Contact Details:
NewElec (Pty) Ltd
298 Soutter Street cnr Maltzan Street
Pretoria West
Pretoria
0058
South Africa
Tel: +27 (0)12 327 1729
Alt. Tel: 0860 103 041
Fax: +27 (0)12 327 1733
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RELAYS ELIMINATE PUMP MOTOR DAMAGE
Product News Tuesday, February 26, 2013: NewElec (Pty) Ltd
Pumps are indispensable in mining, petroleum recovery, pipelines, refining and many manufacturing operations, therefore any failure can cause costly unscheduled downtime. A pump and drive motor can fail in other ways, including pumps running dry and jammed pumps causing the motor to overload, which can lead to catastrophic damage to the motor and other electrical system problems.
NewElec’s KA, KB and KC series of electronic motor protection and control relays protect LV pump motors against running dry, jamming of the motor, locked rotor, overcurrent, incorrect phase sequence, phase failure, and over and undervoltage. The relays are microprocessor based and are housed in a small footprint, DIN rail mount.
The KA relay is mains powered auto-selecting 400 V or 525 V supply while the KB and KC relays require either a 110 V or 220 V AC auxiliary supply.
Fixed thermal curves (Class 15 cold - Class 5 Hot) with thermal pre-loading, match the hot and cold stall times of the motor during operation. The relays are available in the range from 0,5 A to 50 A direct through the current transformer module block and in the range from 50 A to 200 A using external current transformers in xxx:5 ratio.
