© Edwards Limited 2012. All rights reserved. Page 7
Edwards and the Edwards logo are trademarks of Edwards Limited.
Technical data
A705-61-880 Issue M
2.4 Electrical data (for Edwards supplied motors)
For motor current information please refer to the motor rating plate.
2.5 Cooling system
Table 5 - Electrical data
Electrical supply 380/400/415 V, 50 Hz or 230/460 V, 60 Hz
Thermal snap-switch contact ratings
Maximum voltage 240 V
Maximum load (inductive) 120 VA
Maximum current (resistive load) 12 A
GV250 GV400
Pump motor rating
50 Hz electrical supply 11.0 kW 18.5 kW
60 Hz electrical supply 20 h. p. 30 h. p.
Table 6 - Cooling system data
Cooling system type Direct water-cooling
Cooling-water supply
Supply temperature range 5 to 35 °C, 41 to 95 °F
Maximum supply pressure 10 bar, 1 x 10
6
Pa, 7500 Torr
Maximum required pressure differential across
supply and return
2 bar, 2 x 10
5
Pa, 1500 Torr
Warning thermal snap-switch
Opening temperature 68 °C, 154 °F
Closing temperature 62 °C, 144 °F
Shut-down thermal snap-switch
Opening temperature 75 °C, 167 °F
Closing temperature 64 °C, 147 °F
GV250 GV400
Typical heat removed from pump by cooling-water
50 Hz electrical supply 5 kW 5 kW
60 Hz electrical supply 17150 btu 17100 btu
Maximum water consumption with pump operating
temperature of 40 °C/104 °F
*
*
Pump at ultimate vacuum with a cooling-water supply temperature of 20 °C (68 °F) and an ambient
temperature of 20 °C (68 °F).
50 Hz electrical supply 240 l h
-1
240 l h
-1
60 Hz electrical supply 63.4 US gal h
-1
63.4 US gal h
-1
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