Phase tester UHV-1201

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Product introduction
The UHV-1201 six-phase relay protection tester is a compact microcomputer-based test instrument designed to DL/T 624-2023. It provides flexible combinations of up to 6-phase voltage and 6-phase current outputs (expandable to 12-phase) for comprehensive relay protection verification including differential transformer tests and field injection for protection schemes.

Product features

• Versatile power output configuration
  • Standard 4-phase voltage (120 V/phase) and 3-phase current (120 A/phase); configurable to 6-phase voltage and 6-phase current
  • Fourth voltage channel (Ux) configurable as 3U0 or custom voltage
• Intuitive user interface
  • Integrated trackball and optimized keyboard with large TFT display (Chinese Windows OS)
  • Ready-to-use at startup for simplified field operation
• Dual control modes
  • Standalone panel operation
  • External PC control with full feature parity
• High-fidelity signal generation
  • DSP-controlled outputs and modular linear (non-switching) amplifiers to preserve waveform integrity and reduce HF/MF interference
  • Fundamental frequency range 0–1000 Hz, harmonic support 1–20
• Portable design and protection
  • Compact dimensions 375×350×180 mm, unit weight 17 kg; fast startup for field testing
  • Thermal management, soft-start circuitry and hardware/software protections with automatic fault diagnosis
• Comprehensive test software
  • Automated verification procedures, protection setting checks, fault simulation and replay, real-time logging, vector display and instant report generation
• Auxiliary DC and connectivity
  • Dual adjustable DC auxiliary outputs 110 V/220 V and independent supply for external devices
  • Dual USB and RS232 interfaces; support for external keyboard/mouse and PC communication

Product parameters
Model: UHV-1201
Manufacturer: Wuhan UHV Power Technology Co.,Ltd
Current channels: standard 6 phases
Voltage channels: standard 6 phases
AC current output range: 30 A/phase (or 180 A with six parallel)
DC current output range: ±10 A/phase
AC voltage output range: 0–120 V AC/phase
DC voltage output range: 0–±160 V DC/phase

AC current output
6-phase per phase (RMS): 0–30 A, accuracy 0.2
3-phase per phase (RMS): 0–60 A
6-phase parallel (RMS): 0–180 A
Long-term allowable phase current (RMS): 10 A
Max phase current output power: 300 VA
Max 6-phase parallel output power: 1000 VA (allowed at max for 10 s)
Frequency range (fundamental): 0–1000 Hz
Harmonic support: 1–20

DC current output
Output: 0–±10 A/phase, accuracy 0.5
Maximum output load voltage: 20 V

AC voltage output
Phase voltage (RMS): 0–120 V, accuracy 0.2
Line voltage (RMS): 0–240 V
Phase/line output power: 80 VA / 100 VA
Frequency range: 0–1000 Hz
Harmonic support: 1–20

DC voltage output
Phase amplitude: 0–±160 V, accuracy 0.5
Line amplitude: 0–±320 V
Phase/line DC output power: 70 VA / 140 VA

Switching & I/O
8 switch inputs: null-contact 1–20 mA, 24 V; potential contact mode 0: 0–+6 V; mode 1: +11–+250 V
4 pairs switching outputs: DC 220 V/0.2 A; AC 220 V/0.5 A

Time measurement & mechanical
Time measurement range: 0.1 ms – 9999 s
Measurement accuracy: < 0.1 ms
Dimensions: 375 × 350 × 180 mm
Unit weight: 17 kg

Technical specifications

• Model: UHV-1201
• Outputs: up to 6-phase voltage and 6-phase current (expandable to 12-phase)
• AC current per phase: 0–30 A RMS (accuracy 0.2)
• 6-phase parallel AC current: up to 180 A RMS
• DC current per phase: 0–±10 A (accuracy 0.5)
• AC voltage per phase: 0–120 V RMS (accuracy 0.2)
• DC voltage per phase: 0–±160 V (accuracy 0.5)
• Frequency range: 0–1000 Hz; harmonics: 1–20
• Interfaces: Dual USB, RS232; support for external keyboard/mouse and PC
• Switching I/O: 8 inputs, 4 pairs outputs
• Dimensions: 375×350×180 mm; Weight: 17 kg