KPM83M Integrated Motor Digital Protection Relay
KPM83 series motor digital 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.
Features
Functions of KPM83M Integrated motor digital
- Motor 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)
KPM83M Integrated Motor Digital Protection Relay Model Selection
KPM83M Integrated Motor Digital Protection Relay Technical Tables
| Model Function |
KPM | KPM | KPM | KPM | KPM | KPM | KPM | KPM | KPM | |
| 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 | √ | |||||||||
KPM83M Integrated Motor Digital Protection Relay Application
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