Emc Test Results - Danfoss VLT Series Quick Manual

Quick Guide

1.8.2 EMC Test Results

The following test results have been obtained using a system with a frequency converter, a screened control cable, a control
box with potentiometer, as well as a motor screened cable.
RFI Filter Type Conduct emission. Maximum shielded cable length
Industrial environment
EN 55011 Class A2
Without With
external external
filter filter
H4 RFI filter
(Class A1)
0.37-22 kW
3x380-480 V
IP20
H3 RFI filter
(Class A1/B)
30-90 kW
3x380-480 V
IP20
Table 1.25 EMC Test Results
Protection and features
•
Electronic thermal motor protection motor protection against overload.
•
Temperature monitoring of the heatsink ensures that the frequency converter trips in the event of overtem-
perature.
•
The frequency converter is protected against short-circuits between motor terminals U, V, W.
•
When a motor phase is missing, the frequency converter trips and issues an alarm.
•
When a mains phase is missing, the frequency converter trips or issues a warning (depending on the load).
•
Monitoring of the intermediate circuit voltage ensures that the frequency converter trips, when the intermediate
circuit voltage is too low or too high.
•
The frequency converter is protected against earth faults on motor terminals U, V, W.
Mains supply (L1, L2, L3)
Supply voltage
Supply frequency
Max. imbalance temporary between mains phases
True Power Factor (λ)
Displacement Power Factor (cosφ) near unity
Switching on the input supply L1, L2, L3 (power-ups) enclosure frame H1-H5
Switching on the input supply L1, L2, L3 (power-ups) enclosure frame H6-H8
Environment according to EN 60664-1
The unit is suitable for use on a circuit capable of delivering not more than 100.000 RMS symmetrical Amperes, 240/480 V
maximum.
Motor output (U, V, W)
Output voltage
Output frequency
Switching on output
Ramp times
®
VLT HVAC Basic Drive Cascade Controller Quick Guide
Housing, trades and
light industries
EN 55011 Class A1 EN 55011 Class B
Without With Without
external external external
filter [m] filter [m] filter [m]
25 50
50 20
®
MG18F402 - VLT is a registered Danfoss trademark
Radiated emission
Industrial
environment
EN 55011 Class A1
With Without With
external external external
filter [m] filter filter
20 Yes Yes
Yes
3.0% of rated supply voltage
≥0.9 nominal at rated load
overvoltage category III/pollution degree 2
0-100% of supply voltage
0-200 Hz (VVC
1
Housing, trades and
light industries
EN 55011 Class B
Without With
external external
filter filter
-
-
380-480 V ±10%
50/60 Hz
(>0.98)
Max. 2 times/min.
Max. 1 time/min.
plus
), 0-400 Hz (u/f)
Unlimited
0.05-3600 s
31
1