中文版
Description
Relay model SR489-P5-HI-A20 operates on a control power voltage of either 90 to 300 VDC or 70 to 265 VAC at 48-62 Hz. There is no harsh environmental conformal coating available on this model.
Damped Oscillation Reference Standard IEEE/ANSI C37.90.1
General Input A to G Configurable Assignable Digital Inputs 1 to 7
Ground Overcurrent Curve Shapes ANSI, IEC, IAC, Flexcurve, Definite Time
High Set Phase Overcurrent Timing Accuracy ±50 ms at 50/60 Hz or ±0.5% total time
Humidity Operating up to 95% (Non-Condensing)
Loss of Excitation (Impedance) Elements Trip, 2 Zones Using Impedance Circles
Phase Differential Pickup Accuracy As Per Phase Current Inputs
Pulse Output Parameters + kwh, +kvarh, –kvarh
Radiated and Conducted Emissions Class A
RF Immunity Test Level Level 3
SR489-P5-HI-A20 is a generator management relay that is manufactured by GE Multilin for the 489 series. This relay has 5 A phase CT secondaries. The HI control power is 90-300 VDC and 70265 VAC at 48-62 Hz. The analog outputs on this relay are 4 to 20 mA. This relay has a basic display. When the relay is energized, the relay contacts are unsafe to touch. It is the customer’s responsibility to ensure proper insulation levels if the output relay contacts are required for low voltage accessible applications. The fuse current rating is 2.5 A. The fuse type is 5x20mm HRC SLO-BLO Littelfuse, and the fuse model is 215-02.5.
The order code for this series tells the user a few details about the part. The 489 indicates the series that this part comes from. The next two digits are the phase current inputs, which are either P1 (1 A phase CT secondaries) or P5 (5 A phase CT secondaries). The next two digits are the control power, which are either LO (20-60 VDC and 20-48 VAC at 48-62 Hz) or HI (90-300 VDC and 70-265 VAC at 48-62 Hz). The next two or three digits are the analog outputs, which are either A1 (0 to 1 mA analog outputs) or A20 (4 to 20 mA analog outputs). The next digit is the display, which is either blank (basic display), E (enhanced display with a larger LCD), or T (enhanced display with Ethernet 10Base-T). The next digit is the harsh environment protection, wherein H is the chemical environment conformal coating.
Along with the 40-character LCD screen, there are also three groups of LEDs. The LEDs on the SR489-P5-HI-A20 relay will indicate the status of the generator, the output status, and the status of the relay itself. For more information please refer to chapter four of the GEK-106494N Instruction Manual.
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