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Current calibrator UHV-901
voltageelectrical parametersuniversal

Current calibrator - UHV-901 - Wuhan UHV Power Technology Co.,Ltd. - voltage / electrical parameters / universal
Current calibrator - UHV-901 - Wuhan UHV Power Technology Co.,Ltd. - voltage / electrical parameters / universal
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Go to the Wuhan UHV Power Technology Co.,Ltd. website for more information

Characteristics

Physical quantity
voltage, current, electrical parameters
Applications
universal, for transformers, for voltage transformer (VT)
Options
portable, high-precision, compact, reference value, with integrated data logger, rugged
Temperature

Min.: 0 °C
(32 °F)

Max.: 40 °C
(104 °F)

Humidity range

Min.: 0 %

Max.: 85 %

Description

Overview

  • The UHV-901 is an integrated field and laboratory calibration tester for current transformers (CT) and potential/voltage transformers (PT/VT). It performs high-accuracy ratio and phase measurements with a built-in 0.02-class reference standard and an 800×600 LCD touchscreen (WINCE) for guided operation, on-site data storage and USB export.


Key features

  • Integrated solution: Small-signal measurement technology enables complete CT/PT error testing without external standard transformers, boosters or load boxes; includes a built-in 0.02-class reference (equivalent to 0.05S-class).
  • Advanced testing capabilities: Wide measurement range (1%–200%, including S-class CTs); ratio and phase error measurement at arbitrary load points; automatic polarity and ratio detection for known and unknown transformers; VT testing per national standards (20%–120%).
  • Smart operation: 800×600 LCD touchscreen with wiring guidance, auto-wiring detection and error alerts, local data storage and USB export; shock-resistant casing; portable weight <6 kg and compact dimensions (472×355×168 mm).
  • Efficient workflow: Near-power-frequency testing to reduce interference, instant pass/fail results and one-click national-standard report generation.


Applications

  • Field calibration of metering and metering devices
  • Verification of standard and non-standard CTs and PTs
  • Identification and parameterization of unknown transformers


Technical specifications

  • CT section: CT ratio range: 5A/5A ~ 25000A/5A (5A/1A ~ 5000A/1A); turn ratio error ±0.2%. CT error measurement range: 5A/5A ~ 5000A/5A (5A/1A ~ 5000A/1A). Tested CT accuracy classes: 1.0, 0.5, 0.5S, 0.2, 0.2S. CT error accuracy (reference): 0.02 level.
  • PT section: PT ratio range: full-range measurement (electromagnetic type) ±0.2%. PT error measurement range (primary/secondary examples): primary voltage 3–220 kV (non-standard primary voltages acceptable). Secondary examples: 3kV/100V, 6kV/100V, 6.3kV/100V, 10kV/100V, 10.5kV/100V, 13.8kV/100V, 15kV/100V, 15.75kV/100V, 18kV/100V, 20kV/100V, 35kV/100V, 66kV/100V, 110kV/100V, 220kV/100V. PT power factor range: 0.0–1.0. PT error accuracy (reference): 0.05 level.
  • DC resistance measurement: 0.0–0.1 Ω ±3%; 0.1–50 Ω ±1%.
  • Operating environment: temperature 0–40 °C; humidity <85% at 25 °C.
  • Power consumption: 30 W (idle), 150 W (working).
  • Weight: 6.0 kg. Dimensions: 472 mm × 355 mm × 168 mm.
  • User interface: 800×600 LCD touchscreen (WINCE) with wiring guidance, auto-wiring detection, local storage and USB export.

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.