Electrical Data: Three-Phase Pumps - Edwards RV3 Instruction Manual

2.7

Electrical data: three-phase pumps

The dual-voltage, dual-frequency motor is designed for a three-phase electrical supply and is suitable for 50 Hz or
60 Hz operation. The motor can be manually switched between nominal supply voltages of 220–240 V and 380–460 V
(refer to Section 3.8.1). Pumps are supplied preset for nominal 380–460 V electrical supplies.
When you start a cold pump, the motor will draw the start-up current shown in
current will then reduce quickly as the motor reaches rated rotational speed. Within 5 minutes, as the oil and pump
warms up, the current drawn will slowly reduce to a maximum of the full load current specified in
When you start a warm pump, the motor will draw the start-up current shown in
current drawn will then immediately fall to a maximum of the full load current.
Electrical short-circuit and ground-fault protection of the pump will be provided by fitting Class CC fuses of the values
shown in Table 11 at the point of connection to the supply. If these are not available in your country of use, Type aM
European fuses of the same rating can also be used.
Table 11 - Electrical data (three-phase pumps with Item Numbers -905)
Nominal
Pump
RV3 and RV5
RV8 and RV12
© Edwards Limited 2007. All rights reserved.
Edwards and the Edwards logo are trade marks of Edwards Limited.
Frequency
supply
(Hz)
(V)
220–240 50
200–230 60
380–415 50
460 60
220–240 50
200–230 60
380–415 50
460 60
Table 11
Table 11
Full load
Power
current
(W)
(A)
250 1.7
300 1.7
250 1.0
300 1.0
450 2.5
550 2.9
450 1.5
550 1.5
A652–01–880 Issue S
for up to 0.5 seconds. The
Table 11.
for up to 0.5 seconds. The
Start-up Maximum
current fuse rating
(A) (A)
10.2 2.5
10.2 2.5
5.7 2.5
7.0 2.5
14.0 4.0
12.0 4.0
9.0 2.5
8.7 2.5
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