OPERATION INSTRUCTIONS DANFOSS ENG

8.7 Connection Tightening Torques
Power [kW] Torque (in-lb [Nm])
Enclo-
sure
200–240 V 380–480/500 V 525–600 V 525–690 V
Line
power
Motor
DC
connection
Brake Ground Relay
A2 1.1–2.2 1.1–4.0 0.6 0.6 0.6 1.8 3 0.6
A3 3.0–3.7 5.5–7.5 1.1–7.5 1.1–7.5 0.6 0.6 0.6 1.8 3 0.6
A4 1.1–2.2 1.1–4.0 0.6 0.6 0.6 1.8 3 0.6
A5 1.1–3.7 1.1–7.5 1.1–7.5 0.6 0.6 0.6 1.8 3 0.6
B1 5.5–11 11–18 11–18 1.8 1.8 1.5 1.5 3 0.6
B2 15 22–30 22–30 11–30 4.5 4.5 3.7 3.7 3 0.6
B3 5.5–11 11–18 11–18 1.8 1.8 1.8 1.8 3 0.6
B4 15–18 22–37 22–37 11–37 4.5 4.5 4.5 4.5 3 0.6
C1 18–30 37–55 37–55 10 10 10 10 3 0.6
C2 37–45 75–90 75–90 37–90
14/24
1)
14/24
1)
14 14 3 0.6
C3 22–30 45–55 45–55 45–55 10 10 10 10 3 0.6
C4 37–45 75–90 75–90
14/24
1)
14/24
1)
14 14 3 0.6
Table 8.11 Tightening of Terminals
1) For different cable dimensions x/y, where x ≤ 4/0 AWG [95 mm
2
] and y ≥ 4/0 AWG [95 mm
2
].
8.8 Fuses and Circuit Breakers
Use recommended fuses and/or circuit breakers on the supply side as protection in case of component breakdown inside
the adjustable frequency drive (first fault).
NOTICE!
Use of fuses on the supply side is mandatory for IEC 60364 (CE) and NEC 2009 (UL) compliant installations.
Recommendations
•
Fuses of the type gG.
•
Circuit breakers of Moeller types. For other circuit breaker types, ensure that the energy into the adjustable
frequency drive is equal to or lower than the energy provided by Moeller types.
Use of recommended fuses and circuit breakers ensures possible damage to the adjustable frequency drive is limited to
damages inside the unit. For further information, see Application Note Fuses and Circuit Breakers, MN90T.
The fuses below are suitable for use on a circuit capable of delivering 100,000 A
rms
(symmetrical), depending on the
adjustable frequency drive voltage rating. With the proper fusing the adjustable frequency drive Short Circuit Current Rating
(SCCR) is 100,000 A
rms
.
Specifications Instruction Manual
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