Mitsubishi Electric Melsec Q Series User Manual page 86

7 Setting and procedure for operation
■ How to attach EMU-CT400/CT600
Follow the procedure below to attach the cable to the
target circuit.
1) Release the band 1) to the arrow direction (top), and
detach the core cover.
2) Remove the terminal cover, and shift the secondary
short switch into "short".
3) Loosen the screw 2), and open the core band to
remove the core. Make sure that no dust, etc attaches
on the core.
4) Loosen the screw 3). Put this module onto the cable,
and fix the module by tightening the screw 3) using
the metal bracket that is directly attached to the cable.
Tighten the screw as tightly as the metal bracket will
not bend.
5) Align the symbol of "K" on the removed core and the
"K" on the module to return the core as in the original
location. And then, tighten the core band using the screw 2).
6) Attach the core cover and fix it with the band 1).
7) Connect the secondary terminal with multiple-circuit power measuring module, turn the secondary short
switch into "open", and then attach the terminal cover.
Supplementary -----------------------------------------------------------------------
 Refer to the table below for appropriate size of electric wires.
Usable wires
size (reference)
Size of electric wires conforms to what is described in the catalog of general PVC insulated
wires. Thickness of external PVC insulation is different for different wire. Check with the external
dimension diagram of this product and make sure the wire can go through the given space.
■ How to attach EMU2-CT5
- Transfix EMU2-CT5 current sensor to the secondary-side wire of current transformer (/5A rated). Make sure to
use it in a correct combination with 5 A current sensor conversion cable: EMU2-CB-Q5A
- EMU2-CT5 has polarities. Make sure to connect to the right symbol on the terminal. Power source side: (k side),
load side: (l side).
EMU-CT400
1 wire
IV cable
500 mm
CV cable
5 A current sensor
EMU2-CT5
Core band
Cable-directly-
attached metal
bracket
3)
Primary
conductor
EMU-CT600
2 wire 1 wire
2 2 2
325 mm 500 mm
5 A current sensor cable
EMU2-CB-Q5A
7 - 14
QE81WH
1)
Core cover
2)
Core
Terminal cover
Secondary terminal
Secondary short-circuit
swi t ch
Primary current
2 wire
2
325 mm
To terminals of power
measurement module
QE81WH