User manual

LCX9000 Liquid-Cooled Drives User Manual

2-28 For more information visit: www.eaton.com

MN04005001E

September 2007

2. Connection of cables:

Types CHK0023N6A0, CHK0038N6A0, CHK0062N6A0 (chokes with terminal blocks)

The terminals are marked with letters U, V, W and X, Y and Z such that terminals U and

X, V and Y as well as W and Z form pairs of which one is an input and the other an

output. Furthermore, terminals U, V and W must all be used as either input or output.

The same applies to terminals X, Y and Z. See Figure 2-24.

Example: If you connect the mains cable of one phase to terminal X, the other two

phases must be connected to Y and Z. Accordingly, the choke output cables are

connected to their corresponding input pairs: phase 1 ➔ U, phase 2 ➔ V and

phase 3 ➔ W.

Other types (chokes with busbar connection)

Connect the mains cables to the upper busbar connectors (see Figures 2-25 and 2-26)

with bolts. The cables to the drive are bolted to the lower connectors. See Table 2-18 for

bolt sizes.

Inverter Charging Circuit

The charging circuit of LCX9000 Liquid-Cooled inverters can be controlled with a contactor

and a charging resistor.

Table 2-19: Resistor Used for Charging Circuits

Figure 2-27: Charging Circuit

Control with Contactor

When the inverter charging circuit is controlled with a contactor, an auxiliary voltage

transformer must be used. Note local conditions of the supply voltage.

Type Nominal Rating T=350°; @25°C Max Voltage Resistance, ±10%

Danothrm ZRF 30/165 165W 1200V 33Ω