Công ty TNHH Phương Lai chuyên cung cấp các mặt hàng linh kiện điện tử đảm bảo uy tín, chất lượng. Luôn là người bạn đồng hành tin cậy của người tiêu dùng. voltage, phase, frequency relay – Selec VFR608 Protection relay Selec VFR608 (Multi function protection relay : under voltage, over voltage, phase loss, phase sequence, phase voltage […]
Công ty TNHH Phương Lai chuyên cung cấp các mặt hàng linh kiện điện tử đảm bảo uy tín, chất lượng. Luôn là người bạn đồng hành tin cậy của người tiêu dùng.
voltage, phase, frequency relay – Selec VFR608
Protection relay Selec VFR608 (Multi function protection relay : under voltage, over voltage, phase loss, phase sequence, phase voltage unbalance, under frequency, over frequency relay
Relay kỹ thuật số bảo vệ tích hợp quá áp, thiếu áp, mất pha, đảo pha, mất cân pha, tần số thấp, tần số cao. Tất cả các chức năng có thể lập trình on/off
FEATURES – TÍNH NĂNG CHÍNH
Network selection 3Ø-4 wire / 1Ø-2 wire
Monitoring Under Voltage / Over Voltage / Asymmetry / Phase reversal / Phase failure (Phase loss)
Monitoring Over Frequency / Under Frequency
Adjustable trip levels
Separate selectable trip time delay for Voltage And Frequency
Error indication on LCD display as well as by LEDS
SPECIFICATION – THÔNG SỐ KỸ THUẬT CHÍNH
NOMINAL VOLTAGE (Vn) : 240 VAC
NOMINAL FREQUENCY : 50 Hz
SUPPLY VARIATION : 70 – 130% of Vn
SUPPLY NETWORK SELECTION : 1 Ø-2 wire / 3 Ø-4 wire
PHASE FAILURE TRIP :
For L1 Phase: <70% of nominal voltage
For L2 & L3 phase: OFF / 70% of nominal Voltage
Min voltage measurable: 60V (In OFF Condition)
VOLTAGE ADJUSTMENT :
Under Voltage: OFF / 180 to 234V (in one volt step)
Over Voltage: OFF / 246V to 300V (in one Volt step)
Voltage Asymmetry: OFF / 0V to 99V (in 1V Step)
TRIP TIME DELAY FOR VOLTAGE (tr):
0.2 to 99 sec (Actual delay=Adjustable delay + Response time)
Accuracy: ± 0.5% of F.S. or ±100ms (whichever is greater)
ADJUSTMENT OF HYSTERESIS FOR VOLTAGE : 1 to 10% of trip level
FREQUENCY ADJUSTMENT :
Under frequency: OFF / 40 – 49Hz ( in 1 Hz step )
Over frequency: OFF / 51 – 60Hz ( in 1 Hz step )
TRIP TIME DELAY FOR FREQUENCY (tf):
0.2 to 99 sec (Actual delay=Adjustable delay + Response time)
Accuracy: ± 0.5% of F.S. or ±100ms (whichever is greater)
ACCURACY : ±0.5% @ constant conditions
RESPONSE TIME : 150ms max
POWER ON DELAY (Td) : Approx 400ms
OPERATING TEMPERATURE : OoC to 50oC
RESET : Auto reset on removal of fault condition
OUTPUT RATING : Fail safe relay SPDT: [email protected] VAC/30 VDC, Resistive
PAGE UPDATE TIME : 2 sec
DISPLAY UPDATE TIME : 1 sec
Nguồn: dien-congnghiep.com
