• Direct 2-channel digital reading (1 µΩ to 2000 Ω)
• DC test current up to 10 A maximum
• 0.25% measurement accuracy
• Integrated demagnetization feature
• Tests operation of on-load tap-changers
• Very fast auto safety discharge circuit
The MTO210 Transformer Ohmmeter is a line-operated, field-portable instrument designed specifically to measure the dc resistance of all types of magnetic windings safely and accurately. It can test transformers and rotating machine windings and perform low-current resistance measurements on connections, contacts and control circuits.
The Transformer Ohmmeter is extremely useful when testing the windings and contact resistance of tap-changers with “make-before-break” contacts and voltage regulators. This action will check for pitted or misaligned contacts as the instrument will give an indication if either condition occurs.
Transformer Ohmmeter
120/240 volt, 50/60 Hz input MTO210
Included Accessories
V1 Potential Lead Set, 60 ft (18 m) 2000-700
V2 Potential Lead Set, 60 ft (18 m) 2000-701
Current Lead Set, 60 ft (18 m) 2000-702
Jumper Lead, 30 ft (9 m) 2000-703
Ground Lead, 15 ft (4.5 m) 4702-7
RS232 Cable for connecting to a PC and Printer CA-RS232
Remote Hand Switch 30915-220
AC Power Cord (IEC60320-C13 to US standard) 17032
AC Power Cord (IEC60320-C13 to Schuko CEE 7/7) 17032-13
Quick Start Guide 37178
Canvas Carrying Bag (for leadset) 30915-211
CAT5e Patch Cable 36798
Instruction Manual ATVMMTO210
PowerDB LITE
Optional Accessories
V1 Potential Lead Set, 100 ft (30 m) 2001-403
V2 Potential Lead Set, 100 ft (30 m) 2001-404
Jumper Lead, 50 ft (15 m) 2001-405
Current Lead Set, 100 ft (30 m) 2001-406
Kelvin Lead Set, 60 ft (18 m) 2001-407
Kelvin Lead Set, 100 ft (30 m) 2001-408
Test Lead Set, 60 ft (18 m) including V1, V2,
Current and 30 ft (9 m) Jumper Lead 1001-425
Test Lead Set, 100 ft (30 m) including V1, V2,
Current and 50 ft Jumper Lead 1001-451
Beacon Strobe Light 37181
Printer (includes battery/line powered serial thermal printer)
120 V, 60 Hz 1001-390
230 V, 50 Hz 1001-401
Foam-lined Transit Case 37009
USB to Ethernet Adapter 90001-541
PowerDB (full version) Software,
1st machine license, soft key DB1001
PowerDB (full version) Software,
1st machine license, USB dongle DB1001S