Danfoss VLT HVAC User Manual

4.1.3. Earthing and IT mains
The earth connection cable cross section must be at least 10 mm
2
or 2 rated mains
wires terminated separately according to EN 50178 or IEC 61800-5-1 unless national
regulations specify differently.
The mains is connected to the main disconnect switch if this is included.
NB!
Check that mains voltage corresponds to the mains voltage of the frequency con-
verter name plate.
IT Mains
Do not connect 400 V frequency
converters with RFI-filters to
mains supplies with a voltage
between phase and earth of
more than 440 V.
For IT mains and delta earth
(grounded leg), mains voltage
may exceed 440 V between
phase and earth.
Illustration 4.1: Terminals for mains and earthing.
4.1.4. Mains wiring overview
Please use the following table to follow mains wiring connection instructions.
Enclo-
sure:
A2
(IP 20/IP
21)
A3
(IP 20/IP
21)
A5
(IP 55/IP
66)
B1
(IP 21/IP
55/IP 66)
B2
(IP 21/IP
55/IP 66)
C1
(IP 21/IP
55/66)
C2
(IP 21/IP
55/66)
Motor
size:
200-240 V
1.1-3.0
kW
3.7
kW
1.1-3.7
kW
5.5-11
kW
15
kW
18.5-30
kW
37-45
kW
380-480 V
1.1-4.0
kW
5.5-7.5
kW
1.1-7.5
kW
11-18.5
kW
22-30
kW
37-55
kW
75-90
kW
525-600 V
2.2-4.0
kW
5.5-7.5
kW
Goto:
4.1.5 4.1.6 4.1.7 4.1.8
Table 4.5: Mains wiring table.
4. Electrical installation VLT
®
HVAC Drive Operating Instructions
24 MG.11.A4.02 - 09.10.06. VLT
®
is a registered Danfoss trademark
4

Danfoss VLT HVAC Specifications

General

Enclosure Rating	IP20, IP21, IP54, IP55, IP66
Storage Temperature Range	-25°C to +70°C
Output Voltage Range	0-100% of supply voltage
Communication Protocols	Modbus RTU, BACnet, Ethernet/IP, Profibus DP
Ambient Temperature Range	-10°C to +50°C (without derating)
Relative Humidity	5% to 95% non-condensing
Altitude	Up to 1000 m without derating
Cooling Method	Air cooled
Application	HVAC systems, Pumps, Fans, Compressors
Voltage Range	200-240 V, 380-500 V, 525-600 V
Frequency Range	0 Hz to 590 Hz