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Protection, Measurement and Control Devices Protection, Measurement and Control Devices

Intelligent Monitoring Control

Achieve monitoring, control, and protection of the main electrical equipment in industrial enterprises.

Protection, Measurement and Control Devices Product Advantages Technical Specifications Related Terminals
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Protection, Measurement and Control Devices

Protection, Measurement and Control Devices

Protection, Measurement and Control Devices

Protection, Measurement and Control Devices

Protection, Measurement and Control Devices

Protection, measurement and control devices are designed based on high-end software and hardware platforms, which integrate protection, measurement, control, monitoring, communication, event recording, fault recording and other functions, feature high reliability, perfect functions and flexible expansion, etc. They are suitable for 110kV and below voltage levels conventional substations, intelligent substations, power plants and power supply offices, and are widely used in electric power, chemical industry, metallurgy, coal industry and other industries.

Product Advantages

Autonomous and controllable

Autonomous and controllable

Nationally localized hardware and software platform design with fully independent intellectual property rights.

Full range of models

Full range of models

Complete set of protection and control devices for lines, transformers, and busbars at voltage levels of 110 kV and below.

Standards compliance

Standards compliance

Meets the technical specifications of State Grid Corporation of China and China Southern Power Grid.

Flexible expansion

Flexible expansion

Plug-and-play intelligent boards for functional expansion to meet various engineering applications.

Technical Specifications

110 kV protection, measurement and control device 10–35 kV protection and control devices 6–20kV protection and control devices 1 kV protection and control device Safe and stable control device
Parameter UT-5812 high-voltage line protection system UT-5816 bus tie (sectionalizing) protection device UT-5821 busbar protection device UT-5881 intelligent terminal
Rated power supply of the device DC220V / DC110V（-20%-15%） DC220V / DC110V（-20%-15%） DC220V / DC110V（-20%-15%） DC220V / DC110V（-20%-15%）
Rated frequency of analog input 50Hz 50Hz 50Hz 50Hz
Rated current (In) of analog input 1A、5A 1A、5A 1A、5A 1A、5A
Analog input AC current overload capacity 2 x rated current, continuous operation;10 x rated current, 10s allowed; 40 x rated current, 1s allowed 2 x rated current, continuous operation;10 x rated current, 10s allowed; 40 x rated current, 1s allowed 2 x rated current, continuous operation;10 x rated current, 10s allowed; 40 x rated current, 1s allowed 2 x rated current, continuous operation;10 x rated current, 10s allowed; 40 x rated current, 1s allowed
Rated voltage of binary input DC220V / DC110V DC220V / DC110V DC220V / DC110V DC220V / DC110V
RS485 communication protocol IEC60870-5-103，IEC60870-5-101，Modbus IEC60870-5-103，IEC60870-5-101，Modbus IEC60870-5-103，IEC60870-5-101，Modbus IEC60870-5-103，IEC60870-5-101，Modbus
RS485 communication transmission rate Default: 19200bps，min：4800bps，max：57600bps Default: 19200bps，min：4800bps，max：57600bps Default: 19200bps，min：4800bps，max：57600bps Default: 19200bps，min：4800bps，max：57600bps
RJ45 Ethernet/LC fiber Ethernet protocol IEC61850 ，60870-5-104 IEC61850 ，60870-5-104 IEC61850 ，60870-5-104 IEC61850 ，60870-5-104
Measurement accuracy – voltage and current ±0.2% ±0.2% ±0.2% ±0.2%
Measurement accuracy – frequency ±0.01Hz ±0.01Hz ±0.01Hz ±0.01Hz
Measurement accuracy – others ±0.5% ±0.5% ±0.5% ±0.5%
Chassis dimensions Width 483 mm x height 177 mm x depth 291 mm Width 483 mm x height 177 mm x depth 291 mm Width 483 mm x height 354 mm x depth 291 mm Width 483 mm x height 177 mm x depth 291 mm
Parameter UT-811i line overcurrent protection device UT-812i line distance protection device UT-816i bus tie (sectionalizing) protection device UT-831i transformer differential protection device
Rated power supply of the device DC220V / DC110V（-20%-15%） DC220V / DC110V（-20%-15%） DC220V / DC110V（-20%-15%） DC220V / DC110V（-20%-15%）
Rated frequency of analog input 50Hz 50Hz 50Hz 50Hz
Rated current (In) of analog input 1A、5A 1A、5A 1A、5A 1A、5A
Analog input AC current overload capacity 2 x rated current, continuous operation; 10 x rated current, 10s allowed; 40 x rated current, 1s allowed 2 x rated current, continuous operation; 10 x rated current, 10s allowed; 40 x rated current, 1s allowed 2 x rated current, continuous operation; 10 x rated current, 10s allowed; 40 x rated current, 1s allowed 2 x rated current, continuous operation; 10 x rated current, 10s allowed; 40 x rated current, 1s allowed
Rated voltage of binary input DC220V/110V DC220V/110V DC220V/110V DC220V/110V
RS485 communication protocol IEC60870-5-103 IEC60870-5-103 IEC60870-5-103 IEC60870-5-103
RS485 communication transmission rate Default:19200bps，min：4800bps，max：57600bps Default:19200bps，min：4800bps，max：57600bps Default:19200bps，min：4800bps，max：57600bps Default:19200bps，min：4800bps，max：57600bps
RJ45 Ethernet/LC fiber Ethernet protocol DL/T860、IEC60870-5-104 DL/T860、IEC60870-5-104 DL/T860、IEC60870-5-104 DL/T860、IEC60870-5-104
Long-term permissible current of binary output 5A 5A 5A 5A
Cutting current 0.3 A (DC220V, L/R load) 0.3 A (DC220V, L/R load) 0.3 A (DC220V, L/R load) 0.3 A (DC220V, L/R load)
Chassis dimensions Width 147 mm x height 266 mm x depth 200 mm Width 147 mm x height 266 mm x depth 200 mm Width 147 mm x height 266 mm x depth 200 mm Width 147 mm x height 266 mm x depth 200 mm
Parameter UT-5702 PT protection and control device UT-5276 integrated protection and control device UT-5718 mine-use anti-overstage integrated protector
Rated supply voltage AC/DC220V，AC/DC110V，DC48V AC220V，DC220V/110V/48V/24V 65V～265V AC/DC
Power consumption < 5W (under normal conditions), < 8W (during operation) < 20W (under normal conditions), < 30W (during operation) < 15W (under normal conditions), < 25W (during operation)
AC voltage 100 V, 380 V (rated voltage Un) 100 V, 380 V (rated voltage Un) 57.7 V (phase voltage), 100 V (line voltage)
Rated frequency 50Hz 50Hz 50Hz
Voltage circuit overload capacity 1.2 Un, continuous operation; 1.4 Un, permitted for 10s 1.2 Un, continuous operation; 2 Un, permitted for 10s 1.2 Un, continuous operation; 2 Un, permitted for 10s
Current circuit overload capacity / 2 x rated current, continuous operation;10 x rated current, 10s allowed; 40 x rated current, 1s allowed 2 x rated current, continuous operation;10 x rated current, 10s allowed; 40 x rated current, 1s allowed
RS-485 protocol IEC60870-5-103， Modbus IEC60870-5-103， Modbus IEC60870-5-103， Modbus
RJ45 Ethernet/LC fiber Ethernet protocol IEC61850 ，60870-5-104 IEC61850，60870-5-104 IEC61850，60870-5-104
Chassis dimensions Width 105 mm x height 155 mm x depth 102 mm Width 105 mm x height 155 mm x depth 102 mm Width 330 mm x height 230 mm x depth 65 mm
Parameter UT-5611 line protection and control device UT-5671 motor protection and control device
Rated power supply 85-265V, AC and DC available 85-265V, AC and DC available
Power consumption < 8W (under normal conditions), < 10W (during operation) < 8W (under normal conditions), < 10W (during operation)
Rated current of analog input 1A/5A/10A/25A/50A/100A/150A/200A 1A/5A/10A/25A/50A/100A/150A/200A
Analog input current overload capacity 2 x rated current, continuous operation; 10 x rated current, 10s allowed 2 x rated current, continuous operation; 10 x rated current, 10s allowed
Analog input leakage current 0.3A, 1 A, 5 A, 10 A 0.3A, 1 A, 5 A, 10 A
Analog input power consumption Up to 0.5VA/phase Up to 0.5VA/phase
Rated voltage of analog input 100V, 380V, 660V 100V, 380V, 660V
Analog input voltage overload capacity 1.2 x rated voltage, continuous operation; 1.5 x rated voltage, 10s allowed 1.2 x rated voltage, continuous operation; 1.5 x rated voltage, 10s allowed
Analog input power consumption ≤ 0.5 VA/phase at rated voltage ≤ 0.5 VA/phase at rated voltage
Binary input 5 channels (AC220V/110V) 5 channels (AC220V/110V)
Relay binary output 8 channels (8A) 8 channels (8A)
DC output 4-20mA 4-20mA
RS-485 protocol IEC60870-5-103, IEC60870-5-101 IEC60870-5-103, IEC60870-5-101
Parameter UT-5891
Rated voltage of DC power supply 220V, 110V
Permissible deviation of DC power supply -20%~+10%
Ripple factor of DC power supply ≤ 5%
Rated voltage of AC circuit 57V; 100V
Rated current of AC circuit 1A,5A
Frequency of AC circuit 50Hz
Power loss of AC current circuit ≤ 1 VA per phase (rated current: 5 A); ≤ 0.5 VA per phase (rated current: 1 A)
Power loss of AC voltage circuit ≤ 1 VA per phase (rated voltage)
Power loss of DC power supply circuit ≤ 50 W during normal operation; ≤ 80 W when the device operates.
Overload capacity of AC current circuit 2 x rated current: long-term continuous operation; 10 x rated current: 10s allowed; 40 x rated current: 1s allowed
Overload capacity of AC voltage circuit 1.2 x rated voltage: continuous operation; 1.5 x rated voltage: 10s allowed
Chassis dimensions Width 483 mm x height 177 mm x depth 291 mm

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