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...
NM20
Mã sản phẩm: NM20
Thương hiệu: THYTRONIC
Trịnh Thị Thu Hà
0364487152
Nguyễn Minh Châu
0989913569
Nguyễn Hoàng Mi
0976061096
Nguyễn Cẩm Lan
0968781926
The relay type NM20 can be used for protection of large size motors in MV systems.
For any grounded systems (solidly grounded, ungrounded or Petersen coil and/or resistance grounded) the protection can be used on feeders of any lenght.
Specifications
Key: standard optional alternative
Applications
• Motor
Protection functions
• Pt100 thermometric probes (26)
• Undervoltage (27)
• Positive seq. undervoltage (27V1)
• Reverse active overpower (32R)
• Phase undercurrent (37)
• Directional active underpower (37P)
• Loss of field (40)
• Negative sequence overcurrent (46)
• Phase reversal (47)
• Thermal image (49)
• Phase overcurrent (50/51)
• Residual overcurrent (50N/51N)
• Locked rotor (51LR(48)/14)
• Minimum power factor (55)
• Overvoltage (59)
• Residual overvoltage (59N)
• Negative seq. overvoltage (59V2)
• Maximum number of starting (66)
• Ground directional overcurrent (67N)
• Underfrequency & overfrequency (81U 81O)
• High impedance restricted earth fault (87NHIZ)
• Breaker failure (BF)
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)
• VTs monitoring (74VT)
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)