Tin tức 1 EN
Năm 2017, doanh số bán xe máy quay đầu giảm. Tuy nhiên, dù giá xe ngày càng đắt nhưng nhiều người chuyển hướng, bỏ xe cũ...
NC20
Mã sản phẩm: NC20
Thương hiệu: THYTRONIC
Trịnh Thị Thu Hà
0364487152
Nguyễn Minh Châu
0989913569
Nguyễn Hoàng Mi
0976061096
Nguyễn Cẩm Lan
0968781926
The relay type NC20 provides protection of shunt capacitor banks and harmonic filter circuits. The capacitor banks may have the following configurations:
• Single Wye grounded.
• Single Wye ungrounded (with a resistor on the output of the neutral unbalance voltage transformer in order to develop the appropriate input current for the unbalance protection).
• Double Wye ungrounded.
The capacitor banks may be: internally/externally fused or fuseless capacitor units. A suitable compensation method is provided to compensate the inherent unbalance neutral current
Protections 37, 49 and 50/51 (RMS) are based on RMS value measurement of the three phase currents (fundamental and harmonics up to the 11th)
Applications
• Bank capacitor / harmonic filter
Protection functions
• Pt100 thermometric probes (26)
• Undervoltage (27)
• Phase undercurrent (37)
• Negative sequence overcurrent (46)
• Neutral unbalance overcurrent with inherent unbalance compensation (46N)
• Thermal image (49)
• Phase overcurrent (50/51)
• RMS phase overcurrent (50/51(RMS))
• Residual overcurrent (50N/51N)
• Overvoltage (59)
• Breaker failure (BF)
• Discharge Timer (TD)
Monitoring and control functions
• CB diagnostic
• Cold Load Pickup (CLP)
• CTs monitoring (74CT)
• Digital Fault recording (DFR)
• Fault and event logging (SER & SFR)
• Logic selectivity
• Multiple setting profiles
• Programmable Logic Controller
• Self-test
• Trip circuit supervision (74TCS)
Hardware
• 2 binary inputs + 6 output relays + 8 LEDs
• Auxiliary power supply 110-230 Vac/dc
• Auxiliary power supply 24-48 Vac/dc
• Flush, projecting, projecting, rack, with separate MMI
• Network module with Ethernet FX port (optical fiber)
• Network module with Ethernet TX port (copper RJ45) + RS485 port
• Nominal current 1/5 A selectable by DIP-switch
• RS485 port (unavailable with Ethernet FX port)
• Standard CT amperometric inputs 1/5 A
Communication
• IEC 61850 Protocol
• Modbus RTU RS232 protocol
• Modbus RTU RS485 / IEC 870-5-103 / DNP3 protocol
• Modbus TCP/IP protocol (network board must be provided)