Tenaga Nasional Berhad

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e) Elektrik Bestari TNB provides electricity advisory for the home. Our Kedai <strong>Tenaga</strong> has an Elektrik Bestari corner which provides consumers with basic information on energy efficiency, safety and related topics. For enquiries on electricity advisory, consumers may enquire at any nearest Kedai <strong>Tenaga</strong>. 1.4 Voltages The transmission voltage networks are 500kV, 275kV and 132kV, whilst the distribution voltages are 33kV, 11kV and 415/240 Volts. However, in the case of certain parts of Johor & Perak the distribution voltages may also include 22kV and 6.6kV. 1.5 Supply Frequency The supply frequency is 50Hz ± 1%. 1.6 Earthing System High Voltage and Extra High Voltage • 3 phase configuration • solidly earthed or impedance earthed • overhead lines and underground cable are used extensively for high and extra high voltage distribution Low Voltage 415/240V • 3 phase 4 wire system • neutral point solidly earthed mixture of overhead lines, underground cables and aerial insulated cables • mixture of overhead lines, underground cables and aerial insulated cables 1.7 Short Circuit Ratings As a guide, the maximum fault levels for the various voltage systems are as follows. All equipment proposed to be installed and connected to TNB supply must comply with the stated short circuit ratings: System Short circuit rating for 3s i. 500kV 50 kA ii. 275kV 40 kA iii. 132kV 31.5 kA iv. 66kV 20 kA v. 33kV 25 kA vi. 22kV 20 kA vii. 11kV 20 kA viii. 6.6kV 20 kA ix. 415/240 V 31.5 kA TENAGA NASIONAL B E R H A D
1.8 Act, Regulation and Code The electricity supply and installation practice in Peninsular Malaysia are governed by the following :- 1 Electricity Supply Act 1990 – Act 447 2 Licensee Supply Regulations 1990 3 Electricity Regulations, 1994 4 Occupational, Safety & Health Act 1994 5 Malaysian Standard MS IEC 60364 Electrical Installation of Buildings 1.9 Supply Voltage Options Supply may be provided at any of the declared voltages :- 275 kV, 132kV, 33kV, 22 kV*, 11kV, 6.6 kV* and 415/240V. Generally, supplies to domestic premises are given at single phase 2-wire or three phase 4-wire. However, the actual supply voltage provided depends on the magnitude of the individual applicant’s load requirements :- Low Voltage i. Single-phase, two-wire, 240V, up to 12 kVA maximum demand ii. Three-phase, four-wire, 415V, up to 45 kVA maximum demand iii. Three-phase, four-wire, C.T. metered, 415V, up to 1,000 kVA maximum demand Medium Voltage & High Voltage i. Three-phase, three-wire and 11kV for load of 1,000 kVA maximum demand and above ii. Three-phase, three-wire, 22kV or 33kV for load of 5,000 kVA maximum demand and above iii. Three-phase, three-wire, 66kV, 132kV and 275kV for exceptionally large load of above 25 MVA maximum demand It should be noted that voltages other than the above classifications couldn’t be provided by TNB. However, consumers can make their own transformation arrangements where necessary. ∗ System for certain parts of Johor and Perak only. TENAGA NASIONAL B E R H A D
Page 2 and 3: Vision To be among the leading c
Page 4 and 5: CONTENTS SUPPLY APPLICATION 1.0 Ten
Page 6 and 7: 1.0 TENAGA NASIONAL BERHAD ELECTRIC
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
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v. The panel cover and metal plate
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6.2 Specifications For Metering PTs
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6.7.2 Outdoor Breakers A ‘marshal
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GLOSSARY AND DEFINITIONS In this gu
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Embedded Generating Unit A generati
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Protection Protection Apparatus Pro
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Appendix Topic Page 1 List of Kedai
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Appendix 1 List of Kedai Tenaga in
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Appendix 1 List of Kedai Tenaga in
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Appendix 3 PERMOHONAN BEKALAN ELEKT
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Appendix 5 TENAGA NASIONAL B E R H
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Appendix 7 PART B : TNB SUPPLY APPL
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Appendix 9 JOINT MEETING ACTION LOG
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Appendix 11 SAMPLE OF APPOINTMENT L
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Appendix 12 Load Category Total lig
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Appendix 13 LOCATION PLAN TENAGA NA
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Aku Janji dan Tanggungrugi *Pemilik
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Appendix 16 Demand forecast and sub
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Appendix 17 SUBSTATION LAYOUT DRAWI
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Appendix 18 SITE PLAN / LOCATION PL
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Appendix 18 LOGO DETAIL FOR DOUBLE
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Appendix 19 (Drawing 7B) MV/HV, 1 O
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Appendix 19 (Drawing 7D) 3 FEEDER M
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Appendix 19 (Drawing 7F) MV/HV, 3 F
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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 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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