Megger MTO250
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Megger MTO250 50 A Transformer Ohmmeter

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SKU: 83345 Category:
Brand:Megger

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Megger MTO250 50 A Transformer Ohmmeter

The Megger MTO250 50 A transformer ohmmeter is a field-portable, line-operated tool engineered for precisely measuring the resistance of various magnetic windings, including transformers, shunt reactors, and rotating machinery. It is designed to conduct safe and accurate tests and can also measure low resistance in connections, contacts, and control circuits.

The MTO250 transformer ohmmeter features two potential inputs that allow for simultaneous resistance measurement of two primary windings, two secondary windings, or one of each. This capability of dual reading and injection streamlines the testing process, making it significantly more efficient.

Megger MTO250 Key Features

  • Capable of testing transformers up to 1000 MVA
  • DC test current up to 50 A maximum
  • Integrated demagnetisation feature
  • Computer control and internal data storage
  • Validates proper operation of on-load tap changers
  • Protected against accidental current lead disconnection (through potential leads)

Megger MTO250 Specifications

Specification Details
Input 85-264 VAC, 47-63 Hz, 1500 VA
Output Current Ranges 1 A / 10 A / 25 A / 50 A
Open Circuit Voltage 50 V DC
Resistance and Current Measurement/Display
50 A 10 µΩ to 0.04 Ω, Resolution: 0.0000001 Ω
0.04 Ω to 0.4 Ω, Resolution: 0.00001 Ω
25 A 10 µΩ to 0.08 Ω, Resolution: 0.0000001 Ω
0.08 Ω to 0.8 Ω, Resolution: 0.00001 Ω
10 A 10 µΩ to 0.2 Ω, Resolution: 0.000001 Ω
0.2 Ω to 2 Ω, Resolution: 0.0001 Ω
1 A 100 µΩ to 2 Ω, Resolution: 0.00001 Ω
2 Ω to 20 Ω, Resolution: 0.001 Ω
Accuracy and Resolution Typical Accuracy: ±0.1%, Guaranteed Accuracy: ±0.25%
Current Resolution and Accuracy 4 digits, ±0.25%
Computer Interface Via Ethernet port
Internal Data Storage 9 groups, 99 results per group
LTC Make-Break Transition Settings 2 ms, 20 ms, 50 ms, 80 ms
Safety/EMC/Vibration Conforms to EN61010-1, ISTA 1A, EN61326
Environmental Operating: -10°C to 50°C, Storage: -25°C to 70°C, Humidity: 0-90% RH
Dimensions and Weight 8.5 x 21.5 x 13 inches, Unit: 30 lb, Optional leads: 29 lb, In case: 96 lb

Datasheet

Mme-pdfs-image

Specifications

Specification Details
Input 85-264 VAC, 47-63 Hz, 1500 VA
Output Current Ranges 1 A / 10 A / 25 A / 50 A
Open Circuit Voltage 50 V DC
Resistance and Current Measurement/Display
50 A 10 µΩ to 0.04 Ω, Resolution: 0.0000001 Ω
0.04 Ω to 0.4 Ω, Resolution: 0.00001 Ω
25 A 10 µΩ to 0.08 Ω, Resolution: 0.0000001 Ω
0.08 Ω to 0.8 Ω, Resolution: 0.00001 Ω
10 A 10 µΩ to 0.2 Ω, Resolution: 0.000001 Ω
0.2 Ω to 2 Ω, Resolution: 0.0001 Ω
1 A 100 µΩ to 2 Ω, Resolution: 0.00001 Ω
2 Ω to 20 Ω, Resolution: 0.001 Ω
Accuracy and Resolution Typical Accuracy: ±0.1%, Guaranteed Accuracy: ±0.25%
Current Resolution and Accuracy 4 digits, ±0.25%
Computer Interface Via Ethernet port
Internal Data Storage 9 groups, 99 results per group
LTC Make-Break Transition Settings 2 ms, 20 ms, 50 ms, 80 ms
Safety/EMC/Vibration Conforms to EN61010-1, ISTA 1A, EN61326
Environmental Operating: -10°C to 50°C, Storage: -25°C to 70°C, Humidity: 0-90% RH
Dimensions and Weight 8.5 x 21.5 x 13 inches, Unit: 30 lb, Optional leads: 29 lb, In case: 96 lb
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