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Overview
MD-1110 multi-function electric parameter meter (short for the instrument) is a new generation of intelligent electric meter. It can measure, display, switch input, output, analog output and communicate.The instrument has the ability to be set in the work field, the additional function can be free to set up the condition, the measuring accuracy is high. It can adapt to the various complex industrial electric power environment.The instrument is suitable for measuring the current, voltage, frequency, power and power factor, electric power of the digital oil field and industrial circuit.
1.Features
Using the ac sampling technique and effective value algorithm, the distortion waveform can be measured accurately.
★The sampling frequency is as high as 8kHz, high harmonics, can still be measured accurately, can satisfy most industrial electric power environment.
★Fixed frequency sampling, each sampling value participates in the energy accumulation, the power meter is not affected by the frequency fluctuation of the power grid.
★Current time tracking of the frequency variation of the grid, based on the sampling algorithm of fixed-frequency tracking, ensures that the current, voltage, power and other valid values are not spectrum leaked by the fixed frequency sampling.
★The phase difference between the transformer and the distribution capacitance is compensated by the digital transfer technique, and the accurate measurement is guaranteed under the condition of low power factor.
★The instrument adopts high reliable, high performance and industrial-grade components.
★Variable ratio can be set, also can extend switch quantity input, switch quantity output, analog quantity output and communication function.
★It can realize limit alarm output.
★The transmission output range can be 0～10 mA、0～20 mA、4mA～20mA.(default 4mA～20mA )
★Standard RS-485 communication port、MODBUS-RTU communication agreement, The baud rate is 1200 ~ 19200(default 9600bps)
2.Main technique performance and data
technique data | index | ||
accuracy grade | 0.5 grade | ||
display mode | Four LED or LCD display, the unit automatically switches and the decimal point is shifted automatically | ||
Auxiliary power supply | work range | DC9V～24V or AC/DC85V～264V | |
power consumption | <5VA | ||
input | voltage | rated value | AC450V |
overload | Duration: 1.2 times, instantaneous: 2 times/s The "HHHH" overload id is displayed at 1.2 times the rating
| ||
power consumption | <1VA(phase) | ||
impedance | about600kΩ | ||
electricity | rated value | AC/DC 1A 、5A | |
overload | Duration: 1.2 times, instantaneous: 10 times/5s The "HHHH" overload id is displayed at 1.2 times the rating
| ||
power consumption | <0.5VA(each phase) | ||
impedance | <20mΩ(each phase) | ||
frequency | 45Hz～65Hz | ||
output | alarm output | Contact capacity AC250V/2A、DC30V/2A | |
transmission output | DC0～10mA、0～20mA、4mA～20mA,output load≤500Ω, voltage output customizable | ||
communication | RS-485 communication interfce, MODBUS_RTU communication protocol, bund rate 1200、2400、4800、9600、19200 can be set | ||
power pulse output | Pulse constant: 1200imp/kwh(kvarh) Output mode: decoupled optocoupler with Open Collector output Pulse collection interface requirements:：VCC≤5V Iz≤50mA | ||
safety | withstand voltage | Power supply and input、output> AC 2kV 50Hz/1min，input and output> AC2kV 50Hz/1min
| |
insulation resistance | >100MΩ | ||
Heat resistant and fire retardant | Terminal: 960 ℃, shell: 960 ℃, action time: 30 s | ||
Electromagnetic compatibility | Electrostatic discharge | ±8kV | |
Rapid transient pulse group | ±1kV | ||
High frequency electromagnetic field | 80MHz～1000MHz,10V/m | ||
environment | environment temperature | Working environment temperature: -10～55℃, storage environment: -25～70℃ | |
environment humidity | ≤95%RH，no dew, no corrosive gas | ||
elevation | ≤2500m | ||
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