W-PR3 Protection Relay ** รับประกัน 3ปี

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