VIND-702 Microprocessor Relay Protection Set

VIND-702 Microprocessor Relay Protection Set
VIND-702 Microprocessor Relay Protection Set - 图片 2
VIND-702 Microprocessor Relay Protection Set - 图片 3
VIND-702 Microprocessor Relay Protection Set - 图片 4

VIND-702 Microprocessor Relay Protection Set

The VIND-702 is a portable, high-precision test system designed for commissioning and maintaining power system protection relays. It features independent or PC-controlled operation, delivering accurate AC/DC current and voltage with low distortion. The unit supports comprehensive tests for overcurrent, differential, distance, and frequency relays, including complex harmonic and sequence simulations.

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Product Overview

The VIND-702 is a state-of-the-art, portable microprocessor-based test system engineered for the commissioning, maintenance, and troubleshooting of protective relays in power systems. It masterfully combines the comprehensive functionality of large benchtop test sets with the compactness of handheld field instruments. Utilizing a high-speed Digital Signal Processor (DSP), a true 16-bit Digital-to-Analog Converter (DAC), and a high-fidelity linear power amplifier, the VIND-702 delivers precise, low-distortion signals. The unit supports both independent operation via a built-in LCD and rotary mouse, and advanced automated testing when connected to a PC, making it an indispensable tool for modern power system diagnostics.

Technical Specifications

Current Output
  • AC Phase Current: 0–40 A RMS (Continuous 10 A)
  • AC Parallel Current: 0–120 A RMS (Max 8 seconds)
  • DC Phase Current: 0 to ±20 A
  • Max Power: 450 VA per phase / 1200 VA parallel
  • Frequency: 20–1000 Hz (Fundamental), Harmonics 1st to 9th
Voltage Output
  • AC Phase Voltage: 0–130 V RMS
  • AC Line Voltage: 0–260 V RMS
  • DC Phase Voltage: 0 to ±180 V
  • DC Line Voltage: 0 to ±360 V
  • Output Power: 80 VA / 160 VA (Phase/Line)
General & Accuracy
  • Binary I/O: 7 Input channels (Auto-sensing), 2 Output channels
  • Timer: 0.1 ms – 9999 s
  • Accuracy (AC): <0.2% ±0.1% FS (Current/Voltage), <0.5° (Phase)
  • Distortion: <0.5% THD
  • Display: 320×240 Graphic LCD
  • Dimensions: 450 × 360 × 235 mm
  • Weight: 15 kg

Key Features

  • High-Precision Amplification: Equipped with a high-fidelity linear power amplifier and a 16-bit DAC, ensuring low distortion (<0.5%) and high accuracy (<0.2%) for reliable relay testing.
  • Dual Operation Modes: Offers flexible workflow options—operate independently using the intuitive rotary mouse and built-in LCD, or connect to a Windows laptop via USB for advanced automated testing and report generation.
  • Comprehensive Protection Testing: Features dedicated templates for standard protection routines including Overcurrent (50/51), Differential (87), Distance (21), Frequency (81), and Synchronization (25) relays.
  • Advanced Signal Generation: Capable of simulating complex fault scenarios with multi-state sequence output (Pre-fault, Fault, Post-fault) and harmonic superposition (1st to 9th) up to 1000 Hz.
  • Robust & Portable Design: Housed in a rugged case with integrated cooling, designed for field use in harsh environments with a wide operating temperature range (-10°C to +50°C).

Applications

  • Power System Commissioning: Essential for the initial start-up and verification of new substations and transmission lines.
  • Preventive Maintenance: Used for routine annual checks of protection relays to ensure system reliability and safety.
  • Fault Diagnosis & Troubleshooting: Ideal for locating and diagnosing malfunctioning relays or complex protection scheme logic errors.
  • Research & Development: Supports the development and testing of new relay algorithms and protection schemes in laboratory environments.
  • Educational Training: Provides a practical platform for training engineers on power system protection principles and relay operation.

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