Short Circuit Current Rating (Sccr); Connection Tightening Torques - Danfoss VLT FC 103 Operating Instructions Manual

Specifications
For UL compliance, for units supplied without a contactor-
only option, the Bussmann 170M series fuses must be
used.

10.3.3 Short Circuit Current Rating (SCCR)

The Short Circuit Current Rating (SCCR) of the frequency
converters is 100,000 amps at all voltages (380–690 V).
If the frequency converter is supplied with a mains
disconnect, the SCCR of the frequency converter is 100,000
amps at all voltages (380–690 V).

10.3.4 Connection Tightening Torques

When tightening all electrical connections it is very
important to tighten with the correct torque. Too low or
too high torque results in a bad electrical connection. Use
a torque wrench to ensure correct torque. Always use a
torque wrench to tighten the bolts.
F F rame Size Terminal
D1h/D3h/D5h/ Mains
D6h Motor
Load sharing
Regen
Earth (Ground)
Brake
D2h/D4h/D7h/ Mains
D8h Motor
Regen
Load sharing
Earth (ground)
Brake
Table 10.8 Torque for Terminals
inverter.ru (812) 702-47-50
VLT Refrigeration Drive Operating Instructions
Torque Bolt size
19-40 Nm
(168-354 in- M10
lbs)
8.5-20.5 Nm
M8
(75-181 in-lbs)
19-40 Nm
(168-354 in- M10
lbs)
8.5-20.5 Nm
M8
(75-181 in-lbs)
MG16J102 - VLT is a registered Danfoss trademark
10 10
75