Emerson 386 - Manuals - manualsarea.com

Page 3 - Supporting Foundation; Outline and Mounting Diagram; NOTICE; Insulator Backing Piece for 260 and 400 A; Be sure that the insulator piece is behind the 260; Controller Ground

SECTION 1 INSTALLATION 1 --- 1 ASCO 386 Non–Automatic Transfer Switches (N–ATSs) are factory wired and tested. Field installation simply requires mounting and connection of service cables, andauxiliary control circuits (if required). Remove the Shipping Skid (large N–ATSs) For large N–ATSs, open the...

Page 4 - INSTALLATION; Line Connections; Wiring Diagram; Testing Power Conductors; Table A. Tightening torque values for bolted joints.; Bolt Diameter

INSTALLATION (continued) 1 --- 2 Line Connections A Wiring Diagram is furnished with the ASCO 386 (separate from this manual). Refer to this drawing. Allwiring must be made in accordance with the National Electrical Code and local codes. De–energize the conductors before making any line or auxiliary...

Page 5 - – Manual Operation Test; for maintenance purposes only; – Voltage Checks; OPEN

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 non–automatic transfer switch. 1 – Manual Operation Test A detachable mainten...

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

INSTALLATION (continued) 1 --- 4 Functional Test (continued) 2 – Voltage Checks First check nameplate on the transfer switch for rated voltage. 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 to...

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; Checklist for Yearly Inspection; Hazardous voltage capable of causing shock,; REPLACEMENT PARTS; Disconnecting the Plugs

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; PROBLEM

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...

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 dropoutpoints are factory set as specified on the WiringDiagram. The frequency setting can be set for 50 or 60Hz.. To change this setting, follow the procedurebelow. Use Table 4-1 for 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 andretransfer of motor loads, so that inrush currents donot exceed normal starting currents. It avoids nuisancetripping of circuit breakers and mechanical damage tomotor couplings. The Motor Load Trans...

Page 12 - INDEX

INDEX Printed in U.S.A. Copyright --- ASCO Power Technologies, L.P. 2011 A auxiliary circuits, 1–1 B barriers, 1–2bus connections, 1–2 C cable lugs, 1–1, 1–2 preparation, 1–1, 1–2 catalog number, inside covercleaning, 3–1connections line, 1–2 controller, 4–1 code, inside cover cover removal, 4–1 dis...