Frequency protection relay KCF221x seriessingle-phasethree-phasedigital
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Characteristics
- Measured/monitored value
- frequency
- Network
- single-phase, three-phase
- Other characteristics
- digital, time delay
- Trigger voltage
Min.: 100 V
Max.: 480 V
Description
KCF221x Series
KCF221x - FREQUENCY GUARD FOR SINGLE OR THREE PHASE SYSTEMS
Precision High / Low Frequency Protection
Ranges 45-55, 55-65 and 45-65Hz
Quartz Controlled Frequency Protection and Meter
Definite time trip delays
Complies with G59 requirements
Optional very fast analogue output (<50mS), (F-versions)
Optional Slave Indicator with Status LEDs
The digitally controlled KCF221E provide precision (0.2%) high/low frequency protection.
A digital, crystal controlled frequency window discriminator controls operation and delay of the frequency low/high alarm relays. The unit measures the zero point crossing of the voltage true r.m.s. value, and accuracy is independent of any wave form distortion.
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