الأوصاف
GE Multilin 489-P5-HI-A20 is a cost-effective draw-out generator protection system for small/medium generators, featuring 5A phase CT inputs (P5), high-range control power (HI), 4-20mA analog outputs (A20), integrating protection, monitoring, metering, and advanced communications.
- Comprehensive protection: stator differential, 100% stator ground, loss of excitation, reverse power.
- Advanced monitoring: 12 RTD inputs (thermal), 4 analog inputs (vibration).
- Industry-standard communications: RS232, RS485, 10BaseT Ethernet; supports Modbus RTU/TCP, DNP 3.0.
- Draw-out design for minimal maintenance downtime; sunlight-readable display for local monitoring.
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Current Inputs (P5): 5A CT secondary, range 0.02-20x CT, accuracy ±0.5% at <2x CT, ±1% at >2x CT; CT withstand: 80x rated current (1s), 40x (2s), 3x (continuous).
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Voltage Inputs: VT ratio 1.00-240.00:1; phase VT secondary 200V AC (full-scale), neutral VT 100V AC; accuracy ±0.5% of full scale; max continuous 280V AC.
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Power Supply (HI): 90-300V DC / 70-265V AC (48-62Hz), 45VA max, 25VA typical.
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Analog Outputs (A20): 4-20mA, accuracy ±1% of full scale, max load 1200Ω.
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Output Relays: 6 Form C contacts, 10A (30VDC resistive), 10A (120VAC resistive); operate time 10ms.
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Communications: 2x RS485 (up to 19.2kbps), 1x RS232 (9600 baud), 10BaseT Ethernet.
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Environmental: Operating temp -40°C to +60°C; humidity up to 95% (non-condensing); altitude ≤2000m.
