Winding Resistance for the Field

WR50-12: 50 Amp, 2 Channel Winding Resistance Meter with Demagnetization and Discharge

Description

The winding resistance system with a most advanced demagnetizing circuit.

It is designed for a high degree of accuracy for the measurement of very low resistance of any inductive load. The results are reported on the easy-to-read color LCD display and can be stored or printed.

Unique Measuring Technique: This newly designed technique of measurement incorporates a high precision measurement circuit, a unique power source, and the fastest discharge on the market.

Operation: The WR series of instruments apply a preset current level, selected by the user, from 0.025A to 50A.

Compact Design: The WR50 is a lightweight system, designed with its own rugged waterproof field case.

Advanced Protection: Upon powering on, the system initializes itself with a self-calibrating, circuit checking sequence. If any problems are detected during initialization or operation, the operator will be notified immediately. The system constantly monitors the condition when turned on. The WR series has extensive protection built in to the circuitry.

Features

Pure, filtered DC power source for the highest accuracy readings
Highest Accuracy and Precision of any high current test system
Complete, automatic calibration system and system diagnostics
Automatic measurements of resistance from 0.00 µΩ … 100 kΩ
Demagnetizing Circuit (Advanced design)
Microprocessor-based system with internal storage for over 10,000 test results
Data exchange via USB-Key or USB / RS Connection
Printing and storing of test results while the test system is measuring
Temperature channels with automatic resistance correction
Automatic, high efficiency cooling system to dissipate internal heat
Automatic shut off for over-temperature condition
Simple-to-operate color LCD touch screen with backlight
Panel-mounted Emergency Stop Switch
Mounted in a rugged case for field testing
Fully automatic cooling curve analysis (option AHRT-01)
Fastest discharge time on the market
5-Year standard warranty

Accuracy

Current Range	Measuring Range	Accuracy	Resolution
30 – 50A	0.00 µΩ … 1.3 Ω	± 0.1% Rdg ± 0.05 µΩ	5 Digits or 0.05 µΩ
15 – 30A	0.0 µΩ … 3.3 Ω	± 0.1% Rdg ± 0.1 µΩ	5 Digits or 0.1 µΩ
8 – 15A	0.0000 mΩ … 6.3 Ω	± 0.1% Rdg ± 0.2 µΩ	5 Digits or 0.2 µΩ
3 – 8A	0.0000 mΩ … 16.7 Ω	± 0.1% Rdg ± 0.5 µΩ	5 Digits or 0.5 µΩ
1 – 3A	0.000 mΩ … 47.2 Ω	± 0.1% Rdg ± 1 µΩ	5 Digits or 1 µΩ
0.7 – 1A	0.000 mΩ … 71.4 Ω	± 0.1% Rdg ± 2 µΩ	5 Digits or 2 µΩ
0.3 – 0.7A	0.000 mΩ … 167 Ω	± 0.1% Rdg ± 5 µΩ	5 Digits or 5 µΩ
0.1 – 0.3A	0.00 mΩ … 500 Ω	± 0.1% Rdg ± 10 µΩ	5 Digits or 10 µΩ
25 – 100 mA	0.00 mΩ … 2 kΩ	± 0.1% Rdg ± 20 µΩ	5 Digits or 20 µΩ
< 25 mA	2 kΩ … 10 kΩ	± 0.2% Rdg ± 200 mΩ	5 Digits or 200 mΩ
< 25 mA	10 kΩ … 100 kΩ	± 0.8% Rdg ± 20 Ω	4 Digits or 20 Ω

Resistance Range:	0.00 µΩ to 100 kΩ
Inductance Range:	0 to 1,500 Henry
Temperature:	Operating: -10°C to 60°C (14ºF to 140ºF) Storage: -20°C to 70°C (-4ºF to 158ºF)

See Instruction Manual for more Parameters. Specifications subject to improvement at any time.

Specs

Size: L: 521 mm (20.5″) W: 432 mm (17″) H: 216 mm (8.5″)
Weight: 17.2 kg (37.9 lbs.)
Input Power: 90 to 264 VAC (1.5 kW max.), 47…63 Hz, automatic ranging
Output Voltage: 0 to 50V DC
Test Current: User Selectable: 25 mA … 50 A
Display: Color LCD with a backlight and a touch screen
Front Panel: Sealed, anodized
Interface: 2 USB 2.0 (1 host, 1 device) and 9 Pin RS-232 serial
Memory Storage: Internally stores more than 10,000 test results
Temperature: Operating: –10°C to 60°C (14ºF to 140ºF), Storage: –20°C to 70°C (-4ºF to 158ºF)

See Instruction Manual for more Parameters. Specifications subject to improvement at any time.

Accessories

2042A-05001: Current Cable, Positive – 10m (32 ft.)
2042A-05002: Current Cable, Negative – 10m (32 ft.)
2042A-05003: Potential Cable CH 1, Positive – 10m (32 ft.), blue
2042A-05004: Potential Cable CH 1, Negative – 10m (32 ft.), blue
2042A-05005: Potential Cable CH 2, Positive – 10m (32 ft.), green
2042A-05006: Potential Cable CH 2, Negative – 10m (32 ft.), green
2040A-05007: Jumper Cable – 10m (32 ft.)
2021A-05009: Power Cord – 7.62m (25 ft.)
2040A-05004: Ground Lead – 10m (32 ft.)
1004A-27003: External USB Drive
2040A-08003: Touch Screen Stylus
1003A-37001: A-B USB Cable – 3m (10 ft.)
2040A-03004: Cable Bag with Shoulder Strap
2040X-18002: Paper Refill for Printer – 5 rolls
2021X-07001: Spare Fuse Set, Fast-Acting 10A (Qty. 5)
2042A-02001: Instruction Manual
2042X-10001: Certificate of Accuracy

Options

2040N-05003: Cable Extension Set — 10m (32 ft.)
2021N-26001: Temperature Probe – 10m (32 ft.)
2042N-11001: Heat-Run Curve Analysis Software (AHRT-01)
WR50-12R: Rackmount Version
2042N-15001: Annual Warranty Extension

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