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  Normally, temperature information of the high low voltage power distribution equipment can directly reflect the operating state, such as the dynamic and static contacts of the circuit breaker, the busbar lap joint, the cable head and other parts, which are critical heating points and not easy to measure.
  The wireless temperature sensors are used to solve this problem.
  
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  Power factor is an important parameter to measure the efficiency of electrical equipment. The high power factor indicates that the reactive power of the circuit for alternating magnetic field conversion is small, the utilization rate of the device is high. Low power factor indicates the reactive power of the circuit for alternating magnetic field conversion is large, which reduces the utilization rate of the device and increases line power loss.
  Compere provides capacitor, reactance, active filter, power factor controller, etc. to increase power factor and reduce the line power loss.
  
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  LoRa means Long Range Radio. It travels farther away than other wireless methods under the same power consumption conditions. It achieves low power consumption and long-distance uniformity. Lora communication distance is 3-5 times than traditional wireless RF in the same power consumption.
  
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  互感器又称为仪用变压器，是电流互感器和电压互感器的统称。能将高电压变成低电压、大电流变成小电流，用于量测或保护系统。其功能主要是将高电压或大电流按比例变换成标准低电压（100V）或标准小电流（5A或1A，均指额定值），以便实现测量仪表、保护设备及自动控制设备的标准化、小型化。
  
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  KPM60系列低压电动机保护控制器，可提供完善的保护控制措施，能够实现电机的网络化管理，控制器的应用极大提高了设计和生产效率，减少现场调试和维护工作量。
  
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KPM75 portable power quality analyzer

KPM75 portable power quality analyzer is developed based on KPM75 power quality analyzer. It follows international power quality standards and monitor all power quality parameters such as flicker, short interruptions in recorded voltage, and harmonic up to 63rd measurements with power data Statistics, IO signal control alarm, communication and other functions. Large graphic LCD display, pluggable function module design, widely used in key power applications, it is the ideal choice to monitor the distribution operation efficiency.

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Power Quality Analyzer
Full electrical parameter measurement: U_L-L, U_L-N, I, F, PF, P, Q, S, four-quadrant energy, etc.
High accuracy:
U Class 0.2;I Class 0.2
P Class 0.2S;Active energy Class 0.2S

Power quality analysis:
2-63^rd harmonic analysis;I/U Total distortion rate;
Crest coefficient; Valley coefficient;
Voltage imbalance rate, deviation; frequency deviation, etc.
Voltage fluctuation, flicker, intermittent wave, etc.
Voltage short interruptions, surges and sags, etc.

Record function:
50 voltage fluctuation events; 50 voltage flicker events;
50 voltage short interruptions events; 50 voltage surges and sags events;
Monthly average power factor and power data for the last three months;Maximum and minimum data
100 digital inputs events;100 digital outputs events;
Meter working time, load time statics.

Communication: RS485/Modbus-RTU;Profibus-DP
Multi rate: Total 4 tariffs for 8 different time slots
Optional function:
4 digital inputs;
4 digital outputs;
PT100 temperature monitoring;
4-20mA analog output

Working power source	Operating Voltage	AC 85-265V/ DC 80-310V
Working power source	Rated power consumption	< 3VA
Input voltage	Rated voltage	57.7/100V,220/380V,380/660V
	Overvoltage capability	1.2 times rated voltage allowed, continuous work; 2 times the rated voltage allowed 10S
	Rated power consumption	<0.5VA(per phase)
	Measurement range	LN：50~260VAC， LL：90~450VAC
Input current	Rated current	Default 5A, input range 1-6A; optional 1A, input range 1-1.2A
	Overload capacity	1.2 times rated current allowed, continuous work; 20 times the rated current allowed 10S
	Rated power consumption	＜0.4VA(per phase)
	Measurement range	5A：0~6A； 1A：0~1.2A
Measurement accuracy	Voltage	±0.2%（0.01V）
	Current	±0.2%（0.01A）
	Active power	±0.2%（0.01W）
	Reactive power	±2.0%（0.01var）
	Power factor	±1.0%（0.001）
	Frequency	±0.002Hz
	Active energy	±0.2%（0.1kwh）
	Reactive energy	±2.0%（0.1kvarh）
Measurement display	Basic parameter	Voltage / current, active power, reactive power, apparent power, frequency, active energy
	Power quality	2-63rd harmonic distortion rate; total harmonic distortion rate; crest factor; current K factor; voltage / current imbalance rate, flicker, voltage surge, dips, short interruptions
	Demand statistics	Power demand maximum, minimum and current value
	Multi-rate	8 time periods, 4 kinds of rates
	historical data	Record monthly average power factor and power data for the last three months
Communication	communication port	RS485，Photoelectric isolation interface
Communication	Communication protocol	Modbus-RTU, 1200-38400BPS Probibus-DP，9600-12Mbps
DI & DO	Switch value input	4-way passive main line contact DI input, internal supply DC24V power supply
	Relay output	4-Way DO output, contact capacity 250VAC / 5A, 30VDC / 5A
	Pulse output	1-way passive optocoupler collector active pulse output
Product features	Display	160 * 160 large dot-matrix LCD graphics display
	Extensions function	Pluggable expansion design
	Degree of protection	IP54
	Dimensions	969688
Working environment	Operating temperature	-25℃ ~ +70℃
	Storage temperature	-30℃ ~ +75℃
	Relative humidity	5% ~ 95% No condensation
	Altitude	Not more than 4000m
Safety	Withstand voltage	AC2kV/min~1mA input-output-source
Safety	Insulation	＞50MΩ
Electromagnetic Compatibility	Electrostatic discharge immunity	IEC61000-4-3, level 4
	Fast pulse group immunity	IEC61000-4-4, level 4
	Surge immunity	IEC61000-4-5, level 4
	Power frequency magnetic field immunity	IEC61000-4-8, level 4