reading / British practice / Vol D - 1990 (ocr) ELECTRICAL SYSTEM & EQUIPMENT

AC commotator motors. 626 AC cons crier drives

ri ble pecd. 626-62 7' Access covers

portable earth

isolated phase busbars, 310 Access lighting, 599

cranes, 817 Access platforms enclosures

isolated phase busbars, 313 Access ways

lighting, 593 Accommodation

batteries, 757-760 telecommunications rooms. 652

Active failure rate power systems

reliabriity evaluation, 92 Actuator drives

low voltage switchgear capability, 391

Advance angle synchronising

definition, 950 Advanced gas-cooled reactors

auxiliaries systems, 16 cables

segregation, 436 cabling, 430

electric motors, 641-642 loss of grid supplies, 34 Olympus gas turbines, 36 oxygen, 821

station electrical systems analysis diagram, 152

computer reliability analysis, 166

Air

circuit-breaker switching Dinorsvig, 345

Air admission valves pumped-storage plant

protection, 914 Air compressors

automatic operation fire fighting, 863

diesel generators, 784 electric motors, 858 electrical services, 858-861 fire fighting, 863

Air conditioning

electrical services, 862 enclosures

isolated phase busbars, 309 Air heaters

electrical services, 862 Air pipework

diesel generators, 784 Air receivers

diesel generators, 784 testing, 795

Aircraft obstruction lighting, 598 Alarm bells

power feeds cabling, 491

Alarm signals

siren systems. 722

Alarms (see also Audible alarms; Emergency alarm signals; Nuclear alarms)

battery chargers, 769,772 control boards, 772

conservators

low oil level, 904

DC systems. 766 diesel generators, 792

testing, 796 fire fighting, 863 lists, 820 remote

uninterruptable power supply systems, 62 thermostats

gas production plant, 824 Alum dosing pumps

water treatment plant

power distribution. 840 Aluminium

cables, 435 conductors

generator connections, 288 power cable fittings, 533

electric motors, 629

generator main connections, 304 power cable fittings

bolting, 535 preparation

termination connections, 535 Aluminium hydroxide

additive

ethyl vinyl acetate, cables, fire performance, 526 Ambient temperature

cables

maximum operating temperature, 450 Ambulance services

communication links, 650 Ammeters

switchgear, 373 low voltage, 405

Amplitude modulation telecommunications, 680

Analogue signals

control and instrumentation cables, 476

Analysis reliability

power systems, control, 96 Analysis parameters

power systems

computer reliability analysis, 161 Antennas. 684

coaxial cables

characteristic impedance, 686 coupling equipment, 702

input impedances, 687 leaky feeders, 691 lightning protection, 705

mounting arrangements. 687 power handling capability, 687 radiating cables, 691

radio frequency received power, 684 radio paging systems, 667

radio systems

pumped-storage power stations, 736 telecommunications, 684-696

typical arrangements, 689 vehicle, 714

Anti-collision systems cranes, 679, 816

Antimony trioxide additive

polyvinyl chloride, cables, fire performance, 526

Arcing

DC switchgear, 413

Arcing rate

electrostatic precipitators, 854 Arcing time

Fuses

definition, 412 Area grids

control centres communication links. 650

Amiour loss ratios cables, 451

Armour wire

cross-sectional area, 616 Asbestos

fire barriers, 548

Ash

handling plant

electrical services, 842-851 Ash hoppers

mobile

electrical control, 848 Aspiration

diesel generators, 788

Asynchronous generator synchronising, 952 Asynchronous system synchronising, 952 Audible alarms

cabling, 491

Audible calling units. 721 Audible warning systems, 652

auxiliary telecommunications room, 653 Auto loading

diesel generators performance tests, 797

Auto starting

diesel generators Performance tests. 797

Automatic controls

air compressors, 859 Automatic synchronising, 955,957

burdens, 978

steam turbine-generators

generator voltage circuit-breakers, 982 Automatic synchronising relays, 956,957,969 Automatic voltage control

electrostatic precipitators, 854 Automatic voltage regulators

data

load flow analysis, power systems, computer reliability analysis, 145

stability analysis. 183 diesel generators, 791

performance tests, 797 testing, 796

generator transformers protection, 904

loss of grid supplies, 33 models

stability analysis, 181 power systems

performance analysis, 179 stability analysis

power systems, 180 system stability analysis, 184

Auxiliary electrical systems computer reliability analysis, 136

Auxiliary pOwer systems fault levels, 326 voltages, 326

Auxiliary switches, 369 Auxiliary systems

protection, 920-943

Auxiliary Telecommunications Room, 652.653 Auxiliary transformers

air-cooled, 264 cast-resin insulation, 265 cooling, 263

design, 263 insulation, 263

magnetising inrush currents, 269

synthetic liquid filled, 267 Average outage duration

GRASP 1

presentation of results, Ill power systems

reliability, quantitative evaluation, 90 Average repair time

power systems

reliability evaluation, 92 Avon gas-turbine generating set

electrical auxiliaries systems. 35

Back to back starting pumped-storage plant

protection, 911 Ball bearings

electric motors, 636 Barring gear

diesel generators, 782 protection, 793

Battery chargers —see Chargers

Batteries (see also Lead acid cells; Plante batteries; Recombination cell batteries), 749-763

accommodation, 757-760 ambient temperatures, 757 boost charging, 761

control, 772 capacity, 750 cell life, 761

charging, 750,760-763 circuit monitoring, 769 connectors

corrosion, 762 containers, 750

failure, 762 corrosion

acid/air interface, 761 current feedback

control boards, 771

direct wire telephone systems, 722 discharge, 750

discharge rate, 750 electrical systems, 69-70 electrolytes

contamination, 762 emergency supply equipment, 749 fire fighting, 867

fully charged, 750 initial charge, 767 inspection, 762 life. 763

limited voltage recharging, 761 maintaining charge, 767 maintenance, 760-763 maintenance-free, 749 negative plates, 750 nickel-cadmium cells, 752 on-site testing, 760-763

pasted flat plate lead-acid cells, 751 plate groups, 750

plates, 750 positive plates, 750 rating, 750

recombination cells, 752 replacement, 763 sealed lead-acid, 752 separators, 750 temperature, 750 terminals

corrosion, 762 tests, 760-763

tubular plate lead-acid cells, 750 types, 750-753

uncharacteristic behaviour of odd cells, 763 uninterruptable power supply systems, 60 voltage, 749 •

Battery rooms, 757

access. 760 lighting, 597

main connections, 757 ventilation, 757

Battery systems, 763-766

DC systems tests, 763

duplication, 766 float charging, 760

Beam clamps

cable support systems, 498

Bearings (see also Ball bearings; Frictionless bearings; Plain bearings; Rolling element bearings; Split-type roller bearings; Tilting-pad bearings)

electric motors, 635-637 pumped-storage plant

protection, 9 11,914 Bellows

insulation

isolated phase busbars, 305 Bidirectional branches

power systems

computer reliability analysis, definition. 95 Black start

electrical systems, 29 gas-turbine generators, 35

B lowdown air admission valves pumped-storage plant

protection, 914 Body proximity loss

radiating cable, 693 Boiler feed pumps

electric switchgear, 38

electric motors, 640 electrical systems, 39

Boiler feedwater chemical-dosing plant

electrical services, 836 Boiler houses

cables, 506

Boiler make-up feedwater treatment, 836

electrical services, 835

Boilers

circulating pumps protection, 878

protection, 871-879 Bolting

terminations

power cable fittings, 535 Boost charging

batteries, 761,762,767 control, 772

Booster pumps

water treatment plant power distribution, 839

Brackets

cable support systems, 496 Brakes

lifts, 819 Braking resistors

loss of grid supplies, 33 Braking systems

cranes, 811 Branches

definition

power systems, computer reliability analysis, 95 power systems

computer reliability analysis, numbering, 94

Brass preparation

termination connections. 536 British Telecommunications plc

cables, 659

on-site duct routes, 659 on-site requirements, 659 segregation, 659

circuits

electrical isolation, 660 communication links. 650 construction sites, 741 national cable network

access, 658-660 telephone services, 660-662

Bromotnfluoromethane fire fighting, 862

Building factor transformers

cores, 200 Buildings

lightning protection, 582 special considerations, 583

metal decking

lightning protection, 582 Busbar indices

evaluation techniques

power systems, computer reliability analysis, 105 GRASP 1

presentation of results, 111,112 power systems

computer reliability analysis, 113-115 Busbars (see also Isolated phase busbars)

data

load flow analysis, power systems, computer reliability analysis, 144

DC switchgear

short-circuit withstand strength, 414 earthirig

switchgear, 368 low voltage switchgear

short-circuit withstand strength, 391 materials

generator main connections, testing, 315 phase angles

system stability analysis, 184

PQ

load flow analysis, 123 protection. 930

PV

load flow analysis, 123 slack

load flow analysis, 124

power systems, computer reliability analysis, 147 switchgear

low voltage, 402

rated short-time current, 380

types

load flow analysis, 123 voltages

system stability, 183

system stability analysis, 184 Bushings

connections transformers, 228

generator main connections testing, 314

Cl channels

surface mounting

cable support systems, 497 Cab control

cranes, 811 Cable boxes

connections transformers, 231

Cable flats lighting, 593

Cable glands, 531-533 bonding

earthing systems. 550 construction, 531 design, 531

earth bonding, 568 earthing bond connections

sizes, 567 installation, 533 sizing, 532

Cable interface loss radiating cable, 694

Cable nem ork systems applications. 486 design. 486 jumpenng, 482 494

Cable palling hand, 520

installation, 519 Jamming. 520 motorised rollers, 521

running bond techniques. 521 winch, 520

Cable support systems application, 501

bridge and tower assemblies, 505 design, 501

ladder racks, 517 Cable supports

seismically qualified, 509 Cable systems, 429-435

control and instrumentation design, 480-482

design, 601. 603

design and management techniques, 601-606 heat-detecting, 865

layout, 429-435, 603 planning, 601

Cables (see also Coaxial cables: Control cables; Earth bond cables; Earth cables; Linear heat detecting cables; Radiating cables: Short-time fireproof cables; Triaxial cables)

415 V, 441

3.3 kV, 439-441

11 kV, 437-439 accessories, 531-540 auxiliary systems

protection, 930

British Telecommunications plc, 659 bunched

fire performance, 523 buried direct in the ground

installation, 457, 517

thermal parameters, rating factors, 614 thermal resistance, 452

cable support systems, 494-512 design, 494

design and management, 603 carriers, 499

cleating design. 513

concrete troughs installation, 517

continuous operation current rating, 448

contract management information, 604 control and instrumentation. 476-494 corrosive gases

fire performance, 529 current ratings

permissible, 453 DC power circuits, 441 design, 442-443 design clearance, 604 ducts

installation, 457, 517

thermal parameters, rating factors, 615 thermal resistance, 453

elastomeric-insulated current ratings, 610

electric motors starting, 463 starting current, 463 starting times, 464

electrical tests, 447

fire barriers, 540-550 fires, 545

installation, 435, 512-522, 604 reduced fire propagation, 523

insulation cables, 443

interference

control and instrumentation. 476 layout, 435

linear heat detecting, 442 maximum route lengths, 618 maximum temperature

ambient temperature, 450 mechanical performance, 444-447 multicore

interference, 480

interference, control and instrumentation, 480 shaped solid aluminium conductors, 535

multicore PVC-insulated reactance, 609 resistance, 609

multipair

earthing networks, 566

interference, comml and instrumentation. 477 paper insulation, 437

performance

fire conditions, 522-531 PVC-insulated

current ratings, 611 rating factors, 454 reactance, 608

reactor safety trip systems, 434 restraint, 512

routing, 604 safety

nuclear power stations, 431 scheduling, 604

segregation, 429 separation, 429

short-time fireproof, 442, 522 single

fire tests. 523 single-core, 438

fire performance, 524

in parallel, installation, 457 single-core elastomeric-insulated

resistance. 608 sizes, 466 steelwork

cleating. 513 telephones

ducts, construction sites, 741 thermal resistance, 451

in free air, 452 toxic gas emissions

fire performance, 530 tunnels. 502

lighting, 593 types, 435-447

control and instrumentation, 476 voltage regulation, 464

Cabling, 427-622

control and instrumentation earthing, 569

gland bonding, 569 electrolytic cells

hydrogen production, 825 emergency alarm signals, 724 fire fighting, 866

heating and ventilation. 862 lighting, 600

on-site

future trends, 745

private automatic exchanges, 661 siren systems

nuclear power stations, 732

switchgear, 369 Low voltage, 402

system design, 11 telecommunications

on-site. 661-663 telephones

user distribution frames, 663 total project information, 605

Cage induction motors, 62-1 -625. S02. boiler feed pumps, 640 double-cage rotor. 625

starting current. 624 stator windings, 624 tris lot rotor, 625

Cantilever arms

cable support systems, 502.516 Capacitors

failure rates, 945 generator main connections

testing, 315

Capacity batteries, 749

Capstan effect transformers

performance, 216 Carbon dioxide

storage plant

electrical services, 830 uses, 821

Cartridge fuselink definition. 410

CEGB

corporate telephone network, 650 Cell life

batteries, 761

Central control equipment radio paging systems, 667

Central control rooms control panel

power supplies, 724 controllers

emergency alarm signals, 723 lighting, 598

supervisor's desk

speech communication, 726

Central Electricity Generating Board— see CEGB Certification

switchgear, 334-340 Charger output voltage

uninterruptable power supply systems, 62 Chargers, 766-775

batteries, 69-70 alarms, 769

current feedback, control boards, 771 display, 772

electronic circuit boards, testing, 774 fire fighting, 867

low voltage detection, 769 On-site tests. 774

output voltage, testing, 773 performance tests, 773 power supplies. 768

power supply, control boards, 772 protection, 769

routine tests, 774 soak tests, 774

supply voltage transients, 768 temperature rise tests, 773 testing, 773

type testing, 773 visual checks. 773

equipment, 769 ratings, 767

Charging (see also Boost charging; Float charging) batteries, 750,760-763

Charging systems

duplication, 766 Check inoperative

synchronising, 957

Check synchronising relays, 956,966 Chiller units

electrical services. 862 Chimneys

aircraft obstruction lighting, 598 lightning protection, 578

Chlorination plant electrical systems

maintenance interlocking. 82 lighting. 597

Chlorosulphonated polyethylene rubber cables

fires, 523

Chokes

battery chargers, 768 gas production plant, 822

Circuit-breakers air break

feeder circuits, 467 motor circuits, 468

closed/open state indication, 373

control, 331 DC. 414 definition, 334 design, 352-380

electrical interlocks, 361 fault levels

station electrical systems, computer reliability analysis. 168,169

faults

generators, protection, 905 first-pole-to-clear factor, 356 generator voltage. 895

protection, 905

steam turbine-generators, synchronising, 982 steam-turbine-generators, synchronising supplies, 979 synchronising, 961

generator voltage/HV protection, 905

low voltage, 405

low voltage switchgear capability. 391

maintenance, 379 moulded case

future trends, 422 operating mechanisms, 379 phase-segregated generators

metalclad, 423

rated short-circuit breaking current, 356 rated short-circuit making current, 357 reclosing

power systems, computer reliability analysis. 100 stuck probability

reliability evaluation. 93 transmission voltage

synchronising, 962 type tests, 336

Circuits data

load flow analysis, power systems, computer reliability analysis, 144

stability analysis, power systems, 180 Circulating pumps

boilers

protection, 878 Circulating water pumps

nuclear reactors electric motors, 645

Circulator main drive motors nuclear reactors, 642

Cleating cables. 513

Coal

delivery, 842 handling plant

electrical services, 842-851

Coal plant control rooms electrical control, 844

Coal-fired boiler units electric motors, 640-641

Coal-fired power stations reference design

electrical systems, system indices, 115 Coaxial cables

control and instrumen ation, 476 Coded-key devices

swiichgear, 361

low voltage, 404

Coding

electrical systems quality assurance, 45

Conine Consultatif International de Radio sequential single frequency code signalling, 683 trunked radio systems, 675

Comite Consuliatif International de Telegraphique et Telephonique, 675

dual tone multi-frequency signalling, 683 Commissioning

cable systems, 601 earthing systems, 573 network cable systems, 490

Common mode failure diesel generators, 778 evaluation

power systems, reliability evaluation, 92

rate

power systems, reliability evaluation, 93 Communication systems

commissioning, 651 maintenance, 651

Component active failure power systems

reliability evaluation, 92 Component passive failure

power systems

reliability evaluation, 92 Components

power systems

computer reliability analysis, numbering, 94 Composite error

current transformers, 285 Compressed air

starting system

diesel generators, protection, 793 Compressed air systems

generator main connections testing, 315

Compression fittings power cables

copper conductors, 534 Compressor rooms

lighting, 592

Compressors (see also Air compressors) diesel generators

testing, 795

generator main connections testing, 315

hydrogen production control, 827

Computer programs interactive

power systems, reliability evaluation, 93 power systems

branch numbering, 93 component numbering, 93

reliability evaluation power systems, 91-92

Computers draughting, 159

electrical systems, 74-75 Concrete troughs

cables

installation, 517 Condensates

conductivity

high. protection, 882 polishing plant

electrical services, 836 treatment

electrical services, 835 Condensers

vacuum low protection, 881

Conductors aluminium

generator main connections, 304 power cable fittings, 533

cables

electrical resistance, 451 maximum temperature. 449 temperature rise, 450

connection to plant

isolated phase busbars, 310 continuously-transposed

transformer windings, construction, 208 copper

power cable fittings. 534 crimped terminations

control cables, 537 expansion joints

isolated phase busbars, 306 isolated phase busbars, 304 joints

isolated phase busbars, 311-312 painting

isolated phase busbars, 309 power cables

terminations, 533-537 switchgear

rated short-time current, 380 terminations

control cables, 537-539 thermal parameters

rating factors, 612,613 transformer windings

continuously-transposed strips, construction, 208 windings

transformers, construction, 206 Connections

HV/LV protection, 905

Connectors batteries

corrosion, 762 Conservation

oil

transformers, 227 Conservators

low oil level alarms, 904

Construction sites electrical supplies

equipment, 414-421 telecommunications, 741-744 telephone cable ducts, 741

Contactor gear mechanical plant. 805

Contactors controlgar

gas production plant, 822 low voltage, 406

DC, 414 electrically-held

definition, 334 low voltage switchgear

capability, 391

Continuous tone calling signalling systems radio communications, 673

Control boards

battery chargers, 770 Control cables

conductors

anti-collision systems, 679, 816 ash-grabbing

electrical control, 848 cab control, 811

control station systems, 811-813 control systems

combined LF and VHF/UHF, 679 low frequency radio systems, 677

HF. 678

VHF, 678 controls, 813-816 cross-traverse

electric services, 817 earthing, 817

electrical services, 806-818 floodlights, 817

grabbing

coal unloading, electrical services, 843 long travel

alternative supplies, 817 electric services, 816

maintenance socket outlets, 817 motion control

direction, 807 speed, 807

motor drives, 807 nuclear power stations

DC motors, 807 electrical services, 817

pendant control, 812 power distribution, 807 power supply, 807 radio control, 811 radio systems, 677

travel motion supply systems, 816 travelling

coal unloading, electrical services, 843 Creepage

switchgear

low voltage, 402 Crimped terminations

conductors

control cables, 537 Critical current tests

switches, 338 Cross-linked polyethylene

cables, 437

Crosslinked polythene insulation

cables, 443 Cross-linking

insulation cables, 437

Crossbar systems

telephone exchanges, 664 CURB03, 457

Current limiting reactors design, 276-278

Current making/breaking capability DC switching devices, 414

Current ratings cables

permissible, 453 continuous operation

cables, 448 Current ratio errors

current transformers, 284 Current sharing

cables

single-core, in parallel, 457 Current source converters, 627 Current transformers

auxiliaries protection, 921

battery chargers, 770 construction, 286 design, 281

isolated phase busbars, 309-310

performance curves, 935 protection, 890, 892 switchgear, 372

low voltage, 405 Current-limiting fuselink

definition, 411 Cut set

power systems

computer reliability analysis, 96 Cat -off characteristics

fuses

definition, 41 1 Cut-off current

fuses

definition, 411 Cut-through tests

cables, 446 Cycloconverters, 627

Damper windings turbine-generators

stability analysis, power systems, 180

Data

British Telecommunications plc, 661 telecommunications

construction sites, 744 Data handling systems

electrical systems quality assurance, 45

DC circuits earthing, 67

DC filters

battery chargers, 770 DC motors, 628-629 DC power circuits

cables, 441 DC systems

48 V, 67

110 V, 65 220V, 65 250V, 65 alarms, 766 analysis. 67-69

battery-backed, 763 system tests, 763

design, 65 duties, 64

electrical systems, 64-70 emergency drives. 766 emergency lighting, 766 plant control, 766 switchgear closing, 763 telecommunications, 766 voltage limits, 766

DC transformers

banery chargers, 772

DC tripping systems, 914-920 DC voltage transformers

battery chargers, 770 Decommissioning

electrical systems economics, 37

Definite time relays characteristics. 932

Delta connections

isolated phase busbar, 301 Desulphufisation

flue gases retrofitting, 9

Detectors fires, 865

Dielectrics transformers, 196

Diesel generators, 775-798

3.3kV

synchronising, 963 synchronising supplies, 980

AGR nuclear power stations a uxiliaries systems. 18

air pipework, 788 auxiliaries. 778

c onstruct ion, 790

control, 79 design. 779.790

earthing networks. 565 elecirical deign. 790 einergem suppl:, fault analysis

station electrical systems. computer reliability analysis, 170

Fire protection, 778 harmonic suppressors

earthing networks, 565 in-service operational testing. 797

installation, 775 loading, 775 Location, 778 lubrication, 780

mechanical design, 790 neutral earthing resistors. 565

numbers, 775

operational system tests, 797 protection, 791,792

high winds, 777 purposes, 775 rating, 775

seismic protection, 778 starling, 775,783 station electrical systems

voltage profile, 155 synchronising, 959,974 testing, 794-798

types, 778

water jacket heaters protection, 794

Digital signals

control and instrumentation cables, 476

Dinorwig

circuit-breaker switching

air storage capacity, 345 electrical auxiliaries systems, 22 generator transformers

water cooling, 235 phase-reversal disconnectors, 349 protection, 906

switchgear, 341

Direct wire telephone systems, 653,717-722 common equipment location. 722

Direction of radiation antennas. 685

Disc bushings

isolated phase busbars, 305 Discharge rate

batteries, 749 Disconnectors

definition, 334

Distributed fixed station systems radio systems, 673

Distribution networks

power system instability, 176 Div6bution pillars

portable substations, 417 District survey laboratories

nuclear power stations, 733 Disturbances

power systems

computer reliability analysis, 176 short-circuit

power systems, computer reliability analysis, 176 Documentation

electrical systems

quality assurance, 46 Dosing pumps

electrochlorination

electrical services, 834 Draft tube valves

pumped-storage plant protection, 913

Drain earth switchgear, 328

Draught plant

electric motors, 640 Drawings

electrical systems quality assurance, 46

Drax Completion cabling, 428

Drax power station

electrical auxiliaries system, 10 guaranteed instrument supplies system

station, 55 Drax power stations

guaranteed instrument supplies system unit. 54

Dual tone multi-frequency signalling. 683 Ducts

cable pulling, 520 cables

installation, 457,517 thermal resistance, 453

telephone cables construction sites, 741

Duplexers

coupling equipment antennas, 702

Dust

handling plant

electrical services, 842-851 Dust hoppers

mobile

electrical control. 848 Dust pumps

controls,. 851

Dynamic braking overcurrent pumped-storage plant protection. 906

Dynamic output voltage effects unintemmtable power supply systems. 63

Earth bars

generator connections, 302 Earth bond cables

sizes, 563 Earth cables

circular solid aluminium conductors, 535 installation. 562

Earth electrodes

buried horizontal strips. 556 resistance

measurement, 572 sizing, 552.556-562

Earth fault currents earthing systems

cables, 554 Earth faults

auxiliary generators protection, 923

auxiliary transformers protection, 921

cables, 461

generator stators. 886-891 generator transformer connections

protection. 905 generator transformers protection, 903

standby

unit transformers, protection, 903 Earth networks

construction, 562-567

control and instrumentation, 562 plant bonding, 562-567

Earth potential earthing systems

cables, 550 Earth resisuvity

measurement, 567-572 Earth rods

earth electrodes, 561

earth electrodes, 556 Earth strips

earth electrodes, 561 Earth systems

impedance. 572 Earthing

battery chargers. 769 control and instrumentation

cabling, 569 cranes, 817

DC circuits, 67 diesel generators testing, 795

electrostatic precipitators, 855 gas production plant, 824

generator main connections, 320-321 high resistance

generator stators, 887-891 lifts, 820

low impedance

generator stators, 886-887 maintenance

generator main connections, 321-323 power cabling, 570

switchboards

low voltage, 403 switchgear, 367

duty, 390 Earthing switches, 368

design, 351

generator main connections testing, 315

type testing, 339 Earthing systems

acceptance criteria cables, 551 cables, 550-574

design, 552-556 commissioning, 573 remote neutrals

cables, 552 resistance, 554 routine tests, 573

Earthquakes (see also Safe-shutdown earthquakes) cable support systems, 569

cranes

nuclear power stations, 817 diesel generators

protection, 778 Eddy current loss

transformers, 199 Effective radiated power

antennas, 685 Effluent pumps

water treatment plant power distribution. 840

Elbow terminations electric stress

II kV terminations, 540

Electric motors (see also AC commutator motors: Cage induction motors; Circulator main drive motors; Converter/inverter motors; DC motors; Induction motors; Linear motors; Slipring induction motors; Squirrel-cage induction motors; Synchronous motors), 623-648

415 V

parameters, fuse sizes, 617 protection, 940

3.3kV

earthing networks, 565

II

kpVlant bonding. 565 AC

electrical services, 802 auxiliary

protection, 925 auxiliary drives, 640-645 circuits

cables, 468 construction. 629-637 cranes, 807

DC, 803

cranes, nuclear power stations, 807 design, 629-637

design standards, 801 electrical auxiliaries systems, 7 electrical services, 801-806 fault currents

power systems, computer reliability analysis, 166 future trends. 645

gas production plant, 821 heating and ventilation. 861 large

electrical systems, 39 low voltage switchgear

capability, 391 performance, 623-629 protection

cranes, 807 ratings, 801 run- up

load flow results, 191 speed control, 39 start-up

load flow results, 191 starting

cables, 463

station electrical systems, load flow analysis. 138 starting current

cables, 463 starting times

cables, 464 supply voltages, 801

technical requirements, 637-640 testing, 645

types. 623-629

water treatment plant, 840 Electric stress

11 kV terminations

core insulation screen, 539 Electrical auxiliaries systems, 6-9

limitations, 38 transformers, 7-8

Electrical circuits design, 603

Electrical clearances switchgear

low voltage, 402 Electrical interlocks

circuit-breakers closure, 361

Electrical services

mechanical plant, 799-867 Electrical supplies

construction site equipment, 414-421

Electrical systems analysis, 84- 192

principles, 84-89 quality assurance, 89 techniques, 85

capital costs, 36 choice, 35-46 consequential costs, 37 descriptions, 4-29 design, 1-83 economics, 36

main generators, 4-5