Tenaga Nasional Berhad

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v. The panel cover and metal plate with TNB’s meter(s) mounted thereon shall be able to swing or open out for at least one right angle i.e. 90 o . vi. vii. The meter panel cover and metal plate shall have at least two metal hinges. Appropriate bushing shall be provided in all openings/ holes for the meter wiring. 5.3 LVCT Metering Installation Requirements i. The height from the ground to the top of the meter panel shall not exceed 1.8 meters. ii. iii. iv. The switchboard shall be completed with all its components and accessories installed, and shall be mounted securely in its final position before the TNB’s meter(s) can be installed. There shall be working space of 1 m in front of the meter panel for the meter installation and meter reading. In the case of meter cubicle, there shall be working space of 1 m all round the cubicle. A 12 core 2.5 mm 2 or 4 mm 2 steel wire armoured cable shall be provided between the meter panel and current transformers and voltage source. The armoured cable shall not be buried or enclosed v. A 6.0 mm tap-hole plus screw/washer shall be provided on each busbar to facilitate connection of the voltage supply to the meter voltage coils. 5.4 Mounting of Metering LVCTs i. Current transformers shall be mounted on incoming busbar for easy installation, removal or replacement, where necessary. ii. iii. iv. Proper bakelite clamps shall be provided to secure the metering current transformers in position. Adequate insulation shall be provided between the metering current transformers and the busbar. Where the incoming supply is controlled by a circuit breaker in consumer’s main switchboard, the metering CTs shall be installed before the circuit breaker and the meter voltage connections made. v. A two leaf door provided with hasp for locking facility shall be used to close the CT chamber. vi. There shall be working space of minimum 1 m from the back of the switchboard to the wall for installation of metering current transformers. TENAGA NASIONAL B E R H A D 57
vii. Dimension for LVCTs are as shown in Table 2 for the appropriate sizing of the busbar. Table 2 C.T Ratio Internal Diameter External Diameter 100/5 35 mm 90 mm 150/5 40 mm 90 mm 200/5 40 mm 90 mm 300/5 60 mm 100 mm 400/5 60 mm 100 mm 500/5 65 mm 125 mm 600/5 65 mm 125 mm 800/5 65 mm 125 mm 1000/5 85 mm 125 mm 1200/5 100 mm 140 mm 1600/5 100 mm 140 mm 2000/5 110 mm 145 mm viii. The Electrical consultant Engineer / Electrical Wiring Contractor shall ensure the above requirements are complied wih. Should there be any deviation(s) from the requirements, he should consult the TNB Distribution Division Local Office. 6.0 MEDIUM AND HIGH VOLTAGE METERING 6.1 General Currrent transformers (CTs) and potential transformers (PTs) for all metering shall be provided by the consumer. A consumer shall be required to install suitable metering CTs and PTs at his incoming switchgear at his own expense following TNB’s specifications and subjected to test by TNB. A floor mounted metering cubicle as per Appendix 19, Drawing No. 7A-7L shall be provided by the consumer in the specified metering room for the installation of TNB’s meter. The schematic drawings together with the load data using the form as in Appendix 20 are required to be forwarded to the TNB Metering Services HQ/Regional for his advice on the metering requirements. All drawings must be signed by a Professional Engineer. 58 TENAGA NASIONAL B E R H A D
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Vision To be among the leading c
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CONTENTS SUPPLY APPLICATION 1.0 Ten
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1.0 TENAGA NASIONAL BERHAD ELECTRIC
Page 8 and 9: e) Elektrik Bestari TNB provides el
Page 10 and 11: 1.10 Types Of Supply Application Al
Page 12 and 13: 1.18 Tariff Please refer to the Tar
Page 14 and 15: 2.4 TNB Supply Lead Time The flowch
Page 16 and 17: Stage Description 2 TNB Register Ap
Page 18 and 19: Steps Action Reference 2 After appr
Page 20 and 21: Steps 7 8 Action Advise applicant t
Page 22 and 23: CONTENTS Page 1.0 PLANNING FOR C
Page 24 and 25: 1.1.1.1 Technical Requirements For
Page 26 and 27: Should a preliminary examination of
Page 28 and 29: • Capacitance connected in parall
Page 30 and 31: SECTION 2.0 PLANNING AND DESIGN CRI
Page 32 and 33: For the purpose of this guideline,
Page 34 and 35: Table 2.3.4.1: Voltage limits on sw
Page 36 and 37: 2.3.5.6 If under the operating cond
Page 38 and 39: Table X: Planning Levels for Harmon
Page 40 and 41: 3) At the terminals of a Customer
Page 42 and 43: 2.5.3 Protection System Evaluation
Page 44 and 45: 3.2 Group Diversity Group diversity
Page 46 and 47: - 132/33kV, 2 x 90 MVA - 132/22kV,
Page 48 and 49: The establishment of transmission m
Page 50 and 51: CONTENTS Page ABBREVIATIONS .......
Page 52 and 53: 1.0 GENERAL REQUIREMENTS 1.1 All th
Page 54 and 55: ii. iii. iv. The tickness of board
Page 56 and 57: 4.0 GROUP METERING FOR WHOLE CURREN
Page 60 and 61: 6.2 Specifications For Metering PTs
Page 62 and 63: 6.7.2 Outdoor Breakers A ‘marshal
Page 64 and 65: GLOSSARY AND DEFINITIONS In this gu
Page 66 and 67: Embedded Generating Unit A generati
Page 68 and 69: Protection Protection Apparatus Pro
Page 70 and 71: Appendix Topic Page 1 List of Kedai
Page 72 and 73: Appendix 1 List of Kedai Tenaga in
Page 74 and 75: Appendix 1 List of Kedai Tenaga in
Page 76 and 77: Appendix 3 PERMOHONAN BEKALAN ELEKT
Page 78 and 79: Appendix 5 TENAGA NASIONAL B E R H
Page 80 and 81: Appendix 7 PART B : TNB SUPPLY APPL
Page 82 and 83: Appendix 9 JOINT MEETING ACTION LOG
Page 84 and 85: Appendix 11 SAMPLE OF APPOINTMENT L
Page 86 and 87: Appendix 12 Load Category Total lig
Page 88 and 89: Appendix 13 LOCATION PLAN TENAGA NA
Page 90 and 91: Aku Janji dan Tanggungrugi *Pemilik
Page 92 and 93: Appendix 16 Demand forecast and sub
Page 94 and 95: Appendix 17 SUBSTATION LAYOUT DRAWI
Page 96 and 97: Appendix 18 SITE PLAN / LOCATION PL
Page 98 and 99: Appendix 18 LOGO DETAIL FOR DOUBLE
Page 100 and 101: Appendix 19 (Drawing 7B) MV/HV, 1 O
Page 102 and 103: Appendix 19 (Drawing 7D) 3 FEEDER M
Page 104 and 105: Appendix 19 (Drawing 7F) MV/HV, 3 F
Page 106 and 107: Appendix 19 (Drawing 7H) 1, 2, 3 OR
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Appendix 19 (Drawing 7J) 1, 2, 3 OR
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Appendix 20 TENAGA NASIONAL B E R H
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Appendix 22 DRAWING NO 2A : SINGLE
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Appendix 23 DRAWING NO 3A : OUTDOOR
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Appendix 25 DRAWING NO 4A : 3 PHASE
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Appendix 25 DRAWING NO 4C : 3 PHASE
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Appendix 26 DRAWING NO. 4E TENAGA N
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Appendix 27 DRAWING NO 5A : SINGLE
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Appendix 27 DRAWING NO 5C : SINGLE
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Appendix 28 DRAWING NO 5E: 3 PHASE
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Appendix 29 TENAGA NASIONAL B E R H
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