MSDServoDrive AC-AC Operation Manual
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Id. no.:CA65642-001 Date:03/2012
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A.9 UL-approbation
A.9.1 Measures to comply with the UL-approbation
(UL 508C) Size1 to Size4
1. The devices must only be operated on networks of 1. overvoltage category III.
2. The devices can be used in networks with a maximum possible current of 5 kA
2. with phase symmetric current and a maximum voltage of 480 V with network
fusing acc. to table A.21.
3. The devices are designed for installation in 3. environments with pollution severity
2 acc. to EN 60664-1.
4. The integrated back-up fuse does not serve as protective device for branch
lines.The protective device for branch lines must be designed according to the
instructions of the manufacturer, the NEC regulations (National Electrical Code)
and other locally valid standards.
5. Only UL-qualified device connecting cables (mains, motor and control cables) must
be used:
− use copper cables with a temperature resistance of minimum +75 °C (+167 °F).
− Required tightening torques for the terminals: see table A.21.
6. Maximum ambient air temperature: see table A.16.
7. An isolated voltage supply with a nominal voltage of 24 V DC is to be used for the
relay output OSD04, the output from the supply is to be protected externally with
a 4 A fuse as per UL 248.
Size Device
Tightening torque
mains and
motor terminals
Tightening torque
control terminals
Mains fuse /
class
Size1
G392-004A 0.56 - 0.79Nm 0.56 - 0.79Nm 1x20A / K5
G392-004 0.56 - 0.79Nm 0.56 - 0.79Nm 3x10A / K5
G392-006 0.56 - 0.79Nm 0.56 - 0.79Nm 3x15A / K5
Size2
G392-008 0.56 - 0.79Nm 0.56 - 0.79Nm 3x20A / RK5
G392- 012 0.56 - 0.79Nm 0.56 - 0.79Nm 3x25A / RK5
Size3
G392-016
G395-016
1.7Nm 0.56 - 0.79Nm 3x30A / RK5
G392-020
G395-020
1.7Nm 0.56 - 0.79Nm 3x40A / RK5
Size4
G392-024
G395-024
1.7Nm 0.56 - 0.79Nm 3x50A / K5
G392-032
G395-032
1.7Nm 0.56 - 0.79Nm 3x60A / K5
Table A.21 Tightening torques and mains fuse Size1 to Size4