Mitsubishi Electric Melsec Q Series User Manual page 88

7 Setting and procedure for operation
◆Connecting 5 A current sensor and extension cable (separate)
1)
2)
Supplementary -----------------------------------------------------------------------------------------------------------------------------
 Cable extension for EMU2-CT5 is 10 m max. (Total cable length is 11 m max.)
 Use extension cable (separate) when 1-phase and 3-phase are set apart.
7.5.3.2 Voltage circuit connection
 If a 440 V or higher circuit is used, use a transformer.
 The transformer which has primary voltage of VT less than 6600 V and secondary voltage of VT not
more than 220 V can be used. For connection to P1 to P3 terminals on QE81WH, connect the
secondary of transformer. Make sure that terminal symbols are correct.
 In order to perform maintenance work such as changing the wire layout and replacing equipment, we
recommend that you connect protective device (breaker) for the voltage input circuit (P1, P2, and P3
terminals).
7.5.3.3 FG terminal connection
 For the actual usage, connect the FG terminal to ground. (D-type ground: Type 3) Connect it directly to
the ground terminal.
 Do not connect to FG terminal during the insulation resistance test and pressure test.
EMU2-CT5(0.5 m)
EMU2-CB-T**MS(1 m to 10 m)
Breaker
P2
7 - 16
P1
P3
QE81WH
EMU2-CB-Q5A(0.5 m)