Power Electronics SD700SP Series, Руководство по аппаратному обеспечению и установке

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POWER ELECTRONICS SD700SP
POWER CONNECTION
33
EN
FRAME
I(A)
Rated
Power
(kW)
at400VAC
Recommended
Cable Section
per Phase
Recommended
Cable Section
for Earth Wire
AWG /
kcmil
mm²
AWG /
kcmil
mm²
6
330 160 2 x 350 2 x 185 2 x 350 2 x 185
370 200 2 x 500 2 x 240 2 x 500 2 x 240
460 250 2 x 500 2 x 240 2 x 500 2 x 240
575 315 3 x 500 2 x 240 3 x 500 2 x 240
7
580 315 3 x 500 2 x 240 3 x 500 2 x 240
650 355 3 x 500 3 x 240 3 x 500 3 x 240
720 400 4 x 500 3 x 240 4 x 500 3 x 240
835 450 4 x 500 4 x 240 4 x 500 4 x 240
8 840 450 4 x 500 4 x 240 4 x 500 4 x 240
Note: AC Cable must be suitable for a permanent Tª >75ºC. Use 600V cables for up to 500Vac rated
voltage. However, this is only a recommendation. You must follow the local regulations.
Ground connection
Before connecting the power conductors, be sure that the chassis of the drive and the adjoining cabinets
are connected to ground through the dedicated (PE) terminals. They are situated at both sides of the
bottom metallic walls of the drive and they are labelled with the appropriate ground connection. Check
section
“Power Terminals”.
Motor
’s chassis grounding must be connected to the drive. In other words, connect the motor’s ground
conductor
to the PE output terminal of the drive and not to the installation’s ground. We recommend that
the cross section of the
motor’s ground conductor (PE) should have at least the cross section of the
active conductor (U, V, W). Additionally, it should be installed following the recommendations indicated
in
section “Power Connection and wiring”.
When connecting the earth, ensure that all connected terminal lugs are securely tight and protected from
mechanical forces. The tightening torque in case of M10 PE terminals is 40Nm.
WARNING
In solar pumping installations the solar field must be with floating earth, without connecting any
pole to ground.
In hybrid solar pumping system, the diesel generator must be grounded for a TT configuration.
For other configurations consult with Power Electronics.
For safety reasons, it is determinant to measure the grounding resistance of the plant itself. This
must be established before the first start up of the plant and with the drive disconnected.
It is responsibility of the installer to provide the adequate number, type and cross section
grounding conductor
alongside with the characteristics of the drive used and of the Plant in order to
minimize the grounding resistance, that comply with the local and national regulation.