The instrument can measure and display all commonly used power parameters (such as voltage, current, active power, reactive power, frequency, wattage, etc.). ), and has the functions of switching input/output and wattage pulse output, with high cost performance, and can directly replace various instruments, relays, transmitters and other components. The instrument can communicate digitally with the upper computer to form an intelligent power distribution system.
Brief description of function
1. Telemetry function: it can measure three-phase voltage, current, active/reactive/apparent power, power factor, phase angle and frequency, and can accumulate four-quadrant electric energy (input active power, output active power, inductive reactive power and capacitive reactive power) (Note: the electric energy value can be used for internal secondary measurement management assessment and accounting, not for measurement and payment).
2. Remote communication function: 4 switch inputs (4DI), which can monitor the switch status in real time.
3. Remote control function: 2-way switch output (2DO), which can remotely control the switch.
4. Power pulse output function: 2 channels of power pulse output (active and reactive power pulses, open collector optocoupler output), with external counting device to realize electric energy measurement.
5. Real-time clock function, time-sharing electricity measurement: time-sharing electricity measurement can be divided into four time periods.
6. Communication function: RS485 interface and ModBUS-RTU protocol.
7. Flexible configuration function of the protocol: The function code of ModBUS-RTU protocol, data type of each register, processing coefficient, register address, etc. can be flexibly configured by the background configuration software, thus being directly compatible with most instruments of the same type.
8. Display function: real-time display of various measured values, switch status and control outlet status.
9. Setting function: various instrument parameters can be set, which will not be lost when power is cut off.
performance parameter
lose
enter
/
measure
quantity
/
show
You can configure three-phase three-wire (3P3L)/ three-phase four-wire (3P4L) of the display network.
electric current
Pressure grade AC400V (or AC 100V) (please specify when ordering).
Overload measurement: 1.2 times, instantaneous: 2 times/10S.
Power consumption
Impedance > 400 kω
Precision root mean square measurement, accuracy class 0.2%
electric current
Traffic level AC5A (or AC 1A) (please specify when ordering)
Overload duration: 1.2 times, instantaneous: 10 times/10S.
Power consumption
impedance
Precision root mean square measurement, accuracy class 0.2%
The frequency is 40 ~ 60 Hz and the accuracy is 0.02Hz.
The working rate is active, reactive and apparent power, and the accuracy is 0.5%.
Four quadrant active and reactive power, four time-sharing power, accuracy of 0.5%.
Display programmable settings, switch and cycle LCD display.
Power pulse pulse output 2 power pulse optocoupler outputs (active and reactive power pulses, optional function)
The pulse constant defaults to 3200imp/kWh, which can be set by the user.
Switching value
Input-input form: 4 channels, optocoupler isolation, passive zero-contact input (4DI, optional function).
The isolation voltage is 2500Vrms.
Switching value
2-way output mode, mechanical contact (passive) (2DO, optional function)
Maximum switching voltage: 250 volts AC, 30 volts DC.
Maximum switching current: 5A
Communication interface RS485
Communication protocol ModBUS-RTU
You can set the baud rate of 1200/2400/4800/9600bps.
The working range of auxiliary power supply is AC or DC 80 V ~ 270 V
Power consumption ≤5VA
Ambient working temperature -20℃ ~ 55℃
Storage temperature -40℃ ~ 85℃
Relative humidity 0 ~ 95%, no condensation.
Safety insulation strength IEC688/IEC 255-3( 1989)
Between input/output/enclosure/power supply: 2kV Acrms, 1 min.
electric current
attraction
synchronously
Electrostatic discharge immunity IEC-6 1000-4-2, Grade 4, test voltage: 8kV.
Electrical fast transient
Pulse group immunity IEC6 1000-4-4, level 4, test voltage: input 2kV；; Auxiliary power supply 4kV
Surge (impact) immunity IEC6 1000-4-5, level 4, test voltage * * * * 4kV.
Sudden voltage drop and power interruption GB/T 17626.438+0 1, level 3.
Power frequency magnetic field and damping
Oscillating magnetic field immunity GB/T 17626.5438+00, Grade 3.
Oscillating wave immunity GB/T 1726.438+02, Grade 3.
appear
The weight scale is 96mm×96mm×97mm (length× width× depth).
Weight 0.4kg