The RFI switch connects the capacitors galvanically to earth.
1) Not required with 525-600/690 V drives; therefore not possible.
3.2.6. Torque
When tightening all electrical connections it is
very important to tighten with the correct tor-
que. Too low or to high torque result in a bad
electrical connection. Use a torque wrench to
ensure correct torque
Illustration 3.37: Always use a torque wrench to
tighten the bolts.
Enclosure
Terminal
Torque
Bolt size
D1 and D2
Mains
Motor
19 Nm (168 in-lbs)
M10
Load sharing
Brake
9.5 (84 in-lbs)
M8
E1
Mains
Motor
Load sharing
19 NM (168 in-lbs)
M10
Brake
9.5 (84 in-lbs)
M8
Table 3.4: Torque for terminals
3.2.7. Shielded Cables
It is important that shielded and armoured cables are connected in a proper way to ensure high
EMC immunity and low emissions. Connection can be made with either cable glands or clamps.
•
EMC cable glands: Generally available cable glands can be used to ensure an optimum
EMC connection.
•
EMC cable clamp: Clamps allowing easy connection are supplied with the frequency con-
verter.
3.2.8. Motor cable
The motor must be connected to terminals U/T1/96, V/T2/97, W/T3/98. Earth to terminal 99. All
types of three-phase asynchronous standard motors can be used with a frequency converter unit.
VLT
®
5000/6000/8000
High Power Installation Guide
3. Installation
MI.90.J2.02 - VLT
®
is a registered Danfoss trademark
31
3
