule of installed new equipment including details of Disturbing Loads. These are loads which have the potential to introduce Harmonics, Flicker or unbalance to the system. This could adversely affect the supply quality to other Customers. Disturbing loads could be non-linear loads, power converters/regulators and loads with a widely fluctuating Demand. The type of load information required for motive power loads, welding equipment, harmonic producing/non linear loads and generating equipment can be obtained from DSP(s) on request. In the case of compensating equipment associated with Disturbing Loads, details and mode of operation to be provided so as to ensure compliance with emission limits specified in DCC4.8.3. (c) Fluctuating Loads Duty cycle, including details of cyclic or other variation of Active Power and Reactive Power, in particular: (i) the rates of change of Active Power and Reactive Power, both increasing and decreasing; (ii) the shortest repetitive time interval between fluctuations in Active Power and Reactive Power; and (iii) the magnitude of the largest step changes in Active Power and Reactive Power, both increasing and decreasing. DCC2.4 In some cases, more detailed information may be required to permit a full assessment of the effect of the User's load on the Distribution System. Such information may include an indication of the pattern of build up of load and a proposed Commissioning programme. This information shall be specifically requested by DSP(s) when necessary and shall be provided by the User within a reasonable time. Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code DCC2.5 Users shall contact DSP(s) in advance if it is proposed to make any significant change to the connection, electric lines or electric equipment, install or operate any generating equipment or do anything else that could affect the Distribution System or require alterations to connection. DCC2.6 Users shall provide to DSP(s) any information reasonably required by DSP(s) about the nature, or use by the User, of electrical equipment on the User's premises. DCC3: Connection Arrangements DCC3.1 Connection Voltage DCC3.1.1 During the application for connection process DSP(s) shall, in consultation with the User, specify the voltage level to which a User will be connected in accordance with normal practice for the type of load to be supplied and network characteristics. DCC3.1.2 Generally, the voltage level will be the minimum nominal voltage in standard use on the System, assessed against (a) satisfactory operation of the installation, (b) isolation of disturbance from other Customers, (c) lifecycle costs, and (d) cost of connection DCC3.1.3 DSP(s) may, on occasion, specify higher connection voltage in order to avoid potential disturbances caused by the User's apparatus to other Users of the Distribution System or for other technical reasons or may agree alternative methods for minimising the effects of Disturbing Loads. DCC3.2 Information Provided by DSP(s) Based on the information provided by the User for a connection to the Distribution System, DSP(s) shall prepare a statement containing as many of the following elements as are necessary for, or relevant to, the proposed installation: Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code (a) nominal voltage at which connection will be made; (b) method of connection, extension and/or reinforcement details; (c) the normal impedance to source at the point of connection; (d) method of Earthing; (e) maximum IMPORTED CAPACITY; (f) individual Customer limits relating to (i) Harmonic Distortion (ii) Flicker (iii) Phase Unbalance (g) expected lead time of providing connection (following formal acceptance of terms for supply); and (h) Cost of connection. DCC3.3 Ownership Boundaries DCC3.3.1 The point or points at which supply is given or taken between the Distribution System and User's installation shall be agreed between DSP(s) and the User as stipulated in the Connection Agreement between DSP(s) and the User. DCC3.3.2 For LV supplies DSP(s) responsibility extends up to the Customer's Connection Point, which is normally at DSP(s) main Circuit Breaker as further specified in the Connection Agreement between DSP(s) and the User. DCC3.3.3 For Medium Voltage supplies the ownership boundaries shall be subject to specific agreement between the parties in each case. Changes in the Boundary arrangements proposed by either party shall be agreed in advance. DCC3.3.4 All equipment at the Ownership Boundary shall meet the design principles contained in DPC2 and DCC3. Connections for entry to and exit from the Distribution System shall incorporate a means of disconnection of the User's installation by DSP(s). Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code DCC4: Technical Requirements for Connections DCC4.1 Connection Standards DCC4.1.1 A connection to the Distribution System may be by means of an overhead line, an underground cable or a combination of both as detailed in the Connection Agreement between DSP(s) and the User. The network configuration at the Connection Point may take a number of forms suitable to the nature of the load and network arrangements. DCC4.1.2 All equipment in an installation connected to the Distribution System shall be designed, manufactured, tested and installed in accordance with all applicable statutory obligations and shall conform to the relevant IEC distribution standards current at the time of the connection of the installation to the Distribution System. DCC4.1.3 If there is no relevant international standard available, and/ or if DSP(s) considers it necessary, DSP(s) may notify Users that supplemental specifications and/or standards shall be complied with, in which case User Plant and apparatus shall so comply. DCC4.1.4 All equipment in an installation connected to the Distribution System shall be suitable for use at the operating Frequency of the Distribution System and at the voltage and short-circuit rating of the Distribution System as shown in Tables DPC2.1 and DCC4.1 at the Connection Point. DSP(s) may require certification that the equipment has been designed and installed in a satisfactory manner. DSP(s) may also seek evidence that the equipment has been tested for conformity with the standards. DCC4.1.5 For Users connected at Low Voltage, installations shall comply with the standards as in DCC4.1.2 and DCC4.1.3. Users complying with these rules and regulations shall be deemed to comply with the requirements of the Distribution Code as regards design and safety. DSP(s) may seek evidence that the equipment has been tested for compliance with standards. DCC4.1.6 Before connecting any User to the Distribution System it will be necessary for DSP(s) to be reasonably satisfied that the User's System complies with the appropriate requirements of the Distribution Code. Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code DCC4.2 Protection Requirements DCC4.2.1 Users shall ensure that faults in the User's Plant and apparatus do not unreasonably cause disturbances to the Distribution System or to other Users. Without limiting this obligation, a User shall, prior to connection of the User's installation to the Distribution System, install the Protection equipment specified in DCC4.2.4. DCC4.2.2 Unless provided against, faults on the Distribution System can cause damage to User's Plant and apparatus through, for example, loss of a phase, over voltage, or under voltage. The User shall take account of the established practices of the particular network to which a connection is to be made, and ensure that Protection installed is compatible with that used by DSP(s). The adequacy of the Protection installed by the User is the User's responsibility. DCC4.2.3 The User's Protection arrangements at the Ownership Boundary, including types of Equipment and Protection settings, shall be compatible with existing system conditions and the Distribution System Protection practice as specified by DSP(s) at the time of application. In particular (a) the maximum clearance times (from fault current inception to arc extinction) shall be within the limits established by DSP(s) in accordance with Protection and equipment short circuit rating policy adopted for the Distribution System; (b) in connecting to the Distribution System the User should be aware that fast and slow-speed automatic re-closing is a feature of Power System operation. This is characterised by sudden de/re-energisation of the power supply. Dead times are typically 0.3s, 1s and 10s at Medium Voltage and 3s and 60s on 38kV systems; and (c) Users should also be aware that disconnection of one or two phases only of a three phase system may be effected by Distribution Protection arrangements for certain types of faults. Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code DCC4.2.4 The minimum Protection required for a User installation connected to the Distribution System will vary according to type, size, and method of connection (loop/tail/tee) and Earthing of the User System. It is anticipated that a new connection may require all or some of the following Protection facilities: (a) three phase over current; (b) earth fault Protection (suited to the local supply system); (c) distance; (d) inter-tripping; and (e) Others. DCC4.2.5 Where interface Circuit Breakers are used they shall be fitted with relays of a type acceptable to DSP(s). These relays shall have three phases over current elements and one earth fault element and shall have time-current characteristics complying with standard types A, S and C of IEC 244. Maximum permissible relay settings at the ownership boundary, necessary to provide selectivity any time in the future will be provided by DSP(s). Distribution Protection aims to minimise the impact of faults including voltage dip duration and must not be adversely affected by Customer's Protection limitations. (a) In order to ensure satisfactory operation of the Distribution System, Protection systems, operating times, discrimination, and sensitivity at the ownership boundary shall be agreed between DSP(s) and the User during the application for connection process, and may be reviewed from time to time by DSP(s). (b) In order to provide against the failure of a Circuit Breaker, or equipment having a similar function, to operate correctly by interrupting fault current on the system, back-up Protection shall normally be provided by operation of other Circuit Breakers or equipment having a similar function. Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code (c) Unless DSP(s) advises otherwise, the use of Protection and associated equipment to limit the fault current infeed from the User's system to the Distribution System is not acceptable if the failure of that Protection and associated equipment to operate as intended in the event of a fault could cause equipment owned by DSP(s) to operate outside its short-circuit rating. DCC4.2.6 Protection relays shall be commissioned on site by the User who shall ensure that the settings are below the maximum permitted levels. In certain cases DSP(s) may wish to witness these tests and it shall be the responsibility of the User to ensure that sufficient notice is given to DSP(s) in such cases. Users shall ensure that the Protection settings remain below the maximum permitted levels. This may require regular testing of the relays. DCC4.3 Earthing DCC4.3.1 Earthing of the part of the User's installation that is connected to the Distribution System shall comply with the requirements of DPC2.7. DCC4.3.2 The arrangements for connecting the User's installation with earth shall be designed to comply with relevant international and national standards. DCC4.3.3 The method of Earthing the Distribution System whether, for example, it is connected to earth solidly or through impedance, shall be advised by DSP(s). The specification of associated equipment shall be appropriate to the voltages that will be imposed on the equipment as a result of the method of Earthing. DCC4.3.4 Where there is more than one source of energy, Users shall take precautions to limit the occurrence and effects of circulating currents in respect of neutral points connected with earth. DCC4.4 Voltage Regulation and Control DCC4.4.1 Extensions or connections to the Distribution System shall be designed so that they do not hinder the necessary control of voltage on the Distribution System. Information on the voltage regulation and control arrangements shall be made available by DSP(s) if requested by the User. DCC4.5 Short-Circuit Levels Issue, 01; Revision, 00 (November 2008) The Saudi Arabian Distribution Code DCC4.5.1 The short circuit rating of User's equipment at the Connection Point shall not be less than the design Fault Level of the Distribution System as shown in DCC4.1 below. DSP(s) shall take into account the contribution to Fault Level of the User's connected system and apparatus in the design of its system. <table><tr><td>Connection Voltage</td><td>Size of …(70,797 more chars)