Volume 8 – Mechanical and Electrical Services - Malaysia Geoportal

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Chapter 7 ELECTRICAL SERVICES APPENDIX 7E SAMPLE CALCULATION FOR GENERATOR POWER RATING REQUIREMENT Calculating the generator power rating requirement for the pumping station with the following loads:- Starting Running Item KVA KW KVA KW Total lighting and small 17.5 Power loads (G.L.) 20.13 28x0.415x1.732x0.85 =17.1KW . Start the 1 st pump 10hpx5.3kVA/hp 53 53kVAx0.85pf 45 Add G.L.load 20.13 17.5 20.13 17.5 Total 73.13 62.5 20.13 17.5 Run the 1st pump At 0.88 efficiency 10hpx0.746KW/hpx1/0.88 10.0 8.5 Add G.L .load 20.13 17.5 Total 30.13 26.0 Start the 2nd pump 10hpx5.3kVA/hp 53 53kVAx0.85pf 45 Run 1 st pump and G.L .load 30.13 26 30.13 26 Total 83.13 71 30.13 26 Run the 2 pump At 0.88 efficiency 10hpx2x0.746KW/hpx1/0.88 19.95 16.96 Add G.L .load 20.13 17.5 Total 40.08 34.46 Start the 3rd pump 10hpx5.3kVA/hp 53 53kVAx0.85pf 45 Run 2 pump and G.L. load 40.08 34.46 40.08 34.46 Total 93.08 79.46 40.08 34.46 Run the 3 pump At 0.88 efficiency 10hpx3x0.746KW/hpx1/0.88 29.92 25.43 Add G.L .load 20.13 17.5 Total 50.05 42.93 The critical generator loads are the KVA and KW for starting the third pump. During the start, the first two running motors can act momentarily for half a cycle as generators and, hence, reduce the demand on the generator, but the effect lasts much less than a second and is difficult to assess, so the effect is ignored, especially as it may take up to 6 second to start the 3 rd pump. The calculated KVA required is 93.08 KVA. Assuming that the generator efficiency as 0.85, the aging factor for 5 years is 0.8 and additional spare capacity required is 20%. The generator size is = 93.08x 1.2 KVA 0.85x0.8 = 164.26 KVA Hence the generator size selected shall be 175 KVA March 2009 7A-5
Chapter 7 ELECTRICAL SERVICES APPENDIX 7F SAMPLE INSPECTION FORMAT FOR SWITCHBOARD MAIN SWITCHBOARD INSPECTION CHECK LIST TITLE OF PROJECT: ITEM DESCRIPTION CONDITION REMARK A Main Switch Room A.1 Clean the M.S. Room A.2 Record all main switch gears calibration value into the log book. A.3 Check all indicating lighting. A.4 Check all metering panel:- (a) (b) Voltmeter Ammeter or Digital multimeter A.5 Date of calibration for all switchgears protection relays A.6 Check all labeling are in order. A.7 As built drawing condition in order. A.8 CPR chart available. A.9 Rubber floor mat available. A.10 Fire fighting system licensed valid. A.11 Physical condition in order. 7A-6 March 2009
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GOVERNMENT OF MALAYSIA DEPARTMENT O
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DID MANUAL VOLUME 8 Foreword The fi
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DID MANUAL VOLUME 8 Registration of
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DID MANUAL VOLUME 8 List of Volumes
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DID MANUAL VOLUME 8 TNB TSHD USBR T
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Chapter 1 PUMPING INSTALLATION Tabl
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Chapter 1 PUMPING INSTALLATION Figu
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1.1 TYPE OF PUMPS USED IN DID Chapt
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Chapter 1 PUMPING INSTALLATION Fig.
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Chapter 1 PUMPING INSTALLATION Wate
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Chapter 1 PUMPING INSTALLATION Moni
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Chapter 1 PUMPING INSTALLATION b) P
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Chapter 1 PUMPING INSTALLATION 1.9
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Chapter 1 PUMPING INSTALLATION a) W
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Chapter 1 PUMPING INSTALLATION c) A
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Chapter 1 PUMPING INSTALLATION Fig
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Chapter 1 PUMPING INSTALLATION Gene
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Chapter 1 PUMPING INSTALLATION Fig
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Chapter 1 PUMPING INSTALLATION Comm
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Chapter 1 PUMPING INSTALLATION - In
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Chapter 1 PUMPING INSTALLATION APPE
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Chapter 1 PUMPING INSTALLATION (6)
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1 CHAPTER 2 GATE DESIGN
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Chapter 2 GATE DESIGN APPENDIX 2B M
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Chapter 2 GATE DESIGN (This page is
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Chapter 2 GATE DESIGN a) Dam - rete
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Chapter 2 GATE DESIGN Figure 2.5 He
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Chapter 2 GATE DESIGN g) Offtake -
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Chapter 2 GATE DESIGN Figure 2.9(c)
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Chapter 2 GATE DESIGN Some common r
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Chapter 2 GATE DESIGN Figure 2.13 T
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Chapter 2 GATE DESIGN b) High press
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Chapter 2 GATE DESIGN Figure 2.18 H
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Chapter 2 GATE DESIGN Bulkhead gate
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Chapter 2 GATE DESIGN Table 2.1 Cor
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2.4.1 Materials for Hydraulic Gates
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Chapter 2 GATE DESIGN Corrosion mit
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Chapter 2 GATE DESIGN 2.6 GATE TEST
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Chapter 2 GATE DESIGN 1.0 GENERAL T
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Chapter 2 GATE DESIGN APPENDIX 2B M
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Chapter 2 GATE DESIGN a) Sill Beam
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1.0 PURPOSE Chapter 2 GATE DESIGN A
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Chapter 3 GROUND WATER FACILITIES T
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3.1 INTRODUCTION Chapter 3 GROUND W
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Chapter 3 GROUND WATER FACILITIES F
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Chapter 3 GROUND WATER FACILITIES O
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Chapter 3 GROUND WATER FACILITIES D
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Chapter 3 GROUND WATER FACILITIES T
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CHAPTER 4 OCCUPATIONAL SAFETY AND H
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Chapter 4 OCCUPATIONAL SAFETY AND H
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Chapter 5 PLANT MANAGEMENT AND CONT
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5.1 INTRODUCTION Chapter 5 PLANT MA
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Chapter 9 ASSET MANAGEMENT 9.4.3.6
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Chapter 9 ASSET MANAGEMENT Kementer
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Chapter 9 ASSET MANAGEMENT Table 9.
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Chapter 9 ASSET MANAGEMENT • Pega
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Chapter 9 ASSET MANAGEMENT f) Mempe
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9.4.5.17 Tukar barang (Barter trade
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Langkah-langkah yang perlu diambil:
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Chapter 9 ASSET MANAGEMENT 9.4.6.6
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CHAPTER 10 SCADA AND AUTOMATION SYS
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Chapter 10 SCADA AND AUTOMATION SYS
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