Eaton Cooper Power Series Operation And Installation Instructions Manual

Also see for COOPER POWER SERIES: Installation and operation instructions Installation instructions Installation instructions Installation and operation instructions Operation instructions

Contents

Eaton Cooper Power Series Operation And Installation Instructions Manual Manual pdf 12 page image

8TYPE VSA12,VSA12B,VSA16,VSA20,ANDVSA20A O P E R ATIONANDINSTALLATIONINSTRUCTIONS MN280063EN May 2017AccessoriesAuxiliary switchA one-, two-, three-, or four-stage auxiliary switch can beprovided as an accessory. Each stage has two independentcontacts that permit any desired combination of “a”(follow state of recloser contacts) and “b” (opposite stateof recloser contacts) positions. The switch is wired to aseparate terminal block as shown in Figure 5.The switch contacts are insulated for 600 V and have acontinuous current rating of 10 A. Their interrupting ratingsare shown in Table 7.table 7. auxiliary Switch interrupting ratingsVoltsInductiveAC (amps)Non-InductiveAC (amps)InductiveDC (amps)Non-InductiveDC (amps)24 – – 15.0 20.048 – – 7.5 10.0120 60 80 – –125 – – 1.5 2.0240 30 60 – –250 – – 0.45 0.5Current transformerswarNiNghazardous voltage. the equipment is shipped withthe shorting thumbscrews in the ct terminal blocks.these thumbscrews must not be removed until externalconnections are made to the terminal blocks. Energizingthe equipment with the shorting screws removed,and no load connected, will cause high voltage to begenerated in the ct secondaries. contact with highvoltage can cause severe personal injury or death andequipment damage. t208.2Multi-ratio bushing current transformers can also besupplied in either 600:5 or 1200:5 A ratios. Each multi-tapped CT secondary is wired to a separate six-pointterminal block in the operator mechanism cabinet (Figure 5).The available current ratios and terminal block terminationsare shown in Table 8.figure 6. Position of shorting thumbscrews.Figure 7 shows one of the three terminal blocks for themulti-ratio bushing CTs in the as-shipped condition. Thesecondary of each CT is shorted and grounded by thethumbscrew which shorts terminals X1 and X5 to thegrounding bar. After external connections are made, thethumbscrew at X1 is removed and stored in the corner ofthe terminal block. The other thumbscrew remains in thegrounding bar to make the common ground connection forone side of the CT secondary winding. The location of thescrew in the bar is dependent upon the CT ratio desired andis always the higher of the two terminal numbers. Typicalcustomer wiring to the three terminal blocks is shown inFigure 7.table 8. Multi-ratio current transformer ratios andterminal connections600:5 Ratio BCT 1200:5 Ratio BCT Terminal Connection600:5 1200:5 X1-X5500:5 100:5 X2-X5450:5 900:5 X3-X5400:5 800:5 X1-X4300:5 600:5 X2-X4250:5 500:5 X3-X4200:5 400:5 X4-X5150:5 300:5 X1-X3100:5 200:5 X1-X250:5 100:5 X2-X3GRD X5 X4 X3 X2 X1 GRD X5 X4 X3 X2 X1GRD X5 X4 X3 X2 X1 GRD X5 X4 X3 X2 X1 GRD X5 X4 X3 X2 X1GRD X5 X4 X3 X2 X1GroundShortingScrewsCommon Return Connections(Terminal X4 ground through shorting screws)PermanentlyWired to CTs Ground PermanentlyWired to CTsShortingScrewsIndividually Wired Connectionsfigure 7. Position-shorting thumbscrews in terminal block and customer wiring.