Installation Instructions
Internal Mains Fuse Replacement for VLT
0.25–90 kW (0.3–125 hp)
FC 102/FC 103/FC 202/FC 301/FC 302
1.1 Introduction
The instructions provide information about the replacement of
internal mains fuses for single-phase and 3-phase drives in A,
B, and C enclosures. This kit is designed and tested for the
North American market.
A2
A3
Single-phase
—
—
3-phase
X
X
Table 1.1 Supported Enclosures
1.2 Safety Instructions
WARNING
DISCHARGE TIME
The drive contains DC-link capacitors, which can remain
charged even when the drive is not powered. High voltage
can be present even when the warning LED indicator lights
are off. Failure to wait the specified time after power has
been removed before performing service or repair work can
result in death or serious injury.
•
Stop the motor.
•
Disconnect AC mains and remote DC-link power
supplies, including battery back-ups, UPS, and DC-
link connections to other drives.
•
Disconnect or lock PM motor.
•
Wait for the capacitors to discharge fully. The
minimum waiting time is specified in Table 1.2 and
Table 1.3, and is also visible on the nameplate on
top of the drive.
•
Before performing any service or repair work, use
an appropriate voltage measuring device to make
sure that the capacitors are fully discharged.
Voltage [V]
Power range [kW (hp)]
0.25–3.7 kW (0.3–5 hp)
208–230
5.5–45 kW (7.5–60 hp)
0.25–7.5 kW (0.3–10 hp)
460–480
11–90 kW (15–125 hp)
0.75–7.5 kW (1.0–10 hp)
575–600
11–90 kW (15–125 hp)
Table 1.2 Discharge Time for VLT
A5
B1
B2
C1
X
X
X
X
X
X
X
X
Minimum waiting
time (minutes)
4
15
4
15
4
15
®
HVAC Drive FC 102,
Danfoss A/S © 10/2018 All rights reserved.
®
VLT
Refrigeration Drive FC 103, and VLT
Voltage [V]
208–230
460–480
C2
575–600
X
X
Table 1.3 Discharge Time for VLT
1.3 Fuse/Relay Locations
Enclosure size A
Illustration 1.1 and Illustration 1.2 show the mains, motor, and
relay connection locations for A2, A3, and A5 enclosures.
Illustration 1.2 identifies the fuse locations.
1
Input/mains connection
2
Relay connection
3
Motor connection
Illustration 1.1 A2 and A3 Enclosures (3-phase Only)
®
Drives,
®
AQUA Drive FC 202
Power range [kW (hp)]
Minimum waiting
time (minutes)
0.25–3.7 kW (0.3–5 hp)
5.5–37 kW (7.5–50 hp)
0.25–7.5 kW (0.3–10 hp)
11–75 kW (15–100 hp)
0.75–7.5 kW (1–10 hp)
11–75 kW (15–100 hp)
®
AutomationDrive FC 300
4
15
4
15
4
15
MI92D402
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