WEG CFW700 User Manual - page 19

14 | CFW700

Installation and Connection

E

ng

lis

h

R/L1 S/L2 T/L3

DC-

DC+ U/T1 V/T2 W/T3

BR

Ground   

Ground   

(f) Frame size E with degree of protection IP55

Figure 3.1: (a) to (f) Power terminals and grounding points - frame sizes A to E

3.2.2 Power / Grounding Wiring and Fuses

ATTENTION!

Use proper cable lugs for the power and grounding connection cables.

Refer to 

Table B.1 on page 212

, 

Table B.2 on page 213

 and 

Table B.3 on page 214

 for the 

recommended wiring and fuses and 

Table B.5 on page 223

 for the specifications of the power 

terminals.

NOTE!

The gauges values presented in  

Table B.1 on page 212

, 

Table B.2 on page 213

and 

Table B.3 on page 214

 are for reference only. Installation conditions and the 

maximum permitted voltage drop shall be considered for the proper wiring sizing.

Input fuses

 The fuses to be used at the input must be HS (High-Speed) type with I

2

t equal or lower the 

value indicated in the  

Table B.1 on page 212

, 

Table B.2 on page 213

and 

Table B.3 on 

page 214

 (consider extinction current value in cold situation (it is not the fusion value)), to 

protect the inverter diode rectifiers and input wiring.

 In order to meet UL requirements, use class J fuses at the inverter supply with a current not 

higher than the values presented in 

Table B.1 on page 212

, 

Table B.2 on page 213

 and 

Table B.3 on page 214

.