To Next PageTo Next PageWhat to do if cubicle door cannot be opened (door interlock as accessory) of Siemens UL 1066?
If the cubicle door (door interlock as accessory) cannot be opened, it might be because the closed Siemens circuit breaker is preventing it (open the circuit breaker). Another reason could be that the circuit breaker is in the connected position (rack the circuit breaker into the test or disconnected position).
What to do if Siemens UL 1066 cannot be closed but ready-to-close indicator shows?
If the Siemens circuit breaker cannot be closed, but the ready-to-close indicator is showing, it could be due to the closing coil not being energized or being incorrectly energized (check or apply the correct voltage). Another potential cause is the secondary disconnects having been removed (plug in the secondary disconnects).
How to fix racking handle if it cannot be drawn out of Siemens UL 1066 Circuit breakers?
If the racking handle of Siemens circuit breaker cannot be drawn out, it could be because the circuit breaker is closed (press the "OPEN" button and pull the racking handle block out). Alternatively, the cubicle door might not be completely closed (close the cubicle door).
How to fix racking handle if it cannot be pushed in Siemens UL 1066 Circuit breakers?
If the racking handle of Siemens circuit breaker cannot be pushed in, it is possible that the racking handle is interlocked. To resolve this, rack the circuit breaker into the disconnected, test, or connected position, unlatch the crank, and push it fully in.
What to do if Siemens Circuit breakers cannot be moved from the withdrawn position into the disconnected position?
If the Siemens circuit breaker cannot be moved from the withdrawn position into the disconnected position, ensure that the racking mechanism of the circuit breaker is in the disconnected (DISCON) position. Check the circuit breaker position indicator and rack the mechanism into the disconnected position (green position indicator).
Why Siemens UL 1066 cannot be fitted in the guide rails?
If the Siemens circuit breaker cannot be fitted in the guide rails, it's likely that the factory-mounted coding of the circuit breaker and cradle does not match. The circuit breaker is not rated for use in this cradle. Replace it with the proper circuit breaker; permissible circuit breakers are listed on the cradle type label.
What to do if Siemens UL 1066 Circuit breakers does not move during the first 6 rotations?
This is not a fault. Continue racking the Siemens circuit breaker.
General| Brand | Siemens |
|---|---|
| Model | UL 1066 |
| Category | Circuit breakers |
| Language | English |
Provides essential guidance for the safe operation of the circuit breaker.
Procedures for charging the closing spring and operating the breaker.
Circuit diagrams for shunt trip, undervoltage, and closing coil functions.
Detailed functions and overviews of ETU745, ETU748, and ETU776 trip units.
Explanation of protective functions like overload, short-circuit, and ground-fault.
Information and installation of ground-fault protection modules.
Procedure for replacing the trip unit and performing self-tests.
Overview of the CubicleBUS system architecture and internal/external modules.
Guide on using the handheld test device for trip unit verification.
Step-by-step guide for installing the motor operator.
Details on various key locks and their installation on breakers and cradles.
Comprehensive guide to padlock locking devices for OPEN state, shutter, and handles.
Steps for installing and adjusting the mechanical interlocking module and Bowden cables.
Steps to prepare for maintenance, including opening and discharging the breaker.
Checking contact erosion and replacing internal contact assemblies.
