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Current Measuring Devices

Ssac

  • Transformer current sensor / AC

24 VAC, 0.5 - 5 A | ECS20BC

Article: 00034294

Transformer current sensor / AC

The ECS Series of single-phase AC current sensors
is a universal, overcurrent or undercurrent sensing
control. Its built-in toroidal sensor eliminates the
inconvenience of installing a stand-alone current
transformer. Includes onboard adjustments for
ciment sensing mode, trip point, and trip delay.
Detects over or undercurrent events like; locked
rotor, loss of load, an open heater or lamp load, or
proves an operation is taking place or has ended.

Operation
Input voltage must be supplied at all times for proper
operation. When a fault is sensed throughout the trip
delay, the output relay is energized. When the current
returns to the normal run condition or zero, the output and the delay are reset. If a fault is sensed and then
coriected before die hip delay is completed, the relay will not energize and die trip delay is reset to zero.

Adjustment
Select the desired function, over or under current sensing. Set the trip point and hip delay to approximate settings.
Apply power to the ECS and the monitored load. Turn adjustment and watch the LED. LED will light; tiun slightly
in opposite direction until LED is off. Adjustment can be done while connected to the control circuitry if the trip
delay is set at maximum. To increase sensitivity, multiple turns may be made through die ECS's toroidal sensor.
The trip point range is divided by the number of turns through the toroidal sensor to create a new range. When
using an external CT, select a 2VA, 0-5A output CT rated for the current to be monitored. Select ECS adjustment
range 0. Pass one secondary wire lead through die ECS toroid and connect the secondary leads together.

Specifications

  • Technology: transformer
  • Electrical characteristics: AC

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