Weq CTW900, Руководство пользователя

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Installation and Connection
44 | CTW900
V
line
= line voltage of the supply line, in Volts (V);
F
line
= frequency of the supply line, in Hertz (Hz);
I
rated
= rated current of the drive on the DC side, in Amps (A).
For 60Hz lines and voltages up to 500Vac, the recommended reactances for each model of the CTW900 are
presented in Table 5.6. For other voltages or frequencies, contact WEG to check the most suitable reactance.
Table 5.6 – Recommended Reactances for Supply Lines up to 500 Vac and Frequency of 60Hz
Reactance
CTW900
Model
Power Supply
Inductance /
Rated Current
WEG
Code
20A
200 to 500Vac
1.685 µH @ 16 A 10411609
50A 783 µH @ 41 A 11807983
90A 385 µH @ 70 A 10050123
125A 257 µH @ 105 A 10050125
180A 141 µH @ 157 A 11807950
260A 128 µH @ 211 A 10049790
480A 69 µH @ 390 A 10702984
640A 52 µH @ 515 A 10049792
1000A 52 µH @ 811 A 10109920
1500A 33 µH @ 1217 A 10254803
2000A 25 µH @ 1622 A 10557994
5.3.6 Grounding Connection
The CTW900 must be connected to a protection grounding (PE).
In order to do so, observe the following:
■
use a minimum wire gauge equal to the indicated in Table 5.1. If local standards require different gauges,
they must be observed;
■
connect the converter grounding point to a specific ground rod, or to the exclusive or general grounding
point of the installation (resistance
The supply lines allowed for use with the CTW900 are those of the TN or TT (IEC) type.
The connection of lines of the IT type is also possible, since it is grounded via impedance.
ATTENTION!
The neutral conductor of the line that feeds the converter must be solidly grounded; however, it
must not be used to ground the product.
DANGER!
Do not share the grounding wiring with other equipment that operate at high currents (e.g., high
power motors, welding machines, etc.). When several converters are used, follow the procedure
shown in Figure 5.8 for the grounding connection.
NOTE!
The frame of the motor driven by the CTW900 must always be grounded. The motor must be
grounded in the panel where the converter is installed, or on the converter itself.
NOTE!
When the electromagnetic interference generated by the converter is an issue for the other
equipment, use shielded wires or wires protected by metal conduit for the output connection of
the product (A1/B2), connecting the shield at each end to the grounding point of the converter and
to the motor frame.