LTCA-10 Load Tap Changer Analyzer

Auto discharge circuit for operator safety 3 resistance reading channels including one dynamic channel Digital resistance reading from 1 micro-ohm to 500 ohms Calculate equivalent resistance value at reference temperature Stores 50 static records and 20 dynamic records Built-in 4.5-inch thermal printer Weighs less than 44 lbs. The LTCA-10 Analyzer is a second generation load tap changer analyzer. The LTCA-10 accurately measures winding resistance of highly inductive power transformers. Triple resistance-reading channels allow the measurement of three winding resistances simultaneously. Four-wire (Kelvin) connections provide high accuracy and require no lead compensation. A special feature of this device is its ability to measure and graph the resistance trace of a transformer LTC during operation. Using a 60Vdc power supply, the LTCA-10 is capable of outputting 10 amperes.

LTCA-40 Load Tap Changer Analyzer

Auto discharge circuit for operator safety 3 resistance reading channels including one dynamic channel Digital resistance reading from 1 micro-ohm to 500 ohms Calculate equivalent resistance value at reference temperature Stores 50 static records and 20 dynamic records Built-in 4.5-inch thermal printer Weighs less than 44 lbs. The LTCA-40 Analyzer is a second generation load tap changer analyzer. The LTCA-40 accurately measures winding resistance of highly inductive power transformers. Triple resistance-reading channels allow the measurement of three winding resistances simultaneously. Four-wire (Kelvin) connections provide high accuracy and require no lead compensation. A special feature of this device is its ability to measure and graph the resistance trace of a transformer LTC during operation. Using a 60Vdc power supply, the LTCA-40 is capable of outputting 40 amperes.

Herculito DC Micro OhmMeter

100 Amperes DCD Test Current Digital Resistance Reading from 1 micro-ohm to 20 milli-ohms Highly compact, only 17" x 13" x 7" Weighs less than 18 lbs. (8 kg) The Herculito is a lightweight and compact 100 Amperes DC micro-ohm meter. The meter was designed for testing EHV circuit-breaker contact resistance, bushing contact joints or for any low-resistance measurements. Using the latest switching power supply technology, the Herculito merely weighs 18 lbs (8 kg).

Auto-Ohm 100 Series 2

10 to 100 Amperes True Continuous DC Current Automatic control of current rise and fall time Digital Resistance Reading from 1 micro-ohm to 300 milli-ohms Store and Display last 3 Readings Weighs less than 15 lbs. The Auto-Ohm 100 Series 2 is a microprocessor-based, third-generation, true DC micro-ohmmeter. It is designed for testing EHV circuit-breaker contact resistance, bushing contact joints, or for any low-resistance measurement. The Auto-Ohm 100 Series 2 accurately measures resistances ranging from 1 micro-ohm to 300 milli-ohms.

Auto-Ohm 200 Series 2

10 to 200 Amperes True Continuous DC Current Automatic control of current rise and fall time Digital Resistance Reading from 1 micro-ohm to 300 milli-ohms Store and Display last 3 Readings Weighs less than 21 lbs. The Auto-Ohm 200 Series 2 is a microprocessor-based, third-generation, true DC micro-ohmmeter. It is designed for testing EHV circuit-breaker contact resistance, bushing contact joints, or for any low-resistance measurement. The Auto-Ohm 200 Series 2 accurately measures resistances ranging from 1 micro-ohm to 300 milli-ohms.

DMOM-100 Series 2

10 to 100 Ampere True Continuous DC Current Automatic control of current rise and fall time Digital Resistance Reading from 1 micro-ohm to 300 milli-ohms Stores 63 records (of 96 readings) 2.5" Built-in thermal printer Weighs less than 17 lbs. (7.71 kg) The DMOM 100 Series 2 is a microprocessor-based, third-generation true-DC micro-ohmmeter. It is designed for testing EHV circuit-breaker contact resistance, bushing contact joints, or for any low-resistance measurement. The DMOM 100 Series 2 accurately measures resistances ranging from 1 micro-ohm to 300 milli-ohms.

DMOM-200 Series 2

10 to 200 Ampere True Continuous DC Current Automatic control of current rise and fall time Digital Resistance Reading from 1 micro-ohm to 300 milli-ohms Stores 63 records (of 96 readings) Weighs less than 23 lbs. (10.5 kg) 2.5" Built-in thermal printer The DMOM 200 Series 2 is a microprocessor-based, third-generation true-DC micro-ohmmeter. It is designed for testing EHV circuit-breaker contact resistance, bushing contact joints, or for any low-resistance measurement. The DMOM 200 Series 2 accurately measures resistances ranging from 1 micro-ohm to 300 milli-ohms. The DMOM 200 Series 2 meter conducts a true-DC current from 10A to 200A through the resistance load to be tested.

Accu-Ohm 200 Series 2 Portable Micro-Ohmmeter

10 to 200 Amperes unfiltered direct current Digital Resistance Reading from 1 micro-ohm to 300 milli-ohms Microprocessor based Store and Display last 3 Readings The Accu-Ohm 200 Series 2 meter is especially designed to accurately measure low resistances from 1 micro-ohm to 300 milliohms. Using a microprocessor, the Accu-Ohm 200 S2 can accurately calculate and display a resistance reading at any current from 10A to 200A. The Accu-Ohm 200 S2 meter is designed for testing EHV circuit-breaker contact resistance, bushing contact joints, or for any low-resistance measuring application.

ATO-400 Micro-Ohmmeter

10 to 400 Amperes unfiltered direct current Digital Resistance Reading from 1 micro-ohm to 300 milli-ohms Microprocessor based No adjustment is required Store 4,000 readings Computer interface via RS-232C or USB port The ATO-400 micro-ohm meter measures EHV circuit-breaker contact resistance, bushing contact joints, or any low-resistance conductor path that requires testing. This microprocessor controlled micro-ohm meter can accurately measure low resistances ranging from 1 micro-ohm to 300 milliohms at any test current from 10A to 400A. The digital readout displays directly in micro-ohms or milliohms. No calculation is required to compensate for lead resistances when using the ATO-400 meter. A custom switching power supply keeps the ATO-400 weight at 40 lbs (18.1 kg) make it ideal for field use.

ATO-400P Micro-Ohmmeter

10 to 400 Amperes unfiltered direct current Digital Resistance Reading from 1 micro-ohm to 300 milli-ohms Microprocessor based No adjustment is required Built-in 2.5" thermal printer Store 4,000 readings Computer interface via RS-232C or USB port The ATO-400P micro-ohm meter measures EHV circuit-breaker contact resistance,bushing contact joints, or any low-resistance conductor path that requires testing. This microprocessor controlled micro-ohm meter can accurately measure low resistances ranging from 1 micro-ohm to 300 milliohms at any test current from 10A to 400A. The digital readout displays directly in micro-ohms or milliohms.No calculation is required to compensate for lead resistances when using the ATO-400 meter. A custom switching power supply keeps the ATO-400P weight at 43 lbs (19.5 kg) make it ideal for field use.

ATO-600 Micro-Ohmmeter

10 to 600 Amperes unfiltered direct current Digital Resistance Reading from 1 micro-ohm to 300 milli-ohms Microprocessor based No adjustment is required Store 4,000 readings Computer interface via RS-232C or USB port The ATO-600 micro-ohm meter measures EHV circuit-breaker contact resistance, bushing contact joints, or any low-resistance conductor path that requires testing. This microprocessor controlled micro-ohm meter can accurately measure low resistances ranging from 1 micro-ohm to 300 milliohms at any test current from 10A to 600A (see note 1). The digital readout displays directly in micro-ohms or milliohms. No calculation is required to compensate for lead resistances when using the ATO-600 meter. A custom switching power supply keeps the ATO-600 weight at 40 lbs (18.1 kg) make it ideal for field use.

ATO-600P Micro-Ohmmeter

10 to 600 Amperes unfiltered direct current Digital Resistance Reading from 1 micro-ohm to 300 milli-ohms Microprocessor based No adjustment is required Built-in 2.5" thermal printer Store 4,000 readings Computer interface via RS-232C or USB port The ATO-600P micro-ohm meter measures EHV circuit-breaker contact resistance, bushing contact joints, or any low-resistance conductor path that requires testing. This microprocessor controlled micro-ohm meter can accurately measure low resistances ranging from 1 micro-ohm to 300 milliohms at any test current from 10A to 600A (see note 1). The digital readout displays directly in micro-ohms or milliohms. No calculation is required to compensate for lead resistances when using the ATO-600 meter. A custom switching power supply keeps the ATO-600P weight at 43 lbs (19.5 kg) make it ideal for field use.

WRM-10 Winding Resistance Ohmmeter

Auto Current Ranging from 10 MA to 10 Amps Digital Resistance Reading from 1 micro-ohm to 2,000 ohms Auto discharge circuit for operator safety Weighs less than 27 lbs. The WRM-10 is a microprocessor based low resistance ohmmeter. With 10 Amperes of test current, the WRM-10 can quickly provide a stable resistance reading of any large transformer. Dual resistance-reading channels allow the user to measure two winding resistances on the same test cycle. To ensure the operator safety, the WRM-10 automatically discharges the transformer core energy after each test.

WRM-10P Winding Resistance Ohmmeter

Range from 1 micro-ohm to 2,000 ohm Up to 10 Amperes of test current Auto discharge circuit for operator safety Built-in 2.5" Thermal Printer, computer interface Stores 48 records of 63 readings Weighs less than 27 lbs. The WRM-10P is a low resistance ohmmeter with all of the features of the WRM-10 above. In addition to the features of the WRM-10, the WRM-10P includes a built-in 2.5" wide thermal printer that allows test records to be printed in the field. Test records can also be downloaded to an IBM PC.

WRM-40 Winding Resistance Ohmmeter

Auto Current Ranging from 10 MA to 40 Amps Digital Resistance Reading from 1 micro-ohm to 500 ohms Auto discharge circuit for operator safety Built-in 2.5" Thermal Printer, computer interface Stores 48 records of 63 readings Weighs less than 30 lbs. The WRM-40 is a microprocessor based low resistance ohmmeter. With 40 Amperes of test current, the WRM-40 can very quickly provide a stable resistance reading of any large transformer. Dual resistance-reading channels measure two winding resistances on the same test cycle. The WRM-40 ensures operator safety by automatically discharging the transformer core energy after each test.

Accessory Clips for the Auto-Ohm and Accu-Ohm