Inspection and maintenance
Maintenance
78 U-PW powerway System Manual
06.01 Maintenance
Regular tests and maintenance
– The service life of a circuit breaker essentially depends on the operating conditions.
– Preventive maintenance and periodic inspections performed by competent, electrically skilled per-
sons with experience in testing are important in maintaining the performance of the circuit breaker.
– Risk of fire due to insufficient maintenance!
Inspection and maintenance intervals (recommended minimum specifications)
Annually after commissioning
Normal inspection
– Inspections
– Measurements
– Testing
– Cleaning
– Document
– Electrically skilled person with ap-
propriate testing experience
– Hager maintenance service (optional)
Every 6 months after 6 years
Normal inspection
– Inspections
– Measurements
– Testing
– Cleaning
– Document
– Electrically skilled person with ap-
propriate testing experience
– Hager maintenance service (optional)
Hager Service
In order to ensure its systems operate with a high degree of reliability, Hager offers a maintenance and
service concept implemented by qualified service technicians that conforms to standards. These ser-
vices include commissioning, conversion and maintenance.
Contact your local office about this.
Maintenance work on withdrawable hw+ circuit breaker under live conditions (-W)
A withdrawable circuit breaker can be switched to the "test" and "withdrawn" positions and removed
under voltage. Conversely, insertion and retraction under voltage are also possible.
Follow all safety rules for personal protection and equipment protection.
Only electrically skilled persons should perform maintenance work.
Provide an adequately sized lifting device.
Do not use force when withdrawing, removing, inserting and retracting equipment.
Switch the circuit breaker to the “OFF” position.
Follow the relevant instructions in section 8 of the installation manual.
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