Relay Protection Microcomputer Tester/Test Equipment With Digital Signal Processor

Model NO.: GDJB-902A
Trademark: HV Hipot
Transport Package: Carton or Wooden Case
Specification: ISO, SGS
Origin: Wuhan, China
HS Code: 9030820000
Product Description

The Relay Protection Microcomputer Test Device is a crucial tool in ensuring the safe and reliable operation of power systems. It is specifically designed for use in the fields of microcomputer protection, relay testing, excitation measurement, and fault recording. This device is ideal for engineers and technicians who require accurate and efficient testing of protective relays and other electrical components. Key Features
  • High-Performance Industrial Control Computer
    Equipped with a high-performance industrial control computer, this tester runs the Windows operating system directly. It features an 8.5" TFT color LCD screen, a tracking ball, and an optimized keyboard on the front panel, eliminating the need for external peripherals. The back panel includes USB, Ethernet, and serial ports for easy data transfer, communication, and software updates. The user-friendly interface makes it simple to operate, even for those with minimal computer knowledge.
  • Digital Signal Processor (DSP) Technology
    The device uses a high-speed digital signal processor as its core, enabling precise waveform generation across all phases. With 32-bit double-precision arithmetic, it can produce highly accurate waveforms. The compact design ensures short data transmission distances, improving waveform output quality and overcoming limitations of traditional test controllers.
  • D/A Conversion and Low-Pass Filtering
    High-precision D/A converters ensure accurate and linear current and voltage outputs. The high-density sampling points result in high-fidelity waveforms with minimal harmonic distortion. This allows for excellent transient response and frequency characteristics, making it ideal for phase-shifting and harmonic superposition tasks.
  • Voltage and Current Amplifier System
    The device employs high-performance linear amplifiers to output a wide range of waveforms, from DC to complex harmonics and fault transients. The output is clean and smooth, minimizing interference with nearby equipment. It also offers robust protection against overheat, overcurrent, and short circuits, with built-in safety measures to prevent damage during extended high-current operations.
  • Digital Input and Output Channels
    This device provides 10 digital input channels and 8 digital output channels. It supports both open contacts and 0–250V potential contacts, allowing for precise timing measurements of switch actions. The isolated digital input ensures safe and accurate testing, while the relay-based output offers flexibility for various applications.
  • Adjustable DC Power Supply
    An adjustable DC power supply is available on the rear panel, offering 110V and 220V outputs for on-site testing. Rated at 1.5A, it serves as a backup power source for protective devices or switch loops. In case of overload or short circuit, a fuse will blow, and replacement is straightforward.
Technical Specifications
AC Current Output
Phase Current Output (RMS) 0–40A, Accuracy: 0.2%
3-Phase Parallel Current Output (RMS) 0–120A
Long-Term Phase Current 10A
Maximum Phase Current Output Power 420VA
Maximum 3-Phase Parallel Current Output Power 900VA
Maximum Permitted Time for 3-Phase Parallel Output 10 seconds
Frequency Range (Fundamental) 20–1000Hz
Harmonic Order 1–20
DC Current Output
Current Output 0–±10A / Phase, 0–±30A / 3-Phase Parallel
Output Accuracy 0.5%
AC Voltage Output
Phase Voltage Output (RMS) 0–120V, Accuracy: 0.2%
Line Voltage Output (RMS) 0–240V
Phase/Line Voltage Output Power 80VA / 100VA
Frequency Range (Fundamental) 20–1000Hz
Harmonic Order 1–20
DC Voltage Output
Phase Voltage Output Range 0–±160V, Accuracy: 0.5%
Line Voltage Output Range 0–±320V
Phase/Line Voltage Output Power 70VA / 140VA
10 Digital Inputs & 8 Digital Outputs
Time Measurement Range 0.1ms – 9999s, Accuracy: < 0.1ms
Dimensions & Weight 400×360×160mm, 18kg
Operating Temperature -10°C to +50°C

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