250 Series Trip Relays

Supplied by: Crompton

An extensive range of electronic control products providing continuous monitoring and protection of any electrical parameter. When the monitored parameter deviates from the desired set point limit, the relay will operate to prevent damage to the power asset. Designed to suit a wide variety of applications the range offers both traditional and technologically advanced products, from single parameter units through to multifunctional microprocessor based protection relays.

This versatile range features a host of DIN-rail or wall mounted protectors offering numerous trip functions for single and three-phase power systems, including over and under-voltage, current, frequency, three-phase sequence, phase failure and phase balance. For the specific protection of generator sets, the range offers unbalanced current, reverse power flow, reverse VAr, syncro-check and under/over-speed trip relay functions. 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.

Product Variants

Title Download
AC Current with Adjustable Time Delay Download PDF
AC Voltage with Adjustable Differential Download PDF
AC Voltage with Adjustable Time Delay Download PDF
Frequency Download PDF
Combined Under/Over-Voltage and Frequency Download PDF
Phase Sequence and Phase Failure Download PDF
Phase Balance Download PDF
Reverse Power (current) Download PDF
Synchro-Check (parallelling) Download PDF
DC Voltage Download PDF
Thermistor Trip Download PDF
Hot Spot 3 Temperature Relay Download PDF
Hot Spot 6 Temperature Relay Download PDF
DC Millivolts/Thermocouple Download PDF
DC Transducer Trip Download PDF
Speed Sensing Download PDF