Power Consumption Monitoring Device-Intelligent Monitoring and Control-Unitech-Industrial Security and Intelligence Solutions Provider

Power Consumption Monitoring Device

In recent years, with the rapid development of domestic new energy construction, a large number of distributed power sources have been connected to the grid through low-voltage 400 V, bringing new challenges to the traditional transformer-area power supply system. Based on the intelligent IoT system, Unitech has developed a series of devices including transformer-area intelligent integrated terminals, power quality analysis devices, intelligent molded-case circuit breakers, intelligent breakers, and communication terminals. These products can realize electrical topology identification of transformer areas, perform real-time monitoring of new energy equipment such as wind, solar, storage, and charging, and fully grasp the operating status of distribution and utilization facilities in the transformer area. Through coordinated operation among devices, they achieve coordinated control of power supply, generation, and consumption in transformer areas, helping to realize microgrid autonomy within the area.

Product Advantages

Powerful performance

Adopts a high-performance ARM microprocessor and high-precision dedicated metering chip to carry out real-time signal acquisition, measurement, and power metering. The fastest protection action time can reach 0.05 seconds, with measurement accuracy up to class 0.5.

Convenient human-machine interaction

The monitoring device is equipped with a high-definition display screen to view measurement status data and instrument information, with a fully graphical display interface.

Customizable parameters

All protection functions and parameters can be set and modified online. The automatic reclosing function, including reclosing function, reclosing delay, and reclosing times, can all be configured.

Flexible communication

Supports infrared and RS485 communication, and can also be equipped with standard communication modules supporting 4G, HPLC, and Wi-Fi. It supports cloud platforms to realize remote signaling, remote measurement, remote control, and remote adjustment.

Technical Specifications

Low-voltage intelligent power monitoring terminal Online power quality monitoring device UT-3886 intelligent circuit breaker Intelligent molded-case circuit breaker

Rated power supply of the device	AC/DC220V, AC/DC110V	AC/DC220V, AC/DC110V
Power consumption	< 5W (under normal conditions), < 8W (during operation)	< 5W (under normal conditions), < 8W (during operation)
Rated current of analog input	1A or 5A	1A or 5A
Rated voltage of analog input	AC100V/AC220V/AC380V line voltage	AC100V/AC220V/AC380V line voltage
Analog input 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
Analog input power consumption	≤ 0.25VA	≤ 0.25VA
Analog input frequency	50Hz	50Hz
Analog input frequency	50Hz	50Hz
Rated voltage of binary input	AC/DC220V	AC/DC220V
Long-term permissible current of binary output	5A	5A
Switching output cutoff current	0.3 A (DC220V, cosφ = 0.4, L/R ≤ 7 ms); 5 A (DC220V, cosφ = 0.4, L/R ≤ 7 ms)	0.3 A (DC220V, cosφ = 0.4, L/R ≤ 7 ms); 5 A (DC220V, cosφ = 0.4, L/R ≤ 7 ms)
Communication method	RS485, Ethernet	RS485, Bluetooth

Parameter	UT-5772	UT-5771
Binary inputs	≤ 3 channels	≤ 12 channels
Binary outputs	≤ 5 channels	≤ 7 channels
Protection Level	Top panel IP51	Top panel IP51; front panel, bottom panel, left and right side panels, and back panel IP20
Rated voltage	AC 57.74 V (three-phase four-wire)	AC 57.74 V (three-phase four-wire), AC 100 V (three-phase three-wire)
Rated current	AC 5A	AC 5A
Supply voltage	AC220V or DC220V	AC220V or DC220V
Number of sampling points	25.6 K/s	25.6 K/s
Wiring method	Three-phase four-wire	Three-phase four-wire
Storage space	16G	16G
Overall power consumption	≤ 15 W	≤ 15 W
Display size	4.3 inches	5.4 inches

Rated operating voltage (Ue)	AC: 1P/2P: AC230V; 3P/4P: 400V
Rated insulation voltage Ui	500V
Rated impulse withstand voltage Uimp	4kV
Rated current (In)	1P: 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A, 80A; 2P–4P: 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A, 80A, 100A (regular stock: 20A, 32A, 63A, 80A; other models require lead time).
Rated short-circuit breaking capacity Icn	AC: 10,000 A
Rated service short-circuit breaking capacity Ics	AC: 7,500 A
Number of poles*	AC: 1P/2P/3P/4P
Instantaneous trip type	AC: type C/type D
Wiring terminal	Tunnel-type wiring terminal, M5, rated torque 3.5 Nm
Electrical service life	10000 times
Mechanical life	20000 times
Normal operating ambient temperature	-15 °C to +60 °C; limit operating temperature -20 °C to +70 °C.
Enclosure flame-retardant grade	V0
Communication	Supports bus communication protocol (TTL).
Standards compliance	Miniature circuit breaker (MCB): GB/T 10963.1; residual current operated circuit breaker with overcurrent protection (RCBO): GB/T 16917.1
Certification	All series products have obtained CCC certification.

Frame current	125A	250A	400A	630A
Number of poles	3P + N (N pole not breaking)	3P + N (N pole not breaking)	3P + N (N pole not breaking)	3P + N (N pole not breaking)
Rated operating voltage (Ue)	AC 400V 50Hz	AC 400V 50Hz	AC 415V 50Hz	AC 415V 50Hz
Rated insulation voltage (Ui)	AC 1000V	AC 1000V	AC 1000V	AC 1000V
Rated impulse withstand voltage Uimp	8000V	8000V	8000V	8000V
Utilization category	Category A	Category A	Category B	Category B
Arc distance	＜50mm	＜50mm	＜100mm	＜100mm
Ultimate short-circuit breaking capacity Icu	50kA	50kA	90kA	90kA
Service short-circuit breaking capacity Ics	35kA	35kA	70kA	70kA
Rated residual short-circuit making and breaking capacity IΔm	12.5kA	12.5kA	16.25kA	16.25kA
Residual current operating characteristics	AC type	AC type	AC type	AC type
Rated residual operating current IΔn	30 mA, 50 mA, 75 mA, 100 mA, 150 mA, 200 mA, 300 mA, 400 mA, 500 mA, 600 mA, 800 mA, 1000 mA, auto, OFF	30 mA, 50 mA, 75 mA, 100 mA, 150 mA, 200 mA, 300 mA, 400 mA, 500 mA, 600 mA, 800 mA, 1000 mA, auto, OFF	30 mA, 50 mA, 75 mA, 100 mA, 150 mA, 200 mA, 300 mA, 400 mA, 500 mA, 600 mA, 800 mA, 1000 mA, auto, OFF	30 mA, 50 mA, 75 mA, 100 mA, 150 mA, 200 mA, 300 mA, 400 mA, 500 mA, 600 mA, 800 mA, 1000 mA, auto, OFF
Residual operating time characteristics	Time-delay type	Time-delay type	Time-delay type	Time-delay type
Maximum non-operating time of time-delay type	2I△n:0.06s	2I△n:0.06s	2I△n:0.06s	2I△n:0.06s
Automatic reclosing time	20 to 60s	20 to 60s	20 to 60s	20 to 60s
Operating performance (cycles)	Energized: 1500; de-energized: 8500; total: 10,000	Energized: 1000; de-energized: 7000; total: 8000	Energized: 1000; de-energized: 4000; total: 5000	Energized: 1000; de-energized: 4000; total: 5000

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