Fuses; Non-Ul Compliance - Danfoss VLT FC 102 Operating Instructions Manual

Specifications
Generic specifications
Filter efficiency
Typical average switching frequency
Response time (reactive and harmonic)
Settling time - reactive current control
Settling time - harmonic current control
Overshoot – reactive current control
Overshoot – Harmonic current control
The cooling capability of air is decreased at lower air
pressure.
Below 1000 m altitude no derating is necessary, but above
1000 m the ambient temperature (T
output current (I
Illustration 8.10.
An alternative is to lower the ambient temperature at high
altitudes and thereby ensure 100% output current at high
altitudes. As an example of how to read the graph, the
situation at 2000 m is elaborated. At a temperature of 45
8 8
°C (T
- 3.3 K), 91% of the rated output current is
AMB, MAX
available. At a temperature of 41.7 °C, 100% of the rated
output current is available.
I (%)
OUT
100
95
90
85
80
0 500
Illustration 8.10 Altitude Derating
110
100
90
80
70
60
50
40
30
20
10
0
0 5
Illustration 8.11 Input/Output vs. Maximum Ambient
Temperature
96
) or maximum
AMB
) should be derated in accordance with
out
1000 1500 2000
Altitude (meters above sea level)*
10 15 20 25 30 35 40
Tamb (Max) Deg C
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VLT HVAC Drive FC 102 Low Harmonic Drive

8.4 Fuses

Danfoss recommends using fuses and/or circuit breakers
on the supply side as protection in case of component
break-down inside the frequency converter (first fault).
NOTICE
Using fuses and/or circuit breakers ensures compliance
with IEC 60364 for CE or NEC 2009 for UL.
Branch circuit protection
To protect the installation against electrical and fire hazard,
all branch circuits in an installation, switch gear, machines,
and so on, must be protected against short-circuit and
over-current according to national/international
regulations.
NOTICE
The recommendations do not cover branch circuit
protection for UL.
Short-circuit protection
Danfoss recommends using the fuses/circuit breakers in
chapter 8.4.2 Fuse Tables to protect service personnel and
property in case of component break-down in the
frequency converter.

8.4.1 Non-UL compliance

2500 3000
Non-UL compliance
If UL/cUL is not to be complied with, Danfoss recommends
using the following fuses, which ensure compliance with
EN50178:
N132-N200
P250-P400
Table 8.4 Recommended Fuses for non-UL Applications
45 50 55
3.0–4.5 kHz
<0.5 ms
<20 ms
<20 ms
380-500 V type gG
380-500 V type gR
MG16I302
97%
<10%
<10%