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Red handheld tester unit with three-channel wireless clamps and high-voltage insulating rods

ETCR

ETCR 9500C Three-Channel Wireless HV CT Ratio Tester

SKU CH-MSR7-NTKE4 MPN 9500C

Three-channel wireless HV CT ratio tester measures primary and secondary current, transformation ratio, error, phase angle, polarity.

  • Labor warranty1 Year
  • Product typeTest Equipment
  • Color and finishRed
  • Number of items1 pack
  • Sold asBox
  • Parts warranty3 Years
  • Three-channel wireless HV CT ratio tester measures primary and secondary current, ratio, error, phase angle, polarity and phase sequence
  • Wireless signal penetrates walls with direct-line transmission distance of about 30m
  • Designed for on-line testing of current and voltage transformers in distribution systems under 70kV
  • Includes high-voltage detector, three-channel low-voltage secondary current clamps, principal machine.
  • Widely applicable to transformer substations, power plants, electrical inspection departments and industrial enterprises

Three-Channel Wireless HV CT Ratio Tester

The ETCR 9500C is a specialised test instrument for on-line measurement of current and voltage transformers in distribution systems up to 70 kV. It targets utility engineers and field technicians who need to verify transformation ratio, error, phase angle difference, polarity and phase sequence without de-energising equipment.

Wireless Transmission and Accessory Kit

Wireless signal transmission penetrates wall obstacles with a direct-line range of about 30 m, allowing the high-voltage detector and three low-voltage secondary current clamps to operate away from the principal machine. The supplied monitoring software and communication link enable data logging and analysis on site, while high-voltage insulating rods provide safe coupling to live conductors.

Measurement Scope and Limits

The tester comfortably handles primary and secondary current, ratio, error, phase (group) angle, polarity, phase sequence and leakage detection on transformers rated at 10 kV and 35 kV within the 70 kV system ceiling. It is not suited for networks above 70 kV or for applications requiring continuous online monitoring beyond the wireless link’s 30 m reach.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $1,031.99
Pricier than about 92% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameETCR
Model name9500C
Product typeTest Equipment
Color and finishRed
In the box
Number of items1 pack

Questions about this item

How often do the three low-voltage secondary current clamps need recalibration?

The supplier specifies a three-year parts coverage period for the clamps and main unit.

What voltage level limits continuous on-line measurement sessions?

The tester is designed for distribution systems up to 70 kV, covering 10 kV and 35 kV networks.

How much heat does the main unit generate during an all-day field survey?

Wireless transmission up to 30 m line-of-sight keeps the main unit at a distance from the high-voltage detector, limiting heat exposure.

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