technical documentation manuals 308013008

20
| Electrical connection
Table 10 Motor protection
Type
Motor protection
Thermal protection,
standard
Speed regulation
Fans for long-term
operation —20 °
C...55 °C only, see
5.1.2 Temperature
types, page 4
By customer
PTC
Possible via frequency converter
AXC (B),(F),(K)
AXR (B),(F),(K)
AXC (B)-P, (F)-P
AXC (B)-PV, (F)-PV
AJ8 (B), (K), (F)
AJR (B), (K), (F)
By customer- must be
bypassed in case of fire
without (PTC optional) Possible via frequency converter
8.2 Connection
♦ Check that the data on the name plate matches the
connection data.
♦ Complete the electrical connection according to the
circuit diagram.
♦ Use all of the locking screws.
♦ Insert the screws by hand to avoid damaging the
thread.
♦ Tighten all glands well in order to guarantee
protection class IP.
♦ Screw the lid of the terminal box/inspection switch
evenly tight.
♦ Connect the cable end in a dry environment!
♦ Install a circuit breaker in the permanent electrical
installation, with a contact opening of at least 3 mm
at each pole.
Protective grounding wire
The protective grounding must have a cross-section equal to or greater than that of the phase conductor.
Residual current circuit breaker
All-current-sensitive residual current circuit breakers are required for use in alternating-current systems with 50/60
Hz, in combination with electronic devices such as EC motors, frequency converters or uninterruptible power supplies
(UPS).
Type
Electrical Connection
AXC, AXR, AXS, AXC-P, AXC-
PV, AJR, AJ8
Connection via terminal box. The terminal box is fitted on the outside of the housing.
AXCBF
Connection via terminal box. The terminal box is attached to the motor.
8.2.1 Terminal box
The below terminal boxes are used for fans up to a nominal current of 100 A. If the nominal current exceeds 100 A oth-
er terminal boxes are used.
A: M16x1,5
B: M25x1,5
• up to size* 900
• up to 63 A
A: M16x1,5
B: M40x1,5
C: M50x1,5
• from size* 1000
• up to 100 A
A
B
A
B C
*nominal diameter of the fan
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