WR14

Winding Resistance Meter 15Amps, 2 Channels

Product Number: 70048
  • Battery and mains operated
  • Demagnetisation and discharge
  • Color touch screen
Raytech offers a 2 year standard warranty and 100% Swiss quality
Product variant
WR14
Field

Description

The Raytech WR14 is a Winding Resistance meter system specially designed for high precision DC winding resistance measurement of high inductive windings such as large power transformer windings. It can also be used for precisely diagnosing and for preventive maintenance. Many power transformer’s faults such as shorted turns, tap changer problems and loose connections can be detected precisely.


For maximum mobility, the WR14 is battery operated and very lightweight. It includes also special tools such as advanced transformer core demagnetizing, temperature rise measurement and analysis (optional), and automatic temperature correction using up to 2 temperature probes.


The WR14 can inject current to both high voltage and low voltage side using the jumper cable provided, and resistance measurement can be performed simultaneously using two separate measurement channels.

Features

Measurement Methods

  • Large DC winding resistance measurements range from very low values 0.00µΩ up to 100kΩ 
  • Advanced transformer core demagnetization
  • Fully automatic cooling curve analysis (option AHRT 01)

Additional Features

  • Lightweight and battery-operated
  • Adjustable output current between 25mA and 15A
  • Fast charge and discharge of high inductive loads up to 1500 Henry
  • Two measuring channels which enable measuring low voltage and high voltage sides simultaneously
  • Complete automatic calibration system and system diagnostics
  • 2 temperature channels for automatic temperature correction of measured resistance
  • Pure filtered DC Power source for the highest accuracy readings

User Interface and Data Management

  • User-friendly user interface
  • Easy storage and printing of test results while the test system is measuring
  • Test object Profile creation, import and export
  • Plot the measurement results as a function of tap or time on display
  • Data exchange via USB-Key, serial cable and USB cable
  • Report generation in various formats
  • Full remote-control option from T-Base Pro PC software, or custom code by using Command Set

Durability and Support

  • The enhanced smart heavy-duty protection system
  • Software and firmware update
  • Raytech technical support
  • 2 years standard warranty

Specifications

Area of use:

Portable to use indoor and outdoor including heavy industrial electromagnetic environments

Enclosure:

Industrial high-impact plastic case

Supply:

IEC 60320, C13/C14 mains connector, CAT II

Battery:

Lithium-Ion battery, 14.8V/ 6Ah

Absolute input voltages:

90-264 VAC @ 47-63Hz

Consumption power:

Max. 150VA

Output power:

Max. 90W

Test current user selectable:

25mA-15ADC

Max. test voltage:

30VDC

Display:

5.7" TFT Color LCD

Input devices:

Touch screen, support mouse and keyboard

Interfaces:

2 USB 2.0 full speed (1 host, 1 device) and 9 Pin RS232 serial

Internal memory storage:

10000 test results

Printer:

Internal 1.9" thermal printer, support external printer direct connection

Operating temperature:

-10°C (14°F) to +55° C (131°F)

Storage temperature:

-20°C ( -4°F) to +70°C (158°F)

Degree of protection (closed door):

IP67, dust-tight and water immersion up to a 1-meter depth

Size:

L: 470 mm (18.5”) W: 357 mm (14.1”) H: 176 mm (6.9”)

Weight (instrument):

9.4 kg (20.6 lbs.)

See Instruction Manual for more Parameters

Specifications are subject to change without notice

 

Accuracy

Measurement parameters

Current range

Measuring range

Accuracy

Resolution

10-15 A

0.00 µΩ ... 1 Ω

± 0.1% Rdg ± 0.1 µΩ

5 Digits or 0.05 µΩ

5-10 A

0.0 µΩ ... 3 Ω

± 0.1% Rdg ± 0.2 µΩ

5 Digits or 0.1 µΩ

1-5 A

0.0000mΩ ... 15 Ω

± 0.1% Rdg ± 0.5 µΩ

5 Digits or 0.5 µΩ

0.5-1 A

0.000 mΩ ... 30 Ω

± 0.1% Rdg ± 2 µΩ

5 Digits or 1 µΩ

0.1-0.5 A

0.000 mΩ ... 300 Ω

± 0.1% Rdg ± 5 µΩ

5 Digits or 2 µΩ

25-100 mA

0.00 mΩ ... 1200 Ω

± 0.1% Rdg ± 20 µΩ

5 Digits or 10 µΩ

<25 mA

1.2 kΩ ... 10 kΩ

± 0.1% Rdg ± 100 mΩ

5 Digits or 200 mΩ

<25 mA

10 kΩ ... 100 kΩ

± 0.5% Rdg ± 10 Ω

4 Digits or 20 Ω

 

Resistance range

0.00 µΩ to 100 kΩ

 

In the box

USB Memory Stick
Standard Cable Bag
Current Cables for WR-14
2x 5m
Potential Cables for WR14 CH 1
2x 5m
Potential Cables for WR14 CH 2
2x 5m
Jumper Cables for WR-14 and WR-14-R
1x 5m
Power Cord
Instruction Manual - WR-14/WR-50
Software T-Base Pro
Powerful Software for Remote Control, Data Exchange and Analysis
2 Paper Rolls

Optional items

TP-01
External Temperature Probe 10m
TP-02
2 External Temperature Probes 2x 10m
WRO-202
DC Car Adapter
WRO-402
10m Cable Set 2x10m Current, 4x10m Potential Cables, 1x10m Jumper Cable
AHRT-01
Automatic Heat Run Test Software
Software T-Base Pro Extension Remote
Remote control
Software T-Base Pro Extension Sequence
Full automatic test sequences

Downloads

Firmware WR

Category:
Firmware
Release:
3.6.1.0
Publish Date:
22.12.2023
Attachment Size:
2 MB
Description:

This Firmware is valid for the following products:

WR14, WR14 R, WR50-1x, WR50-1xR, WR100-12R, WR100-13R

The Firmware has integrated Transformer profiles, which can be very helpful. If you don't want to use them, go into the Setup on the instrument and deselect "Use Profiles" or download the old firmware version 2.7.12.0.

Installation:
recommended
Additional Document: raytech-firmwareupdate-wr.pdf

Flyer WR-14

Category:
Flyer
Release:
15.13
Publish Date:
26.04.2020
Attachment Size:
1 MB
Description:

Short overview about the WR-14 and WR-14 R

Command Set WR-xx

Category:
Command Set
Release:
3.02
Publish Date:
26.04.2020
Attachment Size:
391 KB
Description:

This is a summary of the commands to remote control the WR14, WR14R, WR50-1x, WR50-1xR, WR100-12R, WR100-13R over the RS232 or USB interface.

Instruction Manual WR-XX- Field

Category:
Instruction Manual
Release:
3.03
Publish Date:
18.04.2023
Attachment Size:
9 MB
Description:

Instruction Manual for the Winding Resistance Meters in the field case for the following types:

WR14, WR50-12, WR50-13

Leaflet Temperature Probe TP 01

Category:
Leaflet
Release:
1.00
Publish Date:
27.04.2020
Attachment Size:
68 KB
Description:

This is a short description about the Temperature Probe TP 01 with technical specification.

Quick Start Guide SDK WRxx

Category:
Command Set
Release:
1.00
Publish Date:
27.04.2020
Attachment Size:
294 KB
Description:

This is Quick Start Guide about the Software Development Kit for all Winding Resistance Meter from Raytech.

Firmware WR (Old version)

Category:
Firmware
Release:
2.7.12.0
Publish Date:
08.12.2020
Attachment Size:
1 MB
Description:

This Firmware is valid for the following products:

WR14, WR14 R, WR50-1x, WR50-1xR, WR100-12R, WR100-13R

This firmware is suitable for the older instrument (with the CPU model: NetDCU), for serial numbers less than 350-000. These instruments can work with newer firmware but it is slow and we recommend to use this firmware version instead.

Installation:
recommended
Additional Document: raytech-firmwareupdate-wr.pdf