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General| Brand | Westinghouse |
|---|---|
| Model | DB-50 |
| Category | Circuit breakers |
| Language | English |
Procedures for checking the breaker upon receipt and during storage.
Guidelines for storing circuit breakers to prevent damage.
Instructions for making electrical connections to the circuit breaker.
Description of the pole unit mounting and insulation.
Details on contact alignment, pressure, and maintenance.
Information on the breaker's operating mechanism and its function.
Explanation of the closing spring assembly and its operation.
Details on the closing solenoid's function and maintenance.
Steps for removing and installing the overcurrent tripping device.
Procedures for checking and adjusting overtravel.
Description of the overcurrent tripping device's components and assembly.
Details on the dual overcurrent series tripping device.
Information on the dual selective overcurrent tripping device.
Description of the instantaneous trip only device.
Explanation of the operation of the dual overcurrent series tripping device.
Procedure for adjusting the long delay pick-up setting.
Method for calibrating the long delay setting.
How to adjust the instantaneous pick-up setting.
Procedure for adjusting the short delay pick-up.
Calibration method for the short delay setting.
Description of the control relay, its mounting, and contacts.
Procedures for inspecting and maintaining the shunt trip attachment.
Details and operation of the undervoltage time delay attachment.
Function and calibration of the reverse current trip attachment.
Inspection and maintenance for the reverse current trip attachment.
Inspection and maintenance for the field discharge switch.
Inspection and maintenance of the auxiliary switch.
Inspection and maintenance of the alarm switch attachment.
Inspection and maintenance of the electric lockout attachment.
Inspection and maintenance of the key lock attachment.
Inspection and maintenance of the key interlock attachment.
Inspection and maintenance of the rectifier unit.
