Emerson 381333230 - Manuals

Page 2 - Catalog Number Identification; WARNING

Catalog Number Identification Typical ASCO 386 catalog no. for solid neutral, 3 pole, 150 amp, 480 V, N–ATS in Type 1 enclosure: D 386 A 3 150 N 1 C Phase Poles Neutral A – solid C – overlapping Amperes Voltage Controller Enclosure B – switched 1 – standard G – type 4 C – type 1 F – type 3R L – type...

Page 5 - Do these checks in the order presented to avoid; – Manual Operation Test; Do not manually operate the transfer switch; After deenergizing both power sources, open the; – Voltage Checks; ALL POWER OFF; Figure 1–2. Maintenance handle and positions.

INSTALLATION (continued) 1 --- 2 Functional Test The Functional Test consists of three checks: manualoperation, voltage checks, and electrical operation. Do these checks in the order presented to avoid damaging the non–automatic transfer switch. Read all instructions on the Wiring Diagram and labels...

Page 6 - Use extreme caution when using a meter; – Electrical Operation; Close the transfer switch enclosure door; Transfer Test; Transfer Control

INSTALLATION (continued) 1 --- 3 Functional Test (continued) 2 – Voltage Checks First check nameplate on the transfer switch for ratedvoltage. It should be the same as the normal andemergency line voltages. Use extreme caution when using a meter to measure voltages in the following steps. Do not tou...

Page 7 - Controller Code 1; Section 5, Optional Accessories; for additional control functions.; Refer to; Transfer To Emergency; Note

SECTION 2 SEQUENCE OF OPERATION 2 --- 1 Controller Code 1 Refer to Section 5, Optional Accessories for additional control functions. Refer to Wiring Diagram furnished with the ASCO 386. Note Control Features furnished on this switch, and review operation. Transfer Control Transfer To Normal Transfer...

Page 8 - SECTION 3; PREVENTIVE MAINTENANCE

SECTION 3 TESTING & SERVICE 3 --- 1 PREVENTIVE MAINTENANCE Reasonable care in preventive maintenance will insure high reliability and long life for the switch. An annual preventive maintenance program is recommended. ASCO Services, Inc. (ASI) is ASCO Power Technologies’s national service organiz...

Page 9 - MANUAL LOAD TRANSFER; Section 1; Manual Operation; Section 5

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. 1. Open normal and emergency source circuit breakers.2. Use manual h...

Page 10 - SECTION 4 ADJUSTMENTS; Sensor Adjustments; How to Change a Setting

SECTION 4 ADJUSTMENTS 4 --- 1 Sensor Adjustments Voltage and frequency sensor pickup and dropout pointsare factory set as specified on the Wiring Diagram. Thefrequency setting can be set for 50 or 60 Hz.. To changethis setting, follow the procedure below. Use Table 4-1for the setting and correspondi...

Page 11 - SECTION 5 OPTIONAL FEATURES; MOTOR LOAD TRANSFER; LOAD DISCONNECT FEATURE

SECTION 5 OPTIONAL FEATURES 5 --- 1 MOTOR LOAD TRANSFER Inphase monitoring logic controls transfer and retransferof motor loads, so that inrush currents do not exceednormal starting currents. It avoids nuisance tripping ofcircuit breakers and mechanical damage to motorcouplings. The Motor Load Trans...

Page 12 - INDEX

INDEX Printed in U.S.A. Copyright --- ASCO Power Technologies, L.P. 2007 A auxiliary circuits, 1–2 B barriers, 1–2 C cable lugs, 1–1 preparation, 1–1 spacers, 1–1 illustration of, 1–1 catalog number, inside covercleaning, 3–1connections line, 1–1 controller cover removal, 4–1 disconnecting, 3–1 D DI...