Manufacturer of microcomputer relay protection calibrator

Product Overview

The WJC-3000A three-phase microcomputer relay protection tester is a new type of miniaturized microcomputer relay protection tester developed by referring to the DL/T624-2010 "Technical Conditions for Microcomputer Relay Protection Test Devices" issued by the Ministry of Electric Power, extensively listening to user opinions, summarizing the advantages and disadvantages of similar products in China, and fully utilizing modern advanced microelectronics technology and devices. This microcomputer relay protection tester adopts an advanced structure that operates independently as a single machine or can also be connected to a laptop for operation. The instrument host adopts DSP+FPGA structure, true 16 bit DAC output, built-in new modular high fidelity linear high-power amplifier, built-in 8.4-inch TFT true color display screen with a resolution of 800 × 600, and high-end industrial keyboard and mouse. Windows XP operating system, features *. Small size and high precision.Manufacturer of microcomputer relay protection calibratorIt has the performance and advanced functions of a large testing instrument, as well as the advantages of a small and flexible testing instrument, easy operation, and high reliability, with a high cost performance ratio. It is a handy tool for relay protection workers.

It can calibrate various relays (such as current, voltage, inverse time limit, power direction, impedance, differential, low cycle, synchronous, frequency, DC, intermediate, time, etc.) and microcomputer protection, and simulate various complex instantaneous and conversion faults for whole group testing.

Reference standard: DL/T624-2010 "Technical Conditions for Microcomputer Relay Protection Test Equipment"

Product Features:

Four channel AC/DC voltage output, three channel AC/DC current output, eight channel input, four channel output, independent auxiliary DC power supply.

Relay testing: capable of testing various commonly used relays such as voltage, current, power, frequency, synchronization, frequency, impedance, overcurrent, intermediate and time relays.

Differential test: testing various differential protections composed of principles such as proportional braking, harmonic braking, DC magnetic assistance, and quick break.

Fault simulation: simple fault simulation, complex fault simulation, polymorphic simulation, system oscillation, fault reproduction, advanced simulation, four state simulation.

Impedance characteristics: Test impedance characteristics such as circle, quadrilateral, precision voltage, precision current, demagnetization, motion, memory, etc.

Distance protection: whole set of step characteristics, zero sequence current characteristics, power frequency variation distance, whole set transmission test.

Programmable power supply: power generator, harmonic generator, triangular wave, square wave generator, amplitude modulation phase shifter.

Automatic devices and meters:Manufacturer of microcomputer relay protection calibratorMicrocomputer line protection, synchronization device, low cycle load shedding, millisecond counter, power meter, backup automatic switching.

Product Parameters:

1 AC/DC current source:

1.1 Communication:

1.1.1 Maximum output current (RMS): 3 × 30A/phase

1.1.2 Three phase parallel connection: 90A.

1.1.3 Maximum output power: ≥ 360VA/phase.

1.1.4 Three current sources with a shared neutral point.

1.1.5 Independent adjustment of output current amplitude, frequency, and phase for each phase.

1.1.6 Output accuracy: 0.1%+0.01% range (0.2-30A),<1mA (1-200mA).

1.1.7 Resolution: 1mA.

1.1.8 The current rise and fall time is less than 100 µ S.

1.1.9 Current: 0~30A.

1.1.10 Automatic detection of overload or distortion.

1.1.11 Output frequency: 0~1KHz.

1.1.12 Amplitude frequency characteristics: The amplitude variation within the range of 10-1000Hz is ≤± 0.5%~2%.

1.1.13 Parallel use of output current sources: When the current exceeds the maximum output current of each phase of the tester, three-phase current sources with amplitude can be used in parallel. When used in parallel, the output of each phase should generally be equal and the phase should be the same. When two phases are connected in parallel, the total output is 2 times single-phase current; When three phases are connected in parallel, the total output is 3 times single-phase current.

1.1.14 Series use of output current source: When the output power of the current amplifier is required to be greater than the maximum output power of each phase current, the tester current source can be used in series, such as Ia and Ib, with equal amplitude and phase difference of 180 °, and the output power can be doubled.

1.2 DC:

1.2.1 DC current output 3 × 0~15A/phase

1.2.2 Accuracy: 0.5%.

1.2.3 Resolution: 1mA.

1.2.4 Capacity: 250W continuous operation.

1.2.5 Overload automatic protection.

2 AC/DC voltage sources: