Vacon NX User Manual

Non-regenerative front end vacon • 185
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
11
Figure 105. Example of FLU-CHK-1030-6-DL choke
Coolant connection G3/8” female thread.
11.9 Non-regenerative front end - fuse selection
AC fuses are used to protect the input network in case the Non-regenerative Front End unit or the
choke is faulty. DC fuses are used to protect the Non-regenerative Front End unit and the choke in
case there is a short circuit in the DC buses. If DC fuses are not used, short-circuit in the DC buses
will cause a loading of the Non-regenerative Front End unit. Vacon Ltd will not assume any
responsibility for damages caused by insufficient protection. The warranty becomes void if the
drive is not equipped with appropriate fuses.
Main circuit breakers are used to protect chokes and Non-regenerative Front End units from
overloading and unbalanced loading. Therefore, both rectifier bridges must be equipped with
individual circuit breakers, see Figure 98.
Fuse information
The values in tables are based on max ambient temperature of +50 ºC.
Table 77.
Supply voltage AC drive connection (terminal no.)
400-480 Vac 2
500 Vac 3
525-690 Vac 3
W
D
H
11748_00
111 1
3
2
2
2
2
333

Vacon NX Specifications

General

Product Type	AC Drive
Control Method	Scalar Control
Enclosure	IP00, IP21
Communication	Ethernet
Safety	STO (Safe Torque Off)
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overtemperature, Short Circuit
Ambient Temperature Range	-10°C to +50°C (with derating above +40°C)
Cooling Method	Air-cooled, Liquid-cooled