434B microcomputer relay protection tester

434B microcomputer relay protection tester

Four voltage channels, three current channels, one auxiliary DC voltage channel, eight input channels, four output channels, with GPS synchronization test function
◆ Three phase current, four phase voltage output simultaneously, current 40A/phase, voltage 125/phase
The main control board adopts ASP+FPGA structure, 16 bit DAC output, and can generate high-density sine waves of 2000 points per week for the base wave, which is one of the best in domestic testing instrumentsz·uiHigh level, greatly improving waveform quality and enhancing the accuracy of the testing instrument.
◆ Connected to the computer via USB 2.0 interface, no need for any adapter cables, easy to use.
◆ It can perform regular inspections on various relays, protection and safety automatic devices on site, and simulate various complex instantaneous, transient, and conversion faults for whole group testing. Real time saving of test data, display of vector graphics, drawing of various characteristic curves, online printing of reports, etc.
◆ It is convenient to test the backup automatic switching device and microcomputer differential protection device, making the test very efficient.
◆ Connect to a laptop or desktop computer for easy operation.

434B microcomputer relay protection tester

1、 Main features

Built in high-performance industrial computer, Windows XP operating system, stable and reliable operation.

Standard four phase voltage and three-phase current are output simultaneously, with a voltage of 125V/phase and a current of 40A/phase. The parallel connection of three-phase current can reach up to 120A.

The 8.4-inch TFT true color display screen has a resolution of 800 × 600, making the overall operation of the single machine convenient and durable.

The domestic industry is the first to adopt imported brushed stainless steel panels, stainless steel keyboards, and touch sensitive mice, overcoming the disadvantages of inflexible and easily damaged operation of trackball mice.

The power amplifier adopts high fidelity linear power amplifier, which ensures the accuracy of small current and the stability of large current.

Equipped with an independent dedicated DC auxiliary voltage source output to provide power to relays or protective devices that require DC working power.

◆ Can connect laptops and desktop computers for testing, using USB interface to communicate directly with PC.

◆ Equipped with GPS synchronization test function.

434B microcomputer relay protection tester

2、 Product Overview

Meet all on-site testing requirements. It can be used to test various traditional relays and protection devices, as well as various modern microcomputer protections, especially for transformer differential protection and backup automatic switching devices, making testing more convenient and efficient.

The APWR434B model has a standard four phase voltage and three-phase current output simultaneously, with a voltage of 125V/phase and a current of 40A/phase. The three-phase current can reach up to 120A in parallel. Among them, APWR434B is a built-in industrial control model, while APWR434 is a non industrial control model that can only be operated with an external laptop. The usage methods and technical parameters of these two models are completely identical.

All technical indicators fully meet the standards of DL/T624-1997 "Technical Conditions for Microcomputer based Test Devices for Relay Protection" issued by the Ministry of Electric Power.

Single machine independent operation, built-in high-performance industrial computer, with a main frequency of 300-600MHz and 128M memory, running Windows XP operating system.

The domestic industry is the first to adopt imported brushed stainless steel panels, stainless steel keyboards, and touch sensitive mice, overcoming the overall ease of operation and durability of trajectory machines.

The main control board adopts a DSP+FPGA structure and a 16 bit DAC output, which can generate a high-density sine wave of 2000 points per week for the base wave, greatly improving the quality of the waveform and enhancing the accuracy of the tester.

The power amplifier adopts high fidelity linear power amplifier, which ensures the accuracy of small current and the stability of large current.

◆ It uses a USB interface to communicate directly with the PC without any adapter cables, making it convenient to use.

◆ Can be connected to a laptop to run. Laptops and industrial computers use the same software, so there is no need to relearn the operating methods.

◆ Equipped with GPS synchronization test function. The device can be equipped with a built-in GPS synchronization card (optional) and connected to a PC through an RS232 port, enabling two testers to perform synchronous testing in different locations.

Equipped with an independent dedicated DC auxiliary voltage source output, with output voltages of 110V (1A) and 220V (0.6A) respectively, to provide power for relays or protection devices that require DC working power supply.

◆ It has software self calibration function, which avoids the need to open the chassis and adjust the potentiometer to calibrate accuracy, greatly improving the stability of accuracy.

434B microcomputer relay protection tester

3、 Technical parameters

◆ AC current source:

Phase current output (effective value): 0-40A/phase, accuracy 0.2%.

Three phase parallel output (effective value): 0-120A/Three phase in-phase parallel output.

Long term allowable operating value (effective value) of phase current: 10A.

Each phasez·uiHigh output power: 420VA.

Three phase parallel currentz·uiHigh output power: 900VA.

Triple currentz·uiMaximum output allowed working time: 10 seconds.

Frequency range: 0-1000Hz, accuracy: 0.001Hz.

Harmonic frequency: 2-20 times.

Phase: 0-360 °, accuracy: 0.1 °.

◆ DC current source:

Current output: 0- ± 20A/phase, accuracy 0.2%.

◆ AC voltage source:

Phase voltage output (effective value): 0-125V/phase, accuracy: 0.2%.

Line voltage output (effective value): 0-250V.

Phase voltage/line voltage output power: 75VA/100VA.

Frequency range: 0-1000Hz, accuracy: 0.001Hz.

Harmonic frequency: 2-20 times.

Phase: 0-360 °, accuracy: 0.1 °.

◆ DC voltage source:

Phase voltage output amplitude: 0- ± 150V accuracy: 0.2%

Line voltage output amplitude: 0- ± 300V

Phase voltage/line voltage output power: 90VA/180VA

◆ Switching terminal:

Switching input terminals: 8 pairs.

Empty contact: 1-20mA, 24V device internal active output.

Potential flip: 0-6VDC is a low level; 15-250VDC is a high level.

Switching output terminals: 4 pairs, air contact, breaking capacity: 110V/2A, 220V/1A.

Time measurement range:

Range 1ms-9999s, measurement accuracy 1ms.

◆ Volume and weight:

Volume 365 (mm) × 400 (mm) × 195 (mm), approximately 18Kg

◆ Power supply:

AC220V ± 10%, 50Hz, 10A.