Three Phase Smart Energy Meter Test Bench

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Description

Technical Parameters for a 20 Position Test Bench:

 

Power Supply:

Voltage

3x230/398V AC (±15%)

Frequency

50/60Hz (±2Hz)

Power Capacity

>3x6kVA

Ambient Temperature

-100C to +400C

Relative Humidity

35% to 85%

Power Source:

Voltage

Test Voltage Output (Phase-Neutral)

3x(24V to 276V)

Power of the Voltage Output

3x500VA

Resolution

Better than 0.01% of full scale value of range

Setting Accuracy

Better than 0.05% of final scale value

Stability

Better than 0.005% /h (integration time 150s)

Load Regulation from 0 to Max.

<0.01%

Distortion Factor

<0.3% of linear resistive load

Harmonics

2nd to 21st (Programmable)

Current

Test Current Output

3x(1mA to 100A)

Power of the Current Output

3x1500VA

Resolution

Better than 0.01% of full scale value of range

Setting Accuracy

Better than 0.05% of final scale value

Stability

Better than 0.005% /h (integration time 150s)

Load Regulation from 0 to Max.

<0.01%

Distortion Factor

<0.3% of linear resistive load

Harmonics

2nd to 21st (Programmable)

Phase Angle

Range

0 to 3600

Resolution

0.010

Setting Accuracy

0.10

Frequency

Range

45Hz to 65Hz

Resolution

0.01Hz

Reference Standard Meter:

General Introduction:

SZ-03A-K8 series three phase standard meter utilize such lasted technology as high speed DSP, CPLD, MCU and ADC with self-calibration, etc. Thus, the meter can sample AC signal in high speed and treat them with special digital arithmetic. All of these make the meter’s structure simply and measure 0.02% accuracy of the relative error.

Features:

  1. High accuracy-Measuring error of three phase voltage, current, power and electric energy error ≤±0.02%.
  2. Wide measurement range-Voltage from 5V to 480V, Current from 10mA to 120A.
  3. Multi-parameter measurement-Testing three phase voltage, current, power, electric energy, power factor, phaseand frequency synchronously.
  4. Multi-mode measurement-Three phase four wire (3P4W) & three phase three wire (3P3W) active, Three phase four wire (3P4W) & three phase three wire (3P3W) reactive, Single phase two wire (1P2W) active, Single phase two wire (1P2W) reactive.
  5. Harmonic measuring and analyze-Testing waveform distortion factor and 2nd-21st harmonic content, and displaying rod chart.
  6. Verify the test bench-Measuring the asymmetry rate of voltage, current and phase in every phase and the stability of power.
  7. Waveform display-Display voltage and current waveforms synchronously.
  8. Ideal standard meter-Energy pulse constant can be set automatic or manual, calculating and displaying the error and standard deviation of tested meter; have the function of electricity quantity add up, power on/off can be controlled by manual or external synchronous pulse.
  9. Software calibration-Through software can calibrating full range and phase angle to improve the reliability and efficiency.
  10. Strong communication function-There are two communication ports RS-232 and RS-485, can be connected with PC and test bench, realizing automatic measurement and calibration.
  11. Friendly interface-Big and clear LCD display, large information can display.
  12. Easy operation-One-key directly control.

Customized Part:

Rack:

  • 20-meter position distribute on 2-meter racks, one side two rows, each row include 5 positions.
  • There is a three-colour indicator light on the top of rack.
  • Each meter position installs a quick connector QCD, a push hand, a scanning head, an error display window, and a DB9M socket.
  • All the current cable wiring in the rack is 30mm2.
  • DB9M socket is for RS232 port, RS232 is offered by MOXA C320Turbo/PCI system. MOXA system and MOXA system include C320PCI-20 and Cable20PCI-32 each set, 40 ports connect with 20pcs meters.
  • Isolation Transformer(ICT)-Testing of single-phase meters with closed I-P links using voltage isolation.

 

Technical Data of ICT:

• Current Range : 3x(10mA-120A)

• Accuracy : 0.01%(100mA-120A)

• Ratio 1:1(Primary Current =Secondary Current)

• Frequency : 45Hz - 65Hz,

• Output Burden Voltage: 3x0.6V(Max)

• Output Power: 3x60VA(Max)

• Communication Port: RS-485

• Power Supply: ±12VDC

• Power consumption: 20VA (max)

• Operation temperature: -10°C to +50°C

• Storage temperature: -20°C to +60°C

• Dimensions (H×W×D): 290mm×275mm×296mm

• Weight: approx. 17kg

 

Scanning Head:

The light head can be adjustable and retractable for easy access when putting meters in place.

 

Quick Connection Device (QCD):

  • QCD designed to be able to test three phase and single phase meter types.
  • Pins can be spring loaded to avoid too much stress to the meter terminal connection.
  • Minimum distance between two adjacent pins (minimum pitch) can be down to 11mm apart.
  • Entire row of pins can be shifted back and forth a small distance from its normal position.
  • Current pins can withstand 100A for long periods (minimum 5 mins).
  • Terminal pins designed for easy removal for cases when setup needs to be changed.

Cabinet:

  1. Manual control device is installed on the front panel of power source cabinet.
  2. Main power switch and power supply switch for each module are installed on the back panel of cabinet,

include:

Power: Main power switch

PC: Computer

MOXA: MOXA system

  1. Install one isolation power supply transformer of 230V/230V 60VA for RD30 in cabinet.
  2. All the current cable in cabinet are 30mm2.

***Other accessories include suitable copper cabling, voltage clamps, signal pulse input wires, One Indication lamp on top of the test bench – Amber light – power indicator (Voltage present at the terminal) Red light – Problem indicator Green light – Program running (software controllable), Emergency stop located on both side of the test bench, Power socket located on the power source, Main switch at the power supply.

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