Connecting The External 5 V Power Supply For Series 2 Or Older Meters - Landis+Gyr E65C Series User Manual

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4.4.7

Connecting the external 5 V power supply for series 2 or older meters

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© Landis+Gyr
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.
Landis+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
M circuit < 110 V
M circuit > 110 V
F circuit > 110 V
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.
Terminal 1
Phase (5)
Phase (8)
Phase (5)
D000043188 en d – E65C – CU-P40, P41, P42 – User Manual
Installation/De-installation
Terminal 2
Phase (8)
Neutral (11)
Phase (8)