Control source + hanging table stand split structure.

Control source section:

1. It adopts luxurious aluminum alloy chassis, which is beautiful in appearance and sturdy in structure; it is equipped with a shock-proof outer packing box, which is convenient for moving and carrying.

2. Built-in industrial computer, using 7" industrial LCD screen, bright colors, large viewing angle; easy to work under strong light. Rich I0 ports, with one RS232, two 

USB port; built-in electronic disk, which can store 10,000 pieces of energy meter data.

3. Class D power amplifier with modular design, with high output power, low failure rate and high efficiency.

4. Perfect protection function, with voltage short circuit, current open circuit, power amplifier overheating and other protections.

5. It can test the metering function of the smart meter, including creep, start, two-way basic error, standard deviation, constant calibration, error variation, error curve, combined error 

Difference and voltage, current error detection, neutral current error detection functions, etc.

The 62nd to 21st harmonics are superimposed, the amplitude is 40% and the phase can be set freely. It can also perform square wave analysis on the output and draw waveforms.

7. Built-in 2x10-7 high-precision constant temperature crystal oscillator, which can test the timing and tariff functions of smart meters, including time calibration, daily timing error, tariff setting and time period switching errors 

difference, demand cycle error, demand indication error, etc.

8. The event recording function of the smart meter can be tested, including voltage loss, current loss, phase loss, full voltage loss, power failure, programming, zero reset, switch cover, gate opening, etc. 

The freezing function of the table can be tested in a variety of freezing methods.

9. It can test the carrier interface (optional) and RS485 interface of the smart meter, and can check the communication protocol consistency of the smart meter.

10. With cost control function test, it supports two types of electric energy meters, local cost control and remote cost control, and can also test trip relays.

Hanging table part:

1: Special aluminum alloy structure, equipped with a special junction box that conforms to the wiring of the State Grid smart meter.

2: Configure multi-channel pulse interface (multi-function pulse input, photoelectric pulse input, 485 communication) to test the basic error of the meter, creep test, start-up test, communication 

Protocol test, meter internal register test and other functions.

3: Each calibrated meter station is equipped with a dedicated 6-bit meter processor, which can display the basic error, clock, pulse number and relay trip and close instructions.

4: Built-in high-quality 100A magnetic latching relay, double current loop design, can perform automatic or manual error measurement of the primary and secondary loops of the anti-theft double-loop metering meter

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