Phase Protection Relay, PF-001 HomeProductsRelayPhase Protection Relay, PF-001 Phase Protection Relay, PF-001 INTRODUCTION The PF-001 relay is design to continuously monitor 3 phase power supplies and protect against : Phase failure Incorrect phase sequence (rotation) Symmetrical undervoltage Asymmetrical undervoltage Inquiry Back Out of stock., contact us Product Description FURTHER INFORMATION The internal relay remains energized and the LED is illuminated only when the power system is satisfactory for connection to 3 phase motors or other 3 phase equipment. The internal relay will also de-energies on asymmetrical undervoltages which often occur when a fuse goes open with a motor or transformer on line, providing that the “ghost” voltage does not exceed 75% of the nominal. CHARACTERISTICS Burden : 4 VA at nominal volts Difference : Approx. 2% Contact rating (max) : 5A 250V (non inductive) Contact life : 10 ჼ at full load rating Temperature range : 0℃ to 60℃ Dielectric : AC 2000V one Min Change over contacts : 1A1B or 2A2B Fixing : To standard 35mm DIN rail SPECIFICATIONS Nominal Voltage : 1ph inputs 120, 220, 240, 50/60Hz 3ph 3w inputs 380 or 415v L-L. 3ph 4w inputs 120, 220, 240. L-N. Max. voltage : nominal +30% Temperature dependence : Less than 1% change of setting for 10℃ change. Calibrated speed : ±5% to ±20% of nominal volts. Item NO : PF-001Nominal Voltage : 380V or 415V L-L, 50 or 60HzMax. voltage : nominal +15%Min voltage : Factory pre set to de-energies at 85% nominal ORDERING INFORMATION 1. Item No. 2. Nominal L-L volts and frequency. 3. Single or double pole change-over contacts.