Description
The TR-MARK III R 250V is the successor of the famous TR-MARK III R. Besides an extended test voltage up to 250V, it offers new features and increased accuracy to make it a perfect system. A color LCD with back lighting and touch screen increases handling and user comfort. Two USB interfaces make it easy to store measurements on external storage devices and transfer easily to a personal computer or download nameplate data of xformer to test.
Features
- Color LCD with backlighting and touch screen
- Automatic measurements of Voltage/Turns Ratio, Current and Phase displacement
- Internal storage for more than 10'000 complete test results
- Simple touch screen operation
- Easy one time hook up to the transformer
- Graphical tap changer display
- Tap changer interface (In- and Output)
- Load on test object <0.05 VA
- Measures Power transformers, PT’s and CT’s
- Displays % error vs. name plate value
- Automatic phase vector detection
- Enhanced heavy-duty protection circuitry
- Extremely rugged (can withstand a drop test of 1 meter)
- Data exchange via USB-Key
- Internal Printer
- Displays deviation from a nominal ratio
- Automatic test voltage range
- 2 Years standard warranty
- Internal Printer
- Displays deviation from a nominal ratio
- Automatic test voltage range
- 2 Years standard warranty
Specifications

Model:
TR-MARK III R 250V
Size:
L: 490 mm (19.3”) W: 436 mm (17.2”) H: 177 mm (7”)
Rack unit:
4U
Weight:
7.8 kg (17 lbs.)
Input power:
100 to 250 VAC 50/60 Hz auto ranging
Consumption power:
max. 150VA
Fuse:
2AT
Test voltage user selectable:
250, 100, 40, 10, and 1VAC
Max test current:
1A
Display:
Color LCD with back lighting and touch screen
Front panel:
sealed, anodized
Interfaces:
4 USB 2.0 full speed (3 host, 1 device) and 9 Pin RS232 serial
Memory storage:
stores more than 10 000 test results internally
Operating temperature:
-10ºC to +60° C
Storage temperature:
-20°C to +70°C
Humidity:
5%-95% relative humidity, no condensation
See instruction manual for more parameters.
Specifications are subject to change without notice.
Accuracy

Measurement parameters
Turns ratio at 250V
Range
Accuracy
Resolution
0.8 ... 5000
±0.06% Rdg ±1 LSD
5 Digits
5001 ... 10000
±0.1% Rdg ±1 LSD
5 Digits
10001 … 32500
±0.3% Rdg ±1 LSD
5 Digits
32501 … 40000
±0.4% Rdg ±1 LSD
5 Digits
Turns ratio at 100V or 40V
Range
Accuracy
Resolution
0.8 ... 2000
±0.06% Rdg ±1 LSD
5 Digits
2001 ... 4000
±0.1% Rdg ±1 LSD
5 Digits
4001 ... 13000
±0.3% Rdg ±1 LSD
5 Digits
13001 … 16000
±0.4% Rdg ±1 LSD
5 Digits
Turns ratio at 10V
Range
Accuracy at 10V
Resolution
0.8 ... 2000
±0.15% Rdg ±1 LSD
5 Digits
2001 ... 4000
±0.3% Rdg ±1 LSD
5 Digits
Current
Accuracy
Resolution
0 ... 1A
±0.001A
0.1mA
Phase angle
Accuracy
Resolution
±90 Degree
±0.05 Degree
0.01 Degree
Turns ratio range
0.8 to 45'000
Flyer TR-Mark III 250V
Flyer
3.07
13.11.2020
Short overview about the TR-MARK III 250V and the TR-MARK III R 250V
Firmware TR-Mark III
Firmware
3.2.2.0
05.09.2020
The Firmware is valid for the following Raytech products:
TR Mark III, TR Mark III R, TR Mark III 250V, TR Mark III R 250V
recommended
Instruction Manual TR-Mark III
Instruction Manual
2.20
16.11.2020
Instruction Manual for TR-MARK III, TR-MARK III-R, TR-MARK III 250V, TR-MARK III-R 250V
Command Set TR-Mark III
Command Set
0.05
26.04.2020
This is a summary of the commands to remote control the TR-Mark III, TR-Mark III 250V, TR-Mark III R, TR-Mark III R 250V over the RS232 or USB interface.
Quick Start Guide SDK TR-Mark III
Command Set
1.01
26.04.2020
This is a short description about the Software Development Kit for the TR-Mark III.