ebm-papst AF1250-001, Operating Instructions Manual, Page: 7 / 12

Part Number
Operating Instructions
Item no. LS-122. Revision 002 Release 18/02/2016 Page 7 of 12
ebm-papst A&NZ Pty Ltd
10 Oxford Road · Laverton North VIC 3026 · Phone +61 (03) 9360 6400 · Fax +61 (03) 9360 6464
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sales@ebmpapst.com.au · www.ebmpapst.com.au
AF1250-001
AFFB1250-00
4.2.3 Reactive current
Because of the EMC filter integrated for compliance
with EMC limits (interference emission and immunity
to interference), reactive currents can be measured in
the supply line even when the motor is at a standstill
and the line voltage is switched on.

The values are typically less than 250 mA.

At the same time, the effective power in this
operating state (operational readiness) is
typically < 5 W.
4.2.4 Residual current circuit breaker (RCCB)
Only universal residual current devices (type B or B+)
are allowed. As with variable frequency drives,
residual current devices cannot provide personal
safety while operating the device.
When the device’s power supply is switched on,
pulsed charging currents from the capacitors in the
integrated EMC filter can lead to the residual current
devices tripping without delay. We recommend the
use of residual current circuit breakers with a tip
threshold of 300 mA and delayed tripping (super-
resistant, characteristic K).
4.2.5 Leakage current
For asymmetrical power systems or if a phase fails,
the leakage current can increase to a multiple of the
nominal value.
4.2.6 Locked-rotor protection
Due to the locked-rotor protection, the starting current
(LRA) is equal to or less than the nominal current
(FLA).
4.3 Connection in terminal box
4.3.1 Preparing cables for connection
Only strip the cable as far as necessary, ensuring that the cable
gland is sealed and there is no strain on the connections. For
tightening torque, see chapter 3.1 Product drawing.
Fig. 1: Recommended stripping lengths in mm (inside terminal box)
Legend: CL = control lines.
4.3.2 Connecting wires to terminals
WARNING
Live terminals and connections even with device
switched off
Electric shock

Wait five minutes after disconnecting the
voltage at all poles before opening the device.

Remove the cap from the cable gland.
Only remove caps where cables are fed in.

Equip the cable glands with the seals inserts provided in the
terminal box.

Route the wire(s) (not included in the scope of delivery) into
the terminal box.

First connect the “PE” (protective earth).
 Connect the wires to the corresponding terminals.
Use a screwdriver to do so.
When connecting, ensure that no wire ends fan out.
Fig. 2: Connecting the wires to terminals
 Seal the terminal box.