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...
NVA100
Mã sản phẩm: NVA100
Thương hiệu: THYTRONIC
Trịnh Thị Thu Hà
0364487152
Nguyễn Minh Châu
0989913569
Nguyễn Hoàng Mi
0976061096
Nguyễn Cẩm Lan
0968781926
The relay type NVA100 can be typically used in radial or meshed MV and LV networks as feeder or power transformer
protection:
• On radial, ring and parallel feeders of any length in solidly grounded, ungrounded, Petersen coil and/or resistance grounded systems.
• On parallel connected generators and transformer on the same Busbar.
• In HV, MV and LV electrical machines and network, load shedding and separation of active users from the grid.
Specifications
Key: standard optional alternative
Applications
• Feeder
• Utilities interconnection
Protection functions
• Overflux (V/Hz) (24)
• Pt100 thermometric probes (26)
• Undervoltage (27)
• Positive seq. undervoltage (27V1)
• Directional active overpower (32P)
• Directional reactive overpower (32Q)
• Directional active underpower (37P)
• Directional reactive underpower (37Q)
• Negative sequence overcurrent (46)
• Thermal image (49)
• Phase overcurrent (50/51)
• Residual overcurrent (50N/51N)
• Voltage-controlled overcurrent (51V)
• Minimum power factor (55)
• Overvoltage (59)
• Residual overvoltage (59N)
• Negative seq. overvoltage (59V2)
• Phase directional overcurrent (67)
• Ground directional overcurrent (67N)
• Automatic reclosing (79)
• Frequency rate of change (81R)
• Underfrequency & overfrequency (81U 81O)
• High impedance restricted earth fault (87NHIZ)
• Breaker failure (BF)
• Phase interruption under low-load condition (I2/I1)
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
• Second harmonic restraint
• Self-test
• Trip circuit supervision (74TCS)
• VTs monitoring (74VT)
Hardware
• 100 V standard voltage inputs
• 2 binary inputs + 6 output relays + 8 LEDs
• 400 V standard voltage inputs
• Auxiliary power supply 110-230 Vac/dc
• Auxiliary power supply 24-110 Vac/dc
• Flush, projecting or rack mounting
• 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)
Communication
• IEC 61850 Protocol
• Modbus RTU RS232 protocol
• Modbus RTU RS485 / IEC 870-5-103
• Modbus RTU RS485 / IEC 870-5-103 / DNP3 protocol
• Modbus TCP/IP protocol (network board must be provided)