Emerson 400A - Manuals

INSTALLATION (continued) 1 --- 3 Functional Test The Functional Test consists of three checks: manual operation, voltage checks, and electrical operation. NOTICE Do these checks in the order presented to avoid damaging the automatic transfer switch. Read all instructions on the Wiring Diagram and la...

INSTALLATION (continued) 1 --- 4 observe these lights Figure 1–5. Standard controls and indicators. 2 – Voltage Checks First check nameplate on transfer switch; rated voltage must be the same as normal and emergency line voltages. Use extreme caution when using a meter to measure voltages in the fol...

INSTALLATION (continued) 1 --- 5 press this button observe these lights Figure 1–6. Standard controls and indicators. 3 – Electrical Operation This procedure will check the electrical operation of the Automatic Transfer Switch. Close the transfer switch enclosure door and tighten the screws before y...

Hold 15 sec. to start the engine generator and to transfer the load to emergency. Press to cancel the active exercise period (stops engine now or after cooldown) See page 5–1. Hold 5 sec. to set 20 min. engine exercise period immediately (engine starts) and weekly thereafter. ³ blinks slowly when bu...

SECTION 3 TESTING & SERVICE 3 --- 1 PREVENTIVE MAINTENANCE For high reliability and long life for the ATS: Operate the switch at least once a month . Perform this 4–step Electrical Operation Test (test with load transfer). Transfer Switch Test 1. Press and hold the door-mounted Transfer Test but...

TESTING & SERVICE (continued) 3 --- 2 MANUAL LOAD TRANSFER This procedure will manually transfer the load if the controller is disconnected. Do not manually operate the transfer switch until both power sources are disconnected: open both circuit breakers. 1. Open normal and emergency source circ...

SECTION 4 ADJUSTMENTS 4 --- 1 Time Delay Adjustment Standard time delays are set to customer specifications(if none specified, standard factory settings are used). To change a setting, follow procedure on page 4-2. UseTable 4-1 as a guide to time delay values and their cor-responding adjustment DIP ...

ADJUSTMENTS (continued) 4 --- 2 NOTICE Do not make any setting changes while the controller is energized. How to Change a Setting 1. Prevent the transfer switch from operating by discon- necting one source first, then the other, as follows: a. If the transfer switch is in the Normal position,open th...

SECTION 5 CONTROL FEATURES – ENGINE EXERCISERS 5 --- 1 These timers periodically exercise the emergency engine-generator plant. They can be set to exercise with or withoutload transfer, or they can be completely disabled. The engine-generator should be exercised under load once a week fora minimum t...

CONTROL FEATURES (continued) 5 --- 2 Optional Accessory 11BG – SOURCE AVAILABILITY SIGNAL & PROGRAMMABLE ENGINE EXERCISER MODULE 2–line display 3 buttons connections for source availability signal contacts Figure 5–2. Accessory 11BG module (mounted behind operator interface and connected to the ...

Fast/Slow Adjust Daylight Saving Time Adjust Date Time Start TIme Engine Exerciser Run TIme CONTROL FEATURES (continued) 5 --- 3 How to Set Optional Programmable Engine Exerciser (part of Acc. 11BG module) Hazardous voltage capable of causing shock, burns, or death is used in this transfer switch. D...

CONTROL FEATURES (continued) 5 --- 4 INPHASE MONITOR FOR MOTOR LOAD TRANSFER Inphase monitoring logic controls transfer andretransfer of motor loads, so that inrush currents do notexceed normal starting currents. It avoids nuisancetripping of circuit breakers and mechanical damage tomotor couplings....

CONTROL FEATURES (continued) 5 --- 5 OPTIONAL STRIP HEATER (Accessory 44) Accessory 44 Strip Heater is designed to keep ambienttemperatures within the Automatic Transfer Switchenclosure at acceptable levels. This accessory consistsof a mounting bracket with strip heater, thermostat, andterminal bloc...

INDEX Printed in U.S.A. Copyright --- ASCO Power Technologies, L.P. 2011 A accessories, 5–2, 5–5auxiliary circuits, 1–2 B battery, 4–2, 5–1buttons, push, 3–1bypass time delay, 1–5, 2–1, 3–1 C cable lugs, preparation, 1–1 catalog number, covercleaning, 3–1connections engine control contact, 1–2 line,...