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3.4.5
Wiring Ports
Please select the most suitable standard of wiring
procedure for the wiring ports by customer's own.
A : Using the Waterproof Gland
IMPORTANT
To prevent water or condensate from entering
the converter housing, waterproof glands are
recommended. Do not over-tighten the glands or
damage to the cables may result. Tightness of
the gland can be checked by confirming that the
cable is held firmly in place.
Waterproof gland
Optional code : /ECG
Gasket
Tightening
gland
Waterproof gland
Optional code : /ECW
Gasket
Tightening
gland G3/4
Figure 3.4.6
Waterproof Gland
Waterproof gland with union joint
Optional code : /ECU
G1/2 female
Gasket
Tightening gland
G1/2 female
G1/2 female
F030406.EPS
B : Insulation Check
After wiring is completed, check insulation of the
following terminals together with the wiring under the
condition of the converter side wiring terminals
disconnected.
Between terminal EX1 and terminal A, B, C
Between terminal C and terminal A, B
Between terminal A and terminal B
Between terminal EX1 and ground
Between terminal EX2 and ground
All insulation measurements must be performed with a
500V megger. Insulation resistances must be 100MΩ
or more each.
IMPORTANT
Be sure to disconnect the cables at the terminal
of the converter when checking insulation.
C : Conduit Wiring
In case of conduit wiring, please use the waterproof
gland to prevent water flowing through the conduit
pipe into the wiring connection.
Please slope the conduit pipe down, and install a drain
valve at the low end of the vertical pipe.
Please open the drain valve regularly.
Drain valve
Figure 3.4.7
Conduit Wiring
3-18
3. INSTALLATION
F030407.EPS
IM 1E6D0-01E
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