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the winding insulation, carefully ensure that no converter-related overvoltages with a
peak value exceeding (1.1 * √2 * UN) occur at the terminals of the electric motor.
• If anti-condensation heating is used, then an interlock circuit must ensure that the anti-
condensation heating can only be operated when the motor is shut down. Once the
motor has been shut down, the anti-condensation heating may only be switched on after
a specified wait time has elapsed.
• The information provided in the Operating Instructions must be strictly complied with.
• If the three-phase motor is cooled using a separately driven fan, then it must be strictly
ensured that the three-phase motor can only be operated when the separately driven fan
is switched on.
• It is only permissible to use these motors if they are in full compliance with local
regulations (e.g. energy efficiency, product safety) in the country in which they are being
used.
DMT 01 ATEX E 014X, RU С-DE.АЖ58.В.02301-22, EPS 21 UKEX 1 310 X:
• It is not permissible that the motors are operated if they have an excessively thick layer of
dust on them.
• When installing motors with the free shaft stub facing upwards, the mounting method
must prevent foreign bodies from falling into vent holes.
• For motors with a fixed connecting cable: The free end of the cable must be connected
according to valid regulations for electrical installations.
• If the three-phase motor is cooled using a separately driven fan, then it must be strictly
ensured that the motor can only be operated when the cooling is switched on.
• Before commissioning, it must be carefully ensured that when fed from a converter, no
inadmissibly high overvoltages occur at the motor terminals.
• The clearances and creepage distances in the terminal box do not permit overvoltages as a
result of converter operation with a periodic peak value of more than 1500 V for rated
voltages ≤ 500 V. The motor insulation system may mean that it is necessary to further
limit periodically occurring overvoltages.
BVS 14 ATEX E 081 X, BVS 14 ATEX E 082 X, IECEx BVS 14.0052X, 2020312301002068,
RU C-DE.AA81.B.00156-19, EPS 21 UKEX 1 301 X, EPS 21 UKEX 1 303 X:
• It is only permissible that the motor is fed from a voltage-source DC link converter with
pulse width modulation when the performance characteristics listed in Section 15.3
(ATEX) /"parameters" (IECEx) are strictly maintained.
• Before commissioning, it must be carefully ensured that when fed from a converter, no
inadmissibly high overvoltages occur at the motor terminals.
• The clearances and creepage distances in the terminal box do not permit overvoltages as a
result of converter operation with a periodic peak value of more than 1500 V for rated
voltages ≤ 1000 V. The motor insulation system may mean that it is necessary to further
limit periodically occurring overvoltages. If the motor is operated with a plastic fan, a
circumferential velocity of less than 50 m/s must be strictly maintained.
1MB1.33 Eagle Line shaft heights 71 ... 315
Operating Instructions, 08/2023, A5E52990459A
Safety information
2.13 Certificate with special conditions
25
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