Commissioning; General Tests - Siemens SENTRON 3WL10 Series Manual

5.4

Commissioning

You can read how to operate the circuit breaker during each test point in Chapter Operation
(Page 151).
5.4.1

General tests

Electric shock!
Test the circuit breaker only while the switchboards are de-energized.
Note
General testing of the circuit breaker is necessary in the following cases:
• The circuit breaker is put into operation for the first time.
• The circuit breaker is inactive for a long time and during storage under certain
environmental conditions
The tests contain the procedures that must only ever be performed by electrically skilled persons.
Electrically skilled person (IEV 195-04-01): Person with relevant education and experience to
enable him or her to perceive risks and to avoid hazards which electricity can create.
The following table describes the general testing of the circuit breaker and its installed
environment:
Items to be tested
Switchboard
Connections
Operations
If present
1)
Air circuit breaker 3WL10
Manual, 11/2017, L1V30499596002-01
DANGER
1)
Checks
1. Sufficient ventilation to avoid overtemperatures
2. Clean installation location, free of all installation waste (e.g. cables,
tools, metal splinters)
3. Circuit breaker correctly mounted (tightening torques and ventilation
clearances observed)
4. The environmental conditions of the installation must match the
specifications (see Chapter Application planning (Page 107)).
1. Electrical connections at the terminals of the circuit breaker
tightened
2. Cables, busbars, and auxiliary current wiring have sufficient con-
ductor cross sections
3. Required insulation clearances between the phases (if necessary
with phase barriers) and from phases to the switchboard panel.
Perform a few open and close operations.
It must be possible to operate the lever of the operator normally and
to charge the spring energy store.
Note: If an undervoltage coil is present, the circuit breaker can only
be closed when a voltage is applied at the corresponding auxiliary
conductor terminals.
Connection and commissioning
5.4 Commissioning
145