MMP
Smart Electronic Motor Protection Relay
ㆍCurrent, Voltage, Power Measurement, and Power Factor Protection
ㆍInstantaneous interruption compensation and restarting
ㆍHarmonic measurement (1st to 16th)
ㆍModbus communication and 4~20mA
Features
Convenience
ㆍComprehensive digital motor protection relay with the MCU (microprocessor control unit)
ㆍApplicable to inverter circuits
ㆍFunction to store the cause(s) of failure/fault
ㆍOne-body type and separate body type
ㆍCommunication function (RS485 modbus and 4~20ma output)
ㆍA wide range of reset functions
ㆍDate information display
ㆍPassword setting
ㆍTotal operating time and operating time setting
ㆍWide setting of ground fault current sensitivity 30ma~25a
Reliability
ㆍThermal heat build-up inverse time/inverse time/definite time selection function
ㆍWide setting range and dual protection
ㆍThe device may be used without external CT up to 100A, providing convenience and cost-effective solution
ㆍVarious motor starting modes
ㆍMetering of current, voltage, and energy (with 1% accuracy for A & V)
ㆍCarries out complex relay functions related to current, voltage, energy, and power factor
ㆍSelf-diagnosis and sequence monitoring
ㆍPower loss and restarting
ㆍFrequent-starting protection
Functions
| Function | Range | Accuracy(%) | Remarks |
|---|---|---|---|
| Voltage (V) | 0.00V~9999V | ±1.0% | Phase1 : Phase voltage, Phase3 : Line voltage |
| Current (A) | 0.00V~9999V | ±1.0% | Phase current |
| Zero-phase current (In) | 0.00V~9999V | ±3.0% | – |
| Reverse current (I2) | 0.00V~9999V | ±3.0% | – |
| Active power (W) | 0.000W~999.9MW | ±1.0% | Forward |
| Reactive power (VAR) | 0.000W~999.9MVAR | ±1.0% | Forward |
| Active power amount (WH) | 0.000W~999.9MWH | ±1.0% | – |
| Reactive power amount (WVARH) | 0.000W~999.9MVARH | ±1.0% | – |
| PF | -1.00~1.00 | ±0.03 | cosθ |
| Voltage hamonics (%) | 0~100% | ±5.0% | 2nd -16th odd harmonics |
| Current hamonics (%) | 0~100% | ±5.0% | 2nd -16th odd harmonics |
Specification
| Rating | Specification |
|---|---|
| Communication number | 1~247 |
| Baud rate | 9600, 19200, 38400 bps |
| Communication Parity | None, Even, Odd |
| Stop Bit | 1bit (fixed) |
| Communication data swap | OFF / ON (Limited to float, long data of 0x04 (Read Input Registers)) |
| Operation mode | Differential |
| Communication distance | Max. 1.2km |
| Cable | RS-485 Shielded Twist 2-Pair Cable |
| Transmission Method | Half-Duplex– |
| Max. In/Output Voltage | -7V~+12V |
