Westinghouse Switch manual


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- informations concerning technical data of Westinghouse Switch
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- rules of operation, control and maintenance of the Westinghouse Switch item
- safety signs and mark certificates which confirm compatibility with appropriate standards

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Table of contents for the manual

  • Page 1

    Instruction Leaflet 30-470 (E) Page 1 Westinghouse Canada Switchgear and Control Division October , 1979 Supersedes issue dated October , 1975 Instruction Leaflet 30-470 (E) Pages 1-12 Automatic T ransfer Switches Index Warranty ......................................... 2 Westinghouse Offices ..................... 3 General Description ............[...]

  • Page 2

    Instruction Leaflet 30-470 (E) Page 2 Warranty The Company warrants the apparatus to be supplied hereunder to be of the kind designated or specified. The Company shall repair or replace any defective part or parts, f.o.b. the Companys factory , repair shop or warehouse, which prove to be defective under normal and proper use within one year from[...]

  • Page 3

    Instruction Leaflet 30-470 (E) Page 3 Westinghouse industrial products, and a complete line of electrical construction products, are distributed across Canada by WESCO (Westinghouse Sales & Distribution Company). For product application, delivery or pricing information call the WESCO office near you. WESCO Sales Offices Abbotsford 859-31 1 1 34[...]

  • Page 4

    Instruction Leaflet 30-470 (E) Page 4 General Description CSA Standard C22.2 No. 178-1978 defines an automatic transfer switch as, self acting equipment for transferring one or more load conductor connections from one power source to another . Transfer switch type A means an automatic transfer switch that does not employ integral overcu[...]

  • Page 5

    Instruction Leaflet 30-470 (E) Page 5 T ype LRO Robonic Automatic Transfer Switch Rated 30 amperes through 100 amperes at 600 volts Ac maximum 50 or 60 Hertz. The mechanism is a lever operated device controlled by a 120 volt unidirectional motor. The transfer motor drives a nylon cam which in turn operates a steel lever by sliding a pin along a slo[...]

  • Page 6

    Instruction Leaflet 30-470 (E) Page 6 T ype RO Robonic Automatic Transfer Switch A complete line rated from 150 amperes through 1000 amperes at 600 volts Ac or at 250 volts Dc. The transfer mechanism consists of the transfer motor , a gear train and two breaker operating cams. Spur Gear Meshing Relationship ( bottom view of top cover) The tra[...]

  • Page 7

    Instruction Leaflet 30-470 (E) Page 7 T able 1  Interrupting, Closing and Withstand Rating  Robonic T ype A Robonic Continuous rms symmetrical amperes Rating 600 Vac 480 Vac 120,208,240 Vac 30 to 100 amps 14,00 0 14, 000 18, 000 150 to 1000 amps 22,00 0 30, 000 42, 000 1200 to 3000 amps 100,000 100,000 125,000 Since type A Robonics employ mag[...]

  • Page 8

    Instruction Leaflet 30-470 (E) Page 8 Automatic Control ( Continued ) When adjustable type voltage sensors have been ordered, they are factory set to dropout at 90 volts and pickup at 108 volts Ac. For adjustment to other settings, first set the drop value and adjust the pickup to desired setting. This is done by using a variable power supply for t[...]

  • Page 9

    Instruction Leaflet 30-470 (E) Page 9 Solid State T ype Ratings  1. 2 wat ts power consumption Input Coil V oltage  120 volts at 50/60 Hertz Contact Rating  10 amperes resistive at 120 volts Time Range  2 to 3 seconds  nonadjustable Operating T emperature Range  -10°C to +55°C Description This is an octal plug-in relay containin[...]

  • Page 10

    Instruction Leaflet 30-470 (E) Page 10 Plant Exerciser (as used in Robonic T ransfer Switches) Ratings  Input voltage 120 volts Contact rating 20 amps at 120 volts resistive S.P .D.T . Description Dial A is divided into a 24 hour day and night scale, and has tabs around the periphery which may be adjusted to operate the micro switch within inter[...]

  • Page 11

    Instruction Leaflet 30-470 (E) Page 11 Replacing Parts The Robonic Automatic Transfer Switch has been designed to have all components accessible and readily removable from the front of the panels. The Robonic Transfer Switch is divided into two basic sections. The upper section consists of the main contacts and transfer mechanism, the lower section[...]

  • Page 12

    Instruction Leaflet 30-470 (E) Page 12 T rouble Shooting Guide Symptoms  refusal to re-transfer to normal source upon restoration  will not transfer to emergency source upon failure of normal source  transfer without a power failure in the normal source  no time delay when there should be  engine-generator starts when the normal sour[...]