Sun, 08 / 2013 7:39 am | helios

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

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