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Emerson 7ADTB - page 1
381333–309 50 Hanove r Road, F lorham Park, New J ersey 07932–1591 USA For sales or service call 1 800 800–2726 (A SCO ) www.ascopower .com AS CO PO WER TECH NO LOGI E S CA NA DA PO Box 1238, 17 Airport R oad, Brantf ord, O ntario, Can ada N 3T 5T3 telephone 519 758– 8450, f ax 519 758– 0876, f or service ca ll 1 888 234–2726 (A SCO ) w ...
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Emerson 7ADTB - page 2
Namepl ate The T ransfer Sw itch nam eplate inc ludes d ata for each specifi c 7000 Series ADTB . Use the swi tch only wit hin t he lim its shown on this namep late. A typ ical Catalog N umb er is sho wn be low w ith its ele ments e xplain ed. Ca talog Num ber Identif ication T ypi cal 7000 Series ADTB catalog no. for overlapping neutral, 3 pole, 6 ...
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Emerson 7ADTB - page 3
SECT ION 1 INST ALLA TION 1 --- 1 A SCO 7000 Se r i es A ut om a t i c De l a y e d – T r a n s i t i o n T ransf er & B ypass–Isolati on Switches (7ADTBs) are factory wired an d tested. Fiel d installation requires mounting a nd connecti on of service cables, and a uxi liary co ntro l circ uits (if requ ired) . Remove th e Shipping S kid O ...
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Emerson 7ADTB - page 4
INST ALLA TION (cont inued) 1 --- 2 Engine Starting Contacts All c ustomer connections, including the engine control contact connecti ons, are located on termina l block TB which is mounted on the top ri ght side of the enclosure. R efer t o t he wiring di agram provi ded with the aut omatic transfe r switch and connect the engine start wires to th ...
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Emerson 7ADTB - page 5
INST ALLATIO N (continued) 1 --- 3 RED RED GREEN GREEN obse rve these li ghts AMBER Figure 1- 2. Standard contro ls and indi cators. F unctio nal T e st R ead all instruc tions on the W iring D iagrams and label s affixed to th e 7ADTB. Note the con trol features that ar e provided and r eview their operation before pr oceeding. After insta lling t ...
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Emerson 7ADTB - page 6
INST ALLA TION (cont inued) 1 --- 4 RED RED GREEN GREEN obse rve these li ghts AMBER oper at e this s w itch Figure 1- 3. Standard controls and indi cators. 2 – Electrica l Opera tion Th i s pro ced ur e che cks e le ctr i cal op er at i on o f th e AD T S. Close e nclosu re door befor e proce edin g to prev ent pe rso na l inju ry in cas e of e ...
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Emerson 7ADTB - page 7
SECT ION 2 TEST ING & SERVIC E 2- -1 TRANS FER TEST T e st the A utomatic T ransf er Switch porti on of the 7000 Series 7ADTB at lea st once a month. T his procedure chec ks the el ectrical operation of the T ransfer Switch and Controller. Put the engine–generator st arti ng control (a t the engine –generator set ) in a utomatic mode. In th ...
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Emerson 7ADTB - page 8
TEST ING & SERVIC E (continued) 2- -2 TR OUBL E -SHOOTING Note any opti onal accessories that may b e furni shed on the 7ADTB an d review their op eration. R efer to any separ ate drawing s and/ or instr uctions that m ay be packed with th e 7ADTB. See T abl e B. Haz ardous v oltage ca pable of causi ng shoc k, burns, or death is used in this s ...
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Emerson 7ADTB - page 9
TEST ING & SERVIC E (continued) 2- -3 handle shaft exte nsion frame UP ope ns the Emergency s ou rce contacts DOWN cl oses the Emergency s ou rce contacts UPPER SHAFT Figure 2–2. Maintenance handle operatio n fo r Emergency source contacts (upper shaft). handle shaft exter nsion frame UP cl oses the Normal source contacts DOWN ope ns the Norm ...
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Emerson 7ADTB - page 10
SECTION 3 B YP ASS ING & ISOLA TING 3 --- 1 Figure 3–1. Status li ghts and Engine Control . TR ANSF ER SWI TCH CONNECT ED TO NORMA L CO N NEC TED T O EM ERGEN C Y Lower red l ight is on if T r ans fer Sw itc h is on Emergency . Upper green light i s on if T r ans fer Swit ch is on Norma l. Figure 3–2. Status li ghts for T ransfer Switch mai ...
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Emerson 7ADTB - page 11
B YP AS S ING & ISOLA TING (continued) 3 --- 2 T o By pass No rma l S our ce* T o By pass E merg ency So urce* (Loa d connected to Normal Source) The T rans fer Switch Connected T o Norm al li ght i s o n and T rans fer Switch Conn ected T o Emergency ligh t i s off. (Load connec ted to Emerg ency Sour ce) The T ransfer Swit ch Connec ted T o E ...
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Emerson 7ADTB - page 12
B YP AS S ING & ISOLA TING (continued) 3 --- 3 ISOLATING THE A TS Isolating is required before any service work can be perform ed on the automatic transfer sw itch (A TS). R efer to Figures 3–9, 3–10, 3–11, and 3–12. 1. Bypass t he closed automatic trans fer switch c ontacts . See BY PAS S I N G on pages 3–1 and 3–2. 2. T urn the Is ...
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Emerson 7ADTB - page 13
B YP AS S ING & ISOLA TING (continued) 3 --- 4 4. Open the low er encl osure d oor. Pul l out both left and right side rai ls then use the two tab handles to roll out the transfer switch. It can be safe ly inspected in thi s positi on. The t ransfer swi tch can also be re moved for easi er maintena nce operati ons. See Figure 3–13. Haz ardous ...
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Emerson 7ADTB - page 14
B YP AS S ING & ISOLA TING (continued) 3 --- 5 RETURN TO SERVI CE This proc edur e expla ins how to return the automatic tr an sf er s wi tch ( A TS) t o s er vi ce a ft e r i nsp ect i o n and maintena nce. Observe the Byp ass Swi tch P osition in dica - tor and lig hts). 1. Use the two tab handles to roll the tra nsfer switch into the en clo ...
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Emerson 7ADTB - page 15
B YP AS S ING & ISOLA TING (continued) 3 --- 6 Do no t close the isola tion contacts unless the T ra nsf er S witch ( A TS ) a nd By pa ss Switch a re in t he same po siti on! 6. When the tr ansfer sw itch is in the sam e positi on as the Bypass Switc h handle, cont inue turning the Isol ation Hand le cl ockw ise (abo ut 8 tu rns) u ntil the wi ...
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Emerson 7ADTB - page 16
B YP AS S ING & ISOLA TING (continued) 3 --- 7 RETURN TO SERVI CE cont inued* This proc edure exp lains how to return th e Bypass S witch Hand le to the OPE N position. The Bypass Handl e mu st be i n the CL OSED positi on (yellow indicator on NOR - MAL or EMERGENCY ) and the Is olation Handl e mus t be i n the CONN posi ti on (window). See Fig ...
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Emerson 7ADTB - page 17
INDEX Printed in U .S.A . Copy right 2007 ASCO Power T echnologies, L.P . A auxil iary cir cuits , 1–2 B barriers, i nterpha se, 3–4, 3–5 bypassing the A T S, 3–1, 3–2 C catalog number, 1–1 cleaning, 2–1 connections power, 1–1 contact inspection, 3–4, 3–5 cont ro lle r disconnecting, 2–1 see Controller Us er’s Gu ide D delay ...
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