Emerson 7ADTB Manuel de l'opérateur Page 1

381333–140 D50 Hanover Road, Florham Park, New Jersey 07932–1591 USAFor sales or service call 1 800 800–2726 (ASCO) www.ascopower.comASCO POWER TECHNO

TESTING & SERVICE(continued)2-- 2TROUBLE-SHOOTINGNote any opt ional accessories that may be furnished onthe ADTB and review their operation. Refer

SECTION 3 BYPASSING & ISOLATING3 --- 1BYPASSING THE ATS*This procedure explains how to Bypass the closedautomatic transfer switch contacts. Bypass

BYPASSING & ISOLATING(continued)3 --- 2ISOLATING THE AT SIsolating is required before any service work can beperformed on the automatic transfer s

BYPASSING & ISOLATING(continued)3 --- 3left support legright support leglocking pinwith clevis pinlocking pinwith clevis pinadjust length to touch

BYPASSING & ISOLATING(continued)3 --- 4RETURN TO SERVICEThis procedure explains how to return the automatictransfer switch (ATS) to service after

BYPASSING & ISOLATING(continued)3 --- 5RETURN TO SERVICE continued*This proc edu r e explain s how to retur n the Bypass Switc hHandletotheOPENpos

INDEXPrinted in U.S.A. Copyright ASCO Power Technologies, L.P. 2009Aauxiliary circuits, 1–2Bbus connections, 1–2bypassing the ATS, 3–1Ccatalog number,

Catalog Number IdentificationTypical 7000 Series ADTB catalog no. for overlappingneutral, 3 pole, 4000 amp., 480 V, in Type 1 enclosure:G7ADTB C 3 400

SECTION 1 INSTALLATION1 --- 1The ASCO 7000 Series Automatic Delayed–TransitionTra nsfer & Bypass–Isolati on S witch (ADTB) consistsof an upper byp

INSTALLATION (continued)1 --- 2De–energize the conductors before making anyline or auxiliary circuitry connections. Be surethat Normal and Emergency l

INSTALLATION(continued)1 --- 3REDREDGREENGREENobservethese lightsAMBERFigure 1-3. Standard controls and indicators.Functional TestRead all instruction

INSTALLATION (continued)1 --- 4REDREDGREENGREENobservethese lightsAMBERoperatethis switchFigure 1-4. Standard controls and indicators.2 – Electrical O

SECTION 2 TESTING & SERVICE2-- 1TRANSFER TESTTest the Automatic Delayed–Transition Transfer Switchportion of the 7000 Series ADTB at least once am