W-PR3 Protection Relay
W-PR3 Phase Protection Relay
🌈🌈เปิดใบกำกับภาษีได้ แจ้งรายละเอีดทิ้งไว้เลยจ้า
Feature
Approved standard :CE Mark
Power consumption :2 VA
Input voltage :220 440 460 VAC (Requirement)
380 400 or 415 VAC 3Ø (Selectable)
System frequency :50/60 Hz.
Accuracy :± 0.5% of normal voltage
Display :7-segment Red LED Letter 0.39” (9.90mm)
Phase sequence :L1 L2 L3
Range
Over voltage (OV) :Adjustable from 10% – 20% (Requirement 10-25%)
Under voltage (UV) :Adjustable from 2% to 20% (Requirement 2-25%)
Unbalance voltage (UB) :Adjustable from 2% to 20% (Requirement 2-25%)
Differential (Hysteresis):Preset at 1%
Time
Delay off :UV and UB Adjustable 0-5 sec.
OV preset at 2 sec.
Delay on :Adjustable from 0-15 min
Relay Output
Output type :2-pole change over (DPDT)
Contact rating :5A at 250VAC
Operations :Mechanical : 2 x 107
times Electrical : 1 x 105
times
Relay reset :Automatic