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Installation/De-installation
© Gyr
D000043188 en d
– E65C – CU-P40, P41, P42 – User Manual
4.4.7
Connecting the external 5 V power supply for series 2 or older meters
External 5 V supply is not normally required
To ensure reliable modem operation, the use of an external 5 V power
supply is recommended for E650 meters in the following cases:
The meter is connected to less than three phases,
The supply voltage phase
– phase is < 173 V,
The supply voltage phase
– neutral is < 100 V, or
The meter has an auxiliary power supply.
Gyr supplies a special terminal cover with integrated 5 V supply
and the required connecting cables.
Use the following voltage output terminals for connecting the power supply
(the terminals are numbered as shown on the connection diagram):
Type of circuit
Mains voltage
Terminal 1
Terminal 2
M circuit
< 110 V
Phase (5)
Phase (8)
M circuit
> 110 V
Phase (8)
Neutral (11)
F circuit
> 110 V
Phase (5)
Phase (8)
Connect the external 5 V power supply of the CU-P4x as follows:
1.
Insert the two pins of the 230 V input cable as follows into the screw-
less spring-loaded terminals according to the table above. Connection
to screwless spring-loaded terminals is described in section 4.4.4.
Fig. 4.11
Connecting the 5 V power supply in the terminal cover
2.
Insert the plug of the 230 V input cable in the corresponding socket of
the 5 V supply in the terminal cover (the 230 V input socket is slightly
wider than the 5 V output socket)
3.
Insert the plug of the 5 V output cable in the corresponding socket of
the 5 V supply in the terminal cover (the 5 V output socket is slightly
narrower than the 230 V input socket).
4.
Insert the second plug of the 5 V output cable in the CU-P4x socket.
