Fuses; Mains Disconnectors; Control And Ct Cable Routing; Control Wire Installation - Danfoss VLT AAF006 Operating Instructions Manual

Electrical Installation

4.2.11 Fuses

Branch circuit protection
To protect the installation against electrical and fire hazard,
all branch circuits in an installation, switch gear, machines
etc., must be short-circuited and overcurrent protected
according to national/international regulations.
Short circuit protection
4 4
Protect the active filter against short circuit to avoid
electrical or fire hazard. Danfoss recommends using the
fuses in Table 4.11 and Table 4.12 to protect service
personnel and equipment in case of an internal failure in
the device.
Overcurrent protection
The active filter is equipped with an internal overcurrent
protection that avoids overload in normal running
conditions. Overload protection is needed in case of
internal failures to avoid fire hazard due to overheating of
the cables in the installation. Use fuses or circuit breakers
for overcurrent protection and comply with local and
national regulations.
Mains fuses
Active Filter
AAF006, 190 A
AAF006, 250 A
AAF006, 310 A
AAF006, 400 A
Table 4.11 Recommended Mains Fuses
Supplemental fuses
Active Filter
AAF006, 190–
400A
AAF006, 190–
400A
AAF006, 190–
400A
AAF006, 190–
400A
Table 4.12 Recommended Supplemental Fuses

4.2.12 Mains Disconnectors

Enclosure
size
D
E
E
E
Table 4.13 Mains Disconnect Part Numbers
26
Operating Instructions
Bussmann
170M3018
170M4017
170M4017
170M6013
Protection Fuse
Bussmann
SMPS KTK-4
Littelfuse
Fan KTK-15
Soft-charge Bussmann FNQ-
resistor R
Bussmann FNQ-
CT R
Power & voltage Type
A190 380–480 V ABB OETL-NF200A
A250 380–480 V ABB OETL-NF400A
A310 380–480 V ABB OETL-NF400A
A400 380–480 V ABB OETL-NF800A
Danfoss A/S © 09/2014 All rights reserved.

4.2.13 Control and CT Cable Routing

Tie down all control wires to the designated control cable
routing. Connect the shields properly to ensure optimum
electrical immunity.
CT connection
Make connections on the terminal block below the active
filter card. Place the cable in the path inside the filter and
secure it with other control wires.

4.2.14 Control Wire Installation

All terminals to the control cables are located on the
control or AFC board.
To connect the cable to the terminal:
1. Strip insulation 9–10 mm (0.4 in.)
Rating
Illustration 4.17 Stripped Insulation
350 A, 700 V
700 A, 700 V
700 A, 700 V 2. Insert a screwdriver (maximum 0.4x2.5 mm) in the
square hole.
900 A, 700 V
Rating
4 A, 600 V
15 A, 600
V
Illustration 4.18 Inserting the Cable
1 A, 600 V
3 A, 600 V
3. Insert the cable in the adjacent circular hole.
Illustration 4.19 Removing the Screwdriver
9 - 10 mm
(0.37 in)
MG90V302