Handheld Turns Ratio and Winding Resistance Meter | TWR-H Series

Handheld Turns Ratio and Winding Resistance Meter | TWR-H Series

Handheld Turns Ratio and Winding Resistance Meter – Overview

This handheld, battery-operated, fully automatic test set is designed for turns ratio, phase shift, excitation current of transformers, and winding resistance measurement of transformers and other inductive objects. It can also perform demagnetisation of transformers, motors, and generators. The device generates true DC ripple-free currents. Both the injection of the current and the discharge of energy from transformer magnetic circuit are automatically regulated.

Handheld Turns Ratio and Winding Resistance Meter – Features

  • Unique handheld instrument on the market
  • Performs 3 different tests: Turns ratio, Winding resistance, Demagnetisation
  • Single-phase test voltage up to 40 V AC
  • Two DC current sources: Test current up to 2 A DC for transformer HV side, Test current up to 10 A DC for transformer LV side
  • Extremely lightweight – only 1.4 kg / 3.1 lbs
  • Battery-powered
  • Tests single-phase and three-phase transformers

Description

Handheld Turns Ratio and Winding Resistance Meter | TWR-H Series

Technical Data
Battery
Type: Li-Ion, 14.8 V, 2.9 Ah
Rechargeable
User replaceable
Power Supply Adapter
Input voltage: 90 – 264 V AC, 50/60 Hz
Output voltage: 12-19 V DC
Output current: 2 A DC
Output AC Source
Voltage: 40 V, 10 V, 1 V
Output DC Source 1
Current: 2 A, 1 A, 500 mA, 100 mA, 50 mA, 10 mA, 5 mA
Output DC Source 2
Current: 10 A, 5 A, 2 A, 1 A, 500 mA
Turns Ratio Measurement Measurement range:
0.8 – 20 000 @40 & 10 V AC
0.8 – 4 000 @1 V AC
Resolution: 5 digits
Typical accuracy: @40 V AC
0.8 – 999: ±0.1%
1 000 – 3 999: ±0.15%
4 000 – 14 999: ±0.25%
15 000 – 20 000: ±0.3%
@10 V AC
0.8 – 999: ±0.2%
1 000 – 3 999: ±0.2%
4 000 – 14 999: ±0.25%
15 000 – 20 000: ±0.3%
@1 V AC
0.8 – 999: ±0.2%
1 000 – 4 000: ±0.2%
Excitation Current Measurement
Measurement range: 0 – 1 A
Resolution: 0.1 mA
Typical accuracy: ±(1% rdg + 0.5 mA)
Phase Angle Measurement
Measurement range: 0 – 360º
Resolution: 0.01º
Typical accuracy: ±0.06º
Winding Resistance Measurement
Measurement range: 1 µΩ – 3 kΩ
Range / resolution:
1 µΩ – 9.999 mΩ 1 µΩ
10.00 mΩ – 99.99 mΩ 0.01 mΩ
100.0 mΩ – 999.9 mΩ 0.1 mΩ
1.000 Ω – 9.999 Ω 0.001 Ω
10.00 Ω – 99.99 Ω 0.01 Ω
100.0 Ω – 999.9 Ω 0.1 Ω
1.000 kΩ – 3.000 kΩ 1 Ω
Typical accuracy: ±(0.5% rdg + 0.5% F.S.)
Display
LCD 4.8” display, 240 x 128 pixels
Interface Bluetooth
Internal Memory
100 transformer records
Each record contains up to 30 results
Warranty
3 years + additional 1 year upon registration on DV Power official website

Handheld Turns Ratio and Winding Resistance Meter | TWR-H Series

Brand

DV Power

IBEKO Power AB, with headquarters in Stockholm (Sweden) and best known through the brand ”DV Power”, has developed radically light and ingenious test solutions for transformers, circuit breakers, and batteries. Founded by a group of engineers with deep knowledge and experience in the power electronics technology area. Sold worldwide – in over 100 countries. Their success is solely based on extensive research, development, and fast commercial application.

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