Emerson BW1 Manuel D’Utilisation

IntelliGear Plus™ Variable Speed MD Gearmotors

NOTICE: When using a circuit-breaker, it must be a motor circuit-breaker (D curve).
•  Comply with the size of protection fuses.
•  The cable size may vary according to legislation applicable in the country, which will take precedence over the values
given in the table below without exception. 

1.6 - UL conformity
1.6.1 Specified mains supply
The drive can be incorporated in an installation with short circuit capacity of 5000 A rms maximum at voltage 264 VAC rms 
maximum for 230 V (TL) drives or 528 VAC rms maximum for 400 V (T) drives.

1.6.2 Cables
Only class 1 copper cables 60/70° C (140/167° F) should be used.

1.6.3 Fuses
UL conformity is adhered to if the fuses are UL-listed, fast-blow fuses (class CC up to 30 A) with a rating as indicated in 
the above table and if the short-circuit symmetrical current does not exceed 5 kA.

1.4 - Radio-frequency interference:
1.4.1 - General
Variable speed drives use high-speed switches (transistors, 
semi-conductors) which switch high voltages (around 660V 
for 3-phase drives) at high frequencies (several kHz). This 
provides better efficiency and a low level of motor noise. As 
a result, they generate radio-frequency signals which may 
disturb operation of other equipment or distort measurements 
taken by sensors:

• due to high frequency leakage currents which escape to
ground via the stray capacity of the drive/motor cable and 
that of the motor via the metal structures which support 
the motor
• by conduction or feedback of R.F. signals on the power
supply cable; conducted emissions
• by direct radiation near to the main supply power cable

or the drive/motor cable: radiated emissions

These phenomena are of direct interest to the user. The 
frequency range concerned (radio-frequency) does not affect 
the energy distribution company.
1.4.2 - Standards (Emission)
The maximum emission level is set by (EN 50081-2) and  
(EN 50081-1). IntelliGear Plus conforms to:

• EN 50081-2 as standard
• EN 50081-1 with filter option

1.4.3 - Standards (Immunity)
The maximum immunity level is set by (EN 50082-2) and 
(EN 50082-1). IntelliGear Plus conforms to: 

• EN 50082-2 and EN 50082-1 as standard

IntelliGear 

Plus Number

Input Amps Wire Gauge

Fuse Size

IntelliGear 

Plus Number

Input Amps Wire Gauge Fuse Size

0.50

I 310M 050

5

14AWG

10 A

I 31M 050

2.5 

14AWG

8A