5 Installation at Site
35 of 132
Amacan P
5.4 Electrical system
5.4.1 Information for planning the control system
For the electrical connection of the pump set observe the wiring diagrams contained
in the Annex. (
ð
Section 9.3, Page 96)
The pump set is supplied with power cables; it is wired for DOL starting. Star-delta
starting is also possible, except for size Amacan P 1600 - 1060.
NOTE
When laying a cable between the control system and the pump set's connection
point, verify that the number of cores is sufficient for the sensors. A minimum cross-
section of 1.5 mm² is required.
The motors can be connected to electrical low-voltage grids with mains voltages and
voltage tolerances to IEC 60038. The permissible tolerances must be observed.
(
ð
Section 6.2.1, Page 44)
5.4.1.1 Starting method
The pump set is wired for DOL starting. Star-delta starting is technically possible.
For reducing the starting current autotransformers or soft starters can be used. For
selecting suitable devices observe the rated current of the motor.
At least three times the rated current is required for reliable start-up. The run-up
time must not exceed 4 seconds.
After start-up of the pump, a soft starter must always be bypassed.
5.4.1.2 Overload protection
1. Protect the pump set against overloading by a thermal time-lag overload
protection device in accordance with IEC 60947 and local regulations.
2. Set the overload protection device to the rated current specified on the name
plate. (
ð
Section 4.3, Page 18)
5.4.1.3 Level control
DANGER
Pump set running dry
Explosion hazard!
▷
Never allow an explosion-proof pump set to run dry!
CAUTION
Fluid level below the specified minimum
Damage to the pump set by cavitation!
▷
Never allow the fluid level to drop below the specified minimum.
Automatic operation of the pump set in a tank requires the use of level control
equipment.
Observe the minimum fluid level. (
ð
Section 6.2.4.3, Page 46)
5.4.1.4 Operation on a frequency inverter
The pump set is suitable for operation on a frequency inverter as per IEC 60034-17.
Содержание Amacan P 1000-700
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