Miyachi Amada ISQ20 Series, Руководство по эксплуатации

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ISQ20
Commissioning
76609605EN-ISQ20-V1.2.docx 39/63
5.2.3 Connecting Current Measurement
A current measuring coil must be integrated in the secondary circuit for all inverters with
external transformer (ISQ20-8, ISQ20-10, ISQ20-20).
(Standard: Toroidal ring coil ø 70 mm, no. 770.60 152).
The current measuring coil is part of the power control or oft he measuring unit (if used).
Always make sure that only the supply cable of the secondary current is enclosed by the
coil. The coil may never enclose both the supply and the return cable of the secondary
current
Attention
Abb. 9: Flap toroidal coil (example) with
(+) side marking Abb. 10: Ring toroidal coil (example)
with (+) side marking

Install the coil on the (+) line of the power source. Ensure that the (+) side of the
coil points in the direction of the (+)connection of the power source. Ensure that
all secondary cables of one pole are enclosed.

Connect the cable of current measurement with the coil and X32 on the ISQ20
(resp. when using an external measuring device with the corresponding input).
In order to ensure correct current indication the direction of current and, consequently,
the coil installation direction are important.
Ensure that the (+) side of the coil points to the direction of the (+) power source
connection.
Ensure that all secondary cables of one pole are enclosed.
Attention