BA series pumps
Pump unit with electric drive 1401
7.5
7.6 Electric motors
It is possible that (following approval from BBA Pumps) the pump or pump unit will be used in a high-
risk environment.
Examples of situations that involve high risk include:
• pumping highly flammable liquids
• dusty environment
• environment with explosive gases in the vicinity
The risk category is defined in accordance with the ATEX Directive.
It is very important that the right pump unit is chosen for such situations.
Guidelines for motor selection in ATEX zones:
Take measures to ensure that the electrical connections and cables cannot be damaged.
The voltage and frequency must be determined in advance and match the specifications for the winding
configuration of the motor.
This data is shown on the type plate of the motor.
For explosion-safe motors the data from the type plate of the motor must match the temperature class
of the flammable/explosive gas/liquid.
Environment
Environment
T1 T2 T3 T4
Gas 3 Ex II 3G EEx-nA-II-
T3
Ex II 3G EEx-nA-II-
T3
Ex II 3G EEx-nA-II-
T3
Ex II 2G Eex-d(e)-
T4
Gas 2 Ex II 2G EEx-e-II-
T3
Ex II 2G EEx-e-II-
T3
Ex II 2G EEx-e-II-
T3
Ex II 2G Eex-d(e)-
T4
Dus
t
3 Ex II 3D T125 C Ex II 3D T125 C Ex II 3D T125 C Ex II 3D T125 C
Dus
t
2 Ex II 2D T125 C
Incl. PTC sensor
Ex II 2D T125 C
Incl. PTC sensor
Ex II 2D T125 C
Incl. PTC sensor
Ex II 2D T125 C
Incl. PTC sensor