The volt free relay contacts change state when the voltage level phase relationship and frequency are within the selected synchronising limits.
Sync check relay crompton.
Operate the relay de energises and the sync led goes off.
The synchro check relay can be used to assist in the semi automatic parallelling of two ac power systems.
The operation as synchro check relay with dead bus the 244 14d h and 077 14d operate in the same way as the 244 14l and 077 14l synchro check relays with the addition of a dead bus option.
An extensive range of electronic control products to providing continuous monitoring and protection of any electrical parameter.
Crompton instruments have been associated with high quality technological developments in all aspects of electrical instrumentation since 1881.
Crompton instruments protector trip relays energy division.
Connecting two electrical systems that are not closely matched can cause expensive damage and disturbance to the electrical.
When the monitored parameter deviates from the desired set trip limit the relay will operate to prevent damage to power asset.
The relay output can be used for alarm or control purposes.
The relay can be used to turn on an emergency supply in the event of bus supply failure.
The range offers both traditional and technologically advanced products including single parameter units earth leakage protection ground fault relays vector shift and rocof and microprocessor system protection relays.
Synchro check parallelling the synchro check relay can be used to assist in the semi automatic parallelling of two ac power systems.
Crompton supplies protector trip relays and range of electronic control products for electric protection and monitoring.
The volt free relay contacts change state when the voltage level phase relationship and frequency are within the selected synchronising limits.
The relay will de energise again and the led will go off when the bus.
Various dc models provide protection of battery and ups systems and a range of temperature protection products is ideal to prevent the damaging effects of overheating.
Trip relays continuously monitor and protect any electrical parameter within a set point limit.
If the two supplies are not synchronised the relay operates to provide a control output.
The synchro check paralleling protector trip relay compares the voltage frequency and phase angle of two supplies and operates a relay according to the state of synchronisation of the supplies.
Ac and dc volts amps frequency watts vars phase angle power factor synchroscope phase sequence speed indicators elapsed time kilowatt hours temperature thermocouple thermistor rtd meter relays va suppressed zero maximum.
Connecting two electrical systems that a.
This optional feature enables the relay to energise with a gen supply only thus allowing the generator to power the bus during a supply failure.
