Electrical Connection - Elektror A-HP Betriebs- Und Montageanleitung

Operating and assembly instructions A-HP
vibrational load.
• Other standards and regulations must be observed
depending on the application.
• Blower feet and consoles must be designed only for the
respective blower's own weight.
• Cover the open air intake and discharge with protective
grilles according to DIN EN ISO 13857.
• Ensure that the motor has adequate ventilation. Ambient
temperature -20°C to +60°C
• The drive motor ventilation system must not be aff ected by
the installation situation.
Minimum distance to the blower cover (for the intake of
cooling air)
Drive power
≤ 1.5 kW
> 1.5 kW

3.2 Electrical connection

Note!
The work described in this section may only be
performed by a qualifi ed electrician. Connect the
appliance as per the circuit diagram in the termi-
nal box and in accordance with the relevant local
requirements.
For devices operated with a frequency converter, the temper-
ature sensor (PTC thermistor) or temperature monitor (break
contact) must be connected to the converter and inspected.
• Check that the mains voltage matches the ratings on the
nameplate.
• The safety earth terminal can be found in the terminal box.
Note!
The following information should also be ob-
served when operating the drive motor with a
frequency converter:
• The devices may only be operated with
frequency converters.
• The frequency converter supply voltage must
only be a maximum of 400 V without the motor
fi lter. Appropriate measures such as a motor fi lter
to protect the motor must be installed on the
motor terminals with higher frequency converter
supply voltages, longer lines and/or if the pulse
voltages are exceeded (max. 1000 Vpk for drive
motors up to 0.75 kW, maximum 1300 Vpk for
drive motors larger than 0.75 kW) Please contact
the converter supplier in this case. If a motor fi lter
is included in the delivery, this must be installed
between the converter and the motor. Please
ensure that there is suffi cient space in the switch
cabinet and take into account the installation and
assembly requirements in the operating instruc-
tions of the frequency converter/motor fi lter
manufacturer.
• The maximum cable length between the mo-
tor and switch cabinet frequency converter (e.g.
Lenze Vector, Omron MX2 and Omron RX) must
not exceed 20 m. Maximum cable lengths of up to
3 m are permitted with Kostal INVEOR frequency
converters installed close to the motor and up to
10 m with Lenze MOTEC frequency converters.
Further information on wall mounting close to the
motor can be found in the original operating and
assembly instructions of the respective frequen-
www.elektror.com
Minimum distance
to the blower cover
[mm] [inches]
34 1.34
53 2.09
cy converter manufacturer. The electrical con-
necting cables between the motor and frequency
converter in the above cases must be suitable
shielded cables, laid using the shortest route and
without clamping and plug-in connections and
connected correctly at both sides.
• The shielding braid in the connecting cables
must be connected fully, continuously and on
both sides, i.e. to the frequency converter and
motor, and at low resistance and permanently to
protective earthing systems or the main earthing
bus bar. Suitable EMC cable glands must be used
for this on the motor side and also on the INVEOR
wall mounting plate, if necessary.
• It is important to ensure that the solid con-
nection of the device to the protective earthing
system or several suitable earthing lines is at low
resistance and permanent for blowers installed
with electrical insulation (e.g. through vibration
dampers, compensators, insulated pipes, etc.)
for frequency converter operation.
For further information about EMC compliant installation and
assembly, refer to the Operating and Assembly Instructions
issued by the frequency converter manufacturer.
3.3 Confi guration for three-phase current blowers
Warning!
Danger due to loose or improperly tightened con-
nections!
Improperly tightened and loose connections
cause electric shocks, fi res, property damage and
personal injuries!
Check for loose connections and tighten in
accordance with the tightening torques in the fol-
lowing table.
W2 U2 V2
U1 V1 W1
L1 L2 L3
(L3) (L1)
 circuit
(low voltage)
Threaded bolt
M4
M5
M6
M8
Checking the direction of rotation
Switch on the blower. The running direction of the impeller
should correspond to the direction arrow on the housing. If
the impeller rotates in the wrong direction, then interchange
L1 and L3.
3.4 Declaration concerning the EMC Directive
(2014/30/EU)
Our blowers are components that are designed to be in-
stalled in other machines or systems by qualifi ed personnel,
i.e. not intended for consumers. The manufacturer of the fi nal
system/machine must guarantee/confi rm that the fi nal sys-
tem/machine complies with the EMC Directive.
Prior to the start-up and during operation of the device on a
EN
W2 U2 V2
U1 V1 W1
L1 L2 L3
(L3) (L1)
Y circuit
(high voltage)
Tightening torque
1,2 Nm
2,0 Nm
3,0 Nm
6,0 Nm
13