Production of microcomputer based relay protection testing system

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ZLA33 Lightweight Microcomputer Relay Protection Testing SystemFeatures:

1. Adopting a brand new chassis structure and operation panel design, the internal structure is modular and intelligent, with 10 shortcut function keys for easy and efficient operation.

2. Added Ir current small signal output, capable of simulating transmitter output (0-20mA).

3. "Embedded computer+true color large screen LCD screen" with integrated design, 10.4-inch LED display screen, embedded laser mouse, which can be operated independently or connected to a laptop.

4. Open the upper computer interface program and support custom software control;

5. Un and In * are isolated from each other, which is more in line with the testing requirements on site.

6. The upper and lower computers adopt network communication methods, which have significant advantages over COM and USB communication methods, providing convenience for remote testing.

7. Supports grid synchronization, can be operated by 4 instruments simultaneously to form a simulation system, and can track grid frequency synchronization output in real time.

8. The software testing function is rich and can test various microcomputer protection devices such as voltage, current, frequency, intermediate, time, impedance, differential, etc., including relays and line protection, busbar protection, transformer protection, generator transformer group protection, etc;

9. When running offline, the test report can be saved on the device for future reference, or uploaded to an external computer for editing, printing, and other processing;

10. The software can be upgraded at any time and supports all current versions of the Windows operating system. It can be directly upgraded without changing hardware.

ZLA33 Lightweight Microcomputer Relay Protection Testing SystemTechnical Indicators:

1. Host:

Power consumption:<2000va<>

Working power supply: 85-265V, 47-63Hz, DC110V/220V, active PFC

2. Voltage source:

Three phase AC voltage: 3 × (0~125) V

Three phase DC voltage: 3 × (-175~+175) V or 1 × (0~350) V

Output accuracy:

0~2V， Error less than 4mV

2~125V， Relative error less than 0.2%

Power: AC high output power ≥ 60VA/phase

DC high output power ≥ 100W

Resolution: 1mV

Total harmonic distortion rate THD%: not exceeding 0.5%

3. Current source:

Three phase AC current: 3 × (0-30) A

Three phase DC current: 3 × (-20~+20) A

Output accuracy: 0-0.5A, error less than 1mA 0.5-30A, relative error less than 0.2%

Power: 0.5A: Large load greater than 18.0 Ω 30A: Large load greater than 0.30 Ω

Total harmonic distortion rate THD%: not exceeding 0.5%

4. Output frequency:

Range: 0-1000Hz

WU difference:

0

65

450

Resolution: 0.001HZ

5. Phase: Range: ± 360 º WU difference:<0.1 º>

6. Independent auxiliary direct source: switchable 110/220V DC, current 1A

7. Switching quantity:

Four pairs of input capacity: can connect empty nodes and potential nodes (0-250V);

Two pairs of universal output, two pairs of rapid output (reaction time<100 μ s)

8. Weight and size:

Whole machine weight:<10.8kg;<>

Overall dimensions: 358mm * 311mm * 182.5mm (length x width x height)