Electrical Connection; Operation And Maintenance - COMEM BR 25 Bedienungsanleitung

In case of trip switching by the flow valve (increased fluid
speed) it is necessary to operate on the mechanical test
push button following the previous indication.
This operation is necessary to rearm the flow valve on the
normal working position.
DIAGRAM TYPE A
C
2 3 4
1
D
Alarm circuit
Trip circuit
Figure 1

Electrical connection

Remove the terminal box cover (1/C) unscrewing
the four M5 screws (1/D). Enter the wire through the
cable gland.
Connect the leads (terminal bolts M6, max torque 2 Nm)
following the electrical scheme reported on the label.
Figure 2
DIAGRAM TYPE L
1 2 C1 3 4 C2 A 1
Alarm circuit
Trip circuit Trip circuit
Connect the earth conductor to the ground screw M4 in
the terminal box (max torque: 5 Nm).
Re-close the terminal box: during this operation check the
gasket, the surface must be clean.
Diagram type CC
DIAGRAM TYPE P
2
C2 3 C1 4
B
Alarm circuit
Figure 3
Operation and
maintenance
Maintenance
During regular check of the transformer, we recommend
performing the following checks on the BR 25 for railway
application:
• Check the exterior condition of the device.
• Verify the switches functioning following the chapter 3.2
(Mechanical test)
• Check the gaskets condition and if any leakage exists.
Storage
The BR 25 storage has to be done in its packaging, in dry
place with temperature in the range -10°C ÷ +40°C.
Upon receiving the BR 25, please check:
• The outer surface of the packaging to check that it is
intact;
• That there are no breakages.
If damages are found, please contact COMEM, reporting
the data provided in the delivery note and the serial num-
ber of the BR 25.
DIAGRAM TYPE G
C2 2 C1
1 3 4
Alarm circuit
Trip circuit
5