CR4320-30 CR Magnetics Inc, CR4320-30 Datasheet - Page 35

• Manufacturer Part Number: CR4320-30
• Description: SENSOR CURRENT 30A 24V UNI MOD
• Manufacturer: CR Magnetics Inc
• Series: -r

Specifications of CR4320-30

• Current - Sensing: 30A
• Accuracy: ±0.5%
• Sensitivity: -
• Current - Supply: -
• Sensor Type: Open Loop
• Voltage - Supply: 24V
• Output: 4 ~ 20mA DC
• Frequency: 50/60Hz
• Response Time: 200ms
• Polarization: Unidirectional
• Operating Temperature: -30°C ~ 60°C
• Package / Case: Module
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: Q4344664

Typical Applications
This illustrates a typical application for monitoring current to a 3-Phase motor. External current transformers are
attached to each of the three incoming power lines. The secondary leads from each current transformer are
routed through the window openings in the CR4170 True RMS Current Transducer. A standard 5 Amp second-
ary current transformer is recommended to be attached to a transducer rated for 5 Amp input. With the trans-
ducer attached to a PLC, the over/under current and phase loss conditions can be monitored.
OVER/UNDER CURRENT MONITORING
Looping the primary current-carrying wire several times through the window opening may change the scaling
factor. The “actual” measurement range will be the nameplate rating of the transducer divided by the number of
wire passes. For example, the CR4220-30 has a nameplate rating of 0-30 Aac. Three passes of the wire
through the window opening will then provide an effective range of 0-10 Aac (30/3).
LOOP-POWERED AC CURRENT TRANSMITTER
DC current may be monitored by using the voltage transducer attached to a resistive shunt. The illustration
shows a CR5310-.05 transducer with an input range of 0-50 mv attached to a standard 50 mv resistive shunt.
The output is attached to a standard 0-5 Vdc panel meter.
DC CURRENT MONITORING
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