VTS American VENTUS AVS 130 [7/36] Electrical connection and protection
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VTS American VENTUS AVS 130 [7/36] Electrical connection and protection

VTS American VENTUS AVS 130 [7/36] Electrical connection and protection
5
VTS reserves the right to introduce changes without prior notice
OMM_HE_SEC_ver 1.7
Electrical system details
grid type
TN
rated supply voltage [V]
3x400
rated insulation voltage [V]
400
rated impulse withstand voltage [V]
2500
rated short-time current I
cw
for individual circuits - effective value of the periodic component withstood for 1s, i.e. the short-
circuit current expected at switching voltage [A]
6000
rated short-circuit current [A]
6000
coincidence factor
0,8
rated frequency [Hz]
50
ingress protection level
IP00
permissible operating temperature [°C]
0-50
control circuits supply voltage DC [V]
24
Table 7 - details of the electrical installation
4 Electrical connection and protection
The power connection should be made via a separate switchgear, which is not supplied with the VTS delivery. The wiring for powering the
electric heater must be led through the panel on the back of the unit. If the cabling is led through the inspection panel from the front side,
it should be arranged in such a way as to enable the opening of the section for maintenance and service works.
The connection of the heater should be made in such a way that the heater cannot be turned on when the fans are not working - this is
done by factory-installed, serial connected safety devices in the form of a thermostat and a pressure switch, preventing the heater from
being turned on if the temperature and air flow conditions are not met.
In case of fan stoppage, it is absolutely necessary to turn off the heater power supply.
The type of cables used for each function of the heaters is presented in the table below (the cable cross-section and its protection should
be selected on the basis of the information provided in the tables in Chapter 3 - Technical details).
cable (s) for powering the electric heaters
rated voltage
3x400V AC
type
multi-core cable, copper conductor - twisted cable
work temperature [°C]
-30 - 60
control system power cable
rated voltage
230V AC
type
multi-core cable, copper conductor - twisted cable
work temperature [°C]
-30 - 60
control system control cable
rated voltage
24V DC
type
multi-core cable, copper conductor - twisted cable
work temperature [°C]
-30 - 60
Table 8 - types of cables to be used in heaters

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