低压微机综合保护测控装置

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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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  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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  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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  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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- 无线测湿装置
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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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KPM83 Microprocessor integrated digital protection relay

KPM83digital protection relay is based on high-performance DSP processor and embedded real-time operating system, it is a protection and monitoring devices that integrated protection, monitoring and control, communications.

It is suitable for substations, power plants, industrial and mining enterprises, construction and other fields with voltage levels up to 35KV. It has such functions as protection, telemetry, remote mains, remote adjustment and remote control to achieve full control and management of it. , we can provide line protection and monitoring and control, transformer protection and control, motor protection and control, PT protection and control, capacitor protection and control, spare power source automatic throw-in device coupler protection and other product types.

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KPM83 Specification KPM83 User manual

KPM83 digital protection relay Hardware:
Back plugging and unplugging module, separated the strong and weak electricity; the reinforced unit chassis is designed to resist strong vibration and interference. It can be decentralized mounted in the switch cabinet for running.
32-bit microcomputer processor, large-capacity RAM and Flash Memory, strong ability of data processing, logic operation and information storage, fast running speed and high reliability.
16-bit high-precision A/D, high measurement accuracy.
Running and event reports can be saved no less than 32 recent events
Graphic LCD, menu operation

Main Features:
◆ Reinforced unit chassis is designed to resist strong vibration and interference, especially
suits for harsh environments. It can be decentralized mounted in the switch cabinet for running.
◆ All integrated circuits use military-grade standards to ensure higher stability and reliability.
◆ Using 32-bit MCU as CPU, configures large-capacity RAM and Flash Memory, with strong
ability of data processing, logic operation and information storage, fast running speed and
high reliability.
◆ 16-bit A/D is used for data acquisition, data acquisition is 24 points per week, and the
protection measurement accuracy is high.
◆ The graphic LCD screen can display various operating states and data in real time, the
information is detailed and intuitive, and the operation and debugging are convenient.
◆ Large capacity information record: It can save no less than 32 recent events historical
reports, with action parameters, power-down retention, easy for accident analysis.
◆ Adopts MODBUS-RTU protocol with RS-485 communication interface. The networking is
economical and convenient, and can directly communicate with the computer monitoring and
gateway.

Measurement accuracy:
Analog value measurement error ≤±0.2%
Power measurement error ≤0. 5%
Digital input voltage 220V resolution is no more than 2ms
Pulse input voltage 24V pulse width is not less than 10ms

Power consumption
AC voltage loop:＜1VA/phase(rated)
AC current loop: < 1VA/phase (5A); < 0.5VA/phase (1A)
Zero-sequence current loop:＜0.5VA
Protection power loop:<12W (normal condition); <15W(Under the protectionaction)

Model Function		KPM	KPM	KPM	KPM	KPM	KPM	KPM	KPM	KPM
Model Function		83L	83T	83TD	83C	83M	83MD	83P	83B	83U
Protection function	Quick-break	√	√
	Differential quick-break protection			√			√
	Over-current I	√	√		√	√				√
	Over-current II	√	√		√	√
	Negative sequence over-current I					√
	Negative sequence over-current II					√
	Inverse time overcurrent					√
	Zero sequence overcurrent	√	√		√	√				√
	Unbalanced zero sequence over-current				√
	Overload	√	√			√
	Inverse time overload		√
	Overvoltage protection	√			√	√
	Zero sequence overvoltage				√	√
	Unbalanced zero sequence overvoltage				√
	Low voltage protection	√			√			√
	Low voltage protection I					√
	Low voltage protection II					√
	Low voltage inverse time zero sequence		√
	Voltage extraction	√
	Short circuit protection					√
	Overheating protection					√
	Post acceleration	√
	Recloser	√
	PT disconnection	√	√		√			√
	Discharge PT overvoltage				√
	Non-electrical protection		√	√			√
	Low-frequency load shedding	√
	Power direction	√
	Ratio Difference Protection of Second Harmonic Braking			√			√
	CT break detection and blocking function			√			√
	Fault Recording						√
	Long startup time protection					√
	Charge protection								√	√
	Insulation monitoring							√
	Control loop disconnection									√
Measurement function	Circuit breaker remote control split output signal	√	√	√	√	√
	IA,IB,IC,UA,UB,UC,Ia2,Ib2,Ic2,U0, I0,P,Q,F,cosΦ,etc	√	√		√	√
	Iah,Ibh,Ich,Ia1,Ib1,Ic1						√
	Unbalanced current real-time display			√