LS ELECTRIC
LS ELECTRIC
Description
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 |
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