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meralco standard

booklet about meralco standard aand requirment

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meralco standard

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  1. Module 1 Service Standards for Service Availability Module 1 / Rev 00 / September 12, 2012

  2. Presentation Outline I. Purpose II. Definitions III. Guidelines A. Service Availability – General B. Secondary Voltage Service C. Primary Voltage Service D. Guaranteed Monthly Minimum Billing Demand Module 1 / Rev 00 / September 12, 2012

  3. I. Purpose To define the fundamental types of electric services being offered by MERALCO for uniformity during the processing of service applications. Module 1 / Rev 00 / September 12, 2012

  4. II. Definitions Applicant the prospective customer himself, the owner of the building, or any authorized representative of the prospective customer, who applies for electric service Customer a Person or juridical entity who enters into a contract with MERALCO for the purpose of purchasing or receiving Distribution Services Module 1 / Rev 00 / September 12, 2012

  5. II. Definitions Guaranteed Minimum Billing Demand (GMBD) the minimum demand to be billed at a given period Load, Applied the total connected load in kVA or kW applied for by the applicant, as shown in the electrical plans Module 1 / Rev 00 / September 12, 2012

  6. III. Guidelines Service Availability - General Franchise Area • All cities and municipalities of Metro Manila • The entire provinces of Bulacan, Rizal and Cavite • Parts of the provinces of Laguna, Quezon and Batangas • Several barangays in Pampanga Electric Distribution System • Nominal frequency of sixty (60) hertz • Overhead Distribution System Module 1 / Rev 00 / September 12, 2012

  7. III. Guidelines Service Availability – General (Service Voltages) Secondary Nominal Voltages 230 Volts 400 Volts 460 Volts Module 1 / Rev 00 / September 12, 2012

  8. III. Guidelines Service Availability – General (Service Voltages) Primary Nominal Voltages 13.2 kV 13.8 kV 34.5 kV 69 kV 115 kV Module 1 / Rev 00 / September 12, 2012

  9. III. Guidelines Service Availability – General (Allowable Voltage Variations) “The Distributor shall ensure that no Undervoltge or Overvoltage is present at the Connection Point of any User during normal operating conditions.” Undervoltage RMS Value < 90% of the nominal value Overvoltage RMS Value > 110% of the nominal value Module 1 / Rev 00 / September 12, 2012

  10. III. Guidelines Service Availability – General (Meralco’s Objective) MERALCO's design criteria and standard practice is to limit the voltage variations to within ± ± ± ± 5% of the nominal and the maximum voltage regulation to 3% at all times. The objective is to address and meet the specific requirements of electricity-users particularly prime customers in view of the proliferation and utilization of sensitive microprocessor- based equipment. In some areas however, the criteria may vary due to technical and field condition constraints. Module 1 / Rev 00 / September 12, 2012

  11. III. Guidelines Service Availability – General (Allowable Frequency Variations) • nominal fundamental frequency shall be 60 Hz • MERALCO shall design and operate its system to assist the System Operator in maintaining the fundamental Frequency within the limits of 59.7 Hz and 60.3 Hz during normal conditions. Module 1 / Rev 00 / September 12, 2012

  12. III. Guidelines Secondary Voltage Service (Nominal Low Voltage) 230 Volts, Single Phase (1Ø), Two (2)-Wire 230 Volts, Single Phase (1Ø), Three (3)-Wire 230 Volts, Three Phase (3Ø), Four (4)-Wire 400/230 Volts, Three Phase (3Ø), Four (4)-Wire (Grounded Wye) 460/265 Volts, Three Phase (3Ø), Four (4)-Wire (Grounded Wye) Module 1 / Rev 00 / September 12, 2012

  13. III. Guidelines Secondary Voltage Service (Limitations) • The maximum allowable demand load for single phase service applications is 75 kW. Single-phase service applications with demand load requirement of more than 75 kW shall be served at three-phase service. • The minimum demand load requirement for three phase service applications, if there are no existing three-phase facilities or immediate complimentary development in the vicinity, is 20 kW. Module 1 / Rev 00 / September 12, 2012

  14. III. Guidelines Secondary Voltage Service (Limitations) • Three-phase service applications with demand load requirement of less than 20 kW, under the mentioned field conditions, shall be served at single phase service. Module 1 / Rev 00 / September 12, 2012

  15. III. Guidelines Secondary Voltage Service (Limitations) Maximum capacity of MERALCO-supplied transformer for non-residential secondary service applications : 230 Volts : 1000 kVA 400 Volts : 1000 kVA 460 Volts : 2000 kVA Module 1 / Rev 00 / September 12, 2012

  16. III. Guidelines Secondary Voltage Service (Limitations) • load requirements of more than the indicated capacities shall be served at primary voltage levels • applicant shall provide his own substation and/or distribution facilities except : a) Residential condominium applications may be provided with additional transformer banks as determined by MERALCO. Module 1 / Rev 00 / September 12, 2012

  17. III. Guidelines Secondary Voltage Service (Limitations) b) Commercial buildings may be provided with another transformer bank subject to the following conditions: • separate set of meter/s per bank, and separate contract and billing for each meter • no interconnection on the loadside installation Module 1 / Rev 00 / September 12, 2012

  18. III. Guidelines Secondary Voltage Service (Limitations) • additional transformer bank shall be installed only when the need arises. Should the customer insist to have the two transformer banks immediately, the customer(s) shall guarantee the applicable GMBD of each bank and there shall be no suspension of GMBD. Module 1 / Rev 00 / September 12, 2012

  19. III. Guidelines Secondary Voltage Service (Limitations) • Provision of another bank is an accommodation and an exception to the guidelines on primary metered service. The corresponding GMBD requirements shall be applied in accordance with the prevailing policies on GMBD. • The two (2) transformer banks shall be the maximum secondary service that can be granted to the applicant. Module 1 / Rev 00 / September 12, 2012

  20. III. Guidelines Secondary Voltage Service (Requirements) • service shall be metered at the secondary voltage side • service entrance shall be located along the property line not more than 30 meters horizontal distance from nearest MERALCO’s secondary existing facilities • Otherwise, the application shall be covered by a project study for the extension of facilities. (Related guidelines in accordance with ERC rules apply) Module 1 / Rev 00 / September 12, 2012

  21. III. Guidelines Secondary Voltage Service (Requirements) For service applications in the network area, the applicant shall provide a space inside the building premises for MERALCO’s transformer if: • • total connected load of the building is more than 40 kW or; total building floor area is more than 280 square meters Module 1 / Rev 00 / September 12, 2012

  22. III. Guidelines Primary Voltage Service (Nominal Voltages) • 13.2/7.62 kV Three Phase (3Ø), Four (4)-Wire (Grounded Wye) • 13.8/7.97 kV Three Phase (3Ø), Four (4)-Wire (Grounded Wye) • 34.5/19.92 kV Three Phase (3Ø), Four (4)-Wire (Grounded Wye) • 69/39 kV Three Phase (3Ø), Four (4)-Wire (Grounded Wye) • 115/66 kV Three Phase (3Ø), Four (4)-Wire (Grounded Wye) Module 1 / Rev 00 / September 12, 2012

  23. III. Guidelines Primary Voltage Service (Nominal Voltages) Other primary (odd) voltages maintained by MERALCO but no longer available to applicants. • 6.24 /3.60 kV, Three Phase (3Ø), Four (4)-Wire (Grounded Wye) • 4.8 kV, Three Phase (3Ø), Three (3)-Wire (Delta) Note: These odd voltages are now programmed for phase-out and conversion to standard voltages. Module 1 / Rev 00 / September 12, 2012

  24. III. Guidelines Primary Voltage Service (Applications) • when the demand load is greater than the allowable transformer capacities for a secondary voltage service • when the contracted capacity necessitates a minimum transformer capacity to 150 kVA Module 1 / Rev 00 / September 12, 2012

  25. III. Guidelines Primary Voltage Service (Applications) • when the applied service voltage is different from the nominal secondary voltages offered by the Company provided that the applicant’s contracted capacity necessitates a minimum transformer capacity of 150 kVA • single phase primary voltage service may be provided on a case-to-case basis, depending upon the feasibility, as determined by MERALCO Module 1 / Rev 00 / September 12, 2012

  26. III. Guidelines Primary Voltage Service (Applications) • Service applications with voltage disturbing loads such as arc furnace, large motor loads, etc., shall be either required to install anti-flickering devices or be served at sub-transmission voltage as determined by MERALCO. Module 1 / Rev 00 / September 12, 2012

  27. III. Guidelines Primary Voltage Service (Applications) • Service applications in areas served by 34.5 kV system with ultimate load of 10 MVA and above may be served at 115 KV sub-transmission voltage as determined by MERALCO through a Distribution Impact Study. • Service applications in areas served by 13.8 kV or 13.2 kV systems with ultimate load of 7 MVA and above may be served at either 69KV or 115KV sub-transmission voltage as determined by MERALCO through a Distribution Impact Study. Module 1 / Rev 00 / September 12, 2012

  28. Module 1 / Rev 00 / September 12, 2012

  29. III. Guidelines Primary Voltage Service (Requirements) • service shall be metered at the primary voltage side • applicant shall provide space, as determined by MERALCO, for the installation of the necessary metering facilities • applicant shall provide, install and maintain all electrical facilities after the metering point (i.e., transformers, distribution facilities, main primary service protection, etc.) Module 1 / Rev 00 / September 12, 2012

  30. III. Guidelines Primary Voltage Service (Requirements) • Applications for primary voltage service shall be covered by a Distribution Assets Study (DAS) and/or a Distribution Impact Study (DIS) for the extension and installation of the necessary electrical facilities. (ERC guidelines apply.) • Other technical requirements and specifications may be required during the actual evaluation of the application. Module 1 / Rev 00 / September 12, 2012

  31. Module 1 Service Standards for Service Availability Module 1 / Rev 00 / September 12, 2012

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