Product Introduction
The UHV-370 Transformer Low-voltage Short Circuit Impedance Tester is designed for testing power transformers, both single-phase and three-phase, during delivery, overhaul, and commissioning. It helps identify defects such as winding displacement and deformation by comparing short circuit impedance with nameplate or factory values.

Product Features
1. Utilizes AC 220V power supply for testing transformer windings in both manual and automatic modes.
2. Capable of conducting both single-phase and three-phase tests.
3. Automatic completion of three-phase tests without reversing test lines.
4. No external voltage regulator needed for measurements.
5. Displays various parameters including impedance error, applied voltage/current, measured power, and more.
6. Measures zero-sequence impedance and related parameters simultaneously.
7. Supports both internal and external power supplies.
8. Features a 7-inch color touch LCD screen with English menu and a mini-printer for data printing.
9. Includes RS232 interface for data transfer to backend systems.
10. Stores up to 100 test records with time-indexed storage.
11. USB interface for data transfer to flash disks.
12. Automatic clock calibration.

Technical Parameters
- Voltage measurement range: 15V-500V
- Current measurement range: 0.5A-50A
- Accuracy: Voltage error < 0.2%, Current error < 0.2%, Power error ≤ ±0.5% (CosΦ>0.1), ≤ ±1.0% (0.05<CosΦ<0.1)
- Impedance measurement range: 1Ω-200Ω
- Working power supply: AC220V ± 10%
- Supply frequency: 50Hz ± 5Hz
- Operating temperature: -10-40℃
- Ambient humidity: ≤80%RH, without condensation
- Altitude: ≤1000 meters
- Dimensions: 400*340*195mm
- Total weight: 10kg.