Transformer Testing Equipment (10)
TRM 25+
SCOPE introduces 25 A state of the art precision winding resistance meter, specially designed for field testing as well as factory testing of large transformers up to 500 MVA. Winding resistance value of transformer and rotating machine are directly displayed on 5.7” TFT display. TRM 25+ is designed to work in live EHV switchyard conditions, ensuring operator’s safety and repeatability of results. Maintenance time saving is ensured by one time connection to transformer with simultaneous resistance measurement of six windings, measurement of resistances of all taps with automated tap change and demagnetization facility. The meter is protected against the back-EMF offered by large inductive windings.
Features
- Can measure DC winding resistance of large rotating machines, highly inductive test objects like Transformer, Generators and Motors etc.
- 25 A DC current makes it possible to measure low resistances with high accuracy.
- One time connection to either all windings of primary and / or secondary. Simultaneous measurement reduces connection and measurement time.
- Change in winding resistance, short or open windings can be detected from measured values.
- Automatic temperature measurement and temperature corrected value calculation.
- Measurements of winding resistance of all taps of phases in one go. Recoding, printing and storage of results.
- OLTC contact opening and compete OLTC performance test facility. Testing of either single or three phases in one test. Single report generation.
- To know condition of OLTC contacts, OLTC mechanism, transition resistor.
- Discharges and demagnetizes the object after test.
Specifications
| Parameter | TRM 25+ |
| No of Channels | 6 Current Channels, 6 Volatge Channels , 1 tempreture Channel |
| Connections | One time connection to primary or secondary winding of transformer |
| Current Ranges | 25A, 10A, 5A, 1A, 100mA, 10mA |
| Resistance Ranges | Up to 2000 Ω (Auto ranging) |
| Resolution | 4 ½ digit |
| Accuracy | Value ± 0.5% ± 5 counts |
| Current and Resistance ranges | Please look for the table below |
| Open Circuit Voltage | 50 V |
| Demagnetization Facility | Yes |
| Display | 5.7” TFT display with touch screen |
| Printer | 58 mm, Inbuilt thermal printer |
| Communication Port | Ethernet for PC communication |
| Data Port | USB for extrernal memory stick connection |
| External Control | Possible via Notebook PC through Ethernet port and software |
| Temperature measurement | Range 0 to 100 deg, Accuracy ± 1 deg, Resolution 0.1deg |
| Temperature correction | For Aluminium & Copper |
| Temperature Input Channel | Compatible to accept RTD input |
| User Interface | Resistive touch screen |
| Back EMF Protection | Yes. Automatic protection after measurement and during accidental disconnection of current path. Protection operates even if Mains supply fails. |
| Discharge Facility & Indication | Automatic Discharge of DUT & messages on screen |
| Tap Changer Test | Detects discontinuity during tap changer test |
| OLTC Test Facility(Optional) | OLTC test facility with current v/s time graph, Single or Three Phases simultaneously. Available in control through PC option only. |
| OLTC current Ranges | 25A, 10A, 5A |
| Protection | Shut down of power source on Over voltage, Over current,Over temperature |
| Indications | Polarity reversal, Test connection continuity and discharge |
| Diagnostics Check | At power On instrument does self-check of channels and shows the message |
| Test Leads | Measuring leads, AC supply, earth leads and temperature sensor lead |
| Operating Environment | -10°C to 50°C, 95% RH (non condensing) |
| Storage Temperature | -20°C to 60 °C |
| Heat Run test | Yes |
| Delta connection Measurement | values of each arm of delta winding is calculated and displayed |
| One side earthing | Instrument is able to do the measurement with one side earthing (with Neutral earthing) |
| Input Supply | 110V AC ±15% 50/60 Hz ±10% Or 220V AC ±15% 50/60 Hz ±10%. |
| Dimensions | 630 x 500 x 302mm |
| Weight | 22 Kg. Approx |
| Range, Resistance & Resolutions | Current Range | ||||||
| 25A | 10A | 5A | 1A | 100mA | 10mA | ||
| Range # 1 | Resistance | 800μΩ | 2mΩ | 4mΩ | 20mΩ | 200mΩ | 2Ω |
| Resolution | 0.1μΩ | 0.1μΩ | 1μΩ | 1μΩ | 10μΩ | 100μΩ | |
| Range #2 | Resistance | 8mΩ | 20mΩ | 40mΩ | 200mΩ | 2Ω | 20Ω |
| Resolution | 1μΩ | 1μΩ | 10μΩ | 10μΩ | 100μΩ | 1mΩ | |
| Range # 3 | Resistance | 80mΩ | 200mΩ | 400mΩ | 2Ω | 20Ω | 200Ω |
| Resolution | 10μΩ | 10μΩ | 100μΩ | 100μΩ | 1mΩ | 10mΩ | |
| Range # 4 | Resistance | 800mΩ | 2Ω | 4Ω | 20Ω | 200Ω | 2000Ω |
| Resolution | 100μΩ | 100μΩ | 1mΩ | 1mΩ | 10mΩ | 100mΩ | |
TRM 50+
SCOPE introduces 50 A state of the art precision winding resistance meter, specially designed for field testing as well as factory testing of large transformers up to 500 MVA. Winding resistance value of transformer and rotating machine are directly displayed on 5.7” TFT display. TRM 50 is designed to work in live EHV switchyard conditions, ensuring operator’s safety and repeatability of results. Maintenance time saving is ensured by one time connection to transformer with simultaneous resistance measurement of three / six windings, measurement of resistances of all taps with automated tap change and demagnetization facility. The meter is protected against the back-EMF offered by large inductive windings.
Features
- Can measure DC winding resistance of large rotating machines, highly inductive test objects like Transformer, Generators and Motors etc.
- 50 A DC current makes it possible to measure low resistances with high accuracy.
- One time connection to either all windings of primary and / or secondary. Simultaneous measurement reduces connection and measurement time.
- Change in winding resistance, short or open windings can be detected from measured values.
- Automatic temperature measurement and temperature corrected value calculation.
- Measurements of winding resistance of all taps of phases in one go. Recoding, printing and storage of results.
- OLTC contact opening and compete OLTC performance test facility. Testing of either single or three phases in one test. Single report generation.
- To know condition of OLTC contacts, OLTC mechanism, transition resistor.
- Discharges and demagnetizes the object after test.
Specifications
| Parameter | TRM 50/ TRM 50+ |
| No of Channels | 3/6 Current Channels, 3/6 Volatge Channels , 1 tempreture Channel |
| Connections | One time connection to primary or secondary winding of transformer |
| Current Ranges | 50A, 40A, 25A, 10A, 5A, 1A, 100mA, 10mA |
| Resistance Ranges | Up to 2000 Ω (Auto ranging) |
| Resolution | 4 ½ digit |
| Accuracy | Value ± 0.5% ± 5 counts |
| Current and Resistance ranges | |
| Open Circuit Voltage | 50 V |
| Demagnetization Facility | Yes |
| Display | 5.7” TFT display with touch screen |
| Printer | 58 mm, Inbuilt thermal printer |
| Communication Port | Ethernet for PC communication |
| Data Port | USB for extrernal memory stick connection |
| External Control | Possible via Notebook PC through Ethernet port and software |
| Temperature measurement | Range 0 to 100 deg, Accuracy ± 1 deg, Resolution 0.1deg |
| Temperature correction | For Aluminium & Copper |
| Temperature Input Channel | Compatible to accept RTD input |
| User Interface | Resistive touch screen |
| Back EMF Protection | Yes. Automatic protection after measurement and during accidental disconnection of current path. Protection operates even if Mains supply fails. |
| Discharge Facility & Indication | Automatic Discharge of DUT & messages on screen |
| Tap Changer Test | Detects discontinuity during tap changer test |
| OLTC Test Facility(Optional) | OLTC test facility with current v/s time graph, Single or Three Phases simultaneously. Available in control through PC option only. |
| OLTC current Ranges | 50A, 40A, 25A, 10A, 5A |
| Protection | Shut down of power source on Over voltage, Over current,Over temperature |
| Indications | Polarity reversal, Test connection continuity and discharge |
| Diagnostics Check | At power On instrument does self-check of channels and shows the message |
| Test Leads | Measuring leads, AC supply, earth leads and temperature sensor lead |
| Operating Environment | -10°C to 50°C, 95% RH (non condensing) |
| Storage Temperature | -20°C to 60 °C |
| Heat Run test | Yes |
| Delta connection Measurement | values of each arm of delta winding is calculated and displayed |
| One side earthing | Instrument is able to do the measurement with one side earthing (with Neutral earthing) |
| Input Supply | 110V AC ±15% 50/60 Hz ±10% Or 220V AC ±15% 50/60 Hz ±10%. |
| Dimensions | 630 x 500 x 302mm |
| Weight | 22 Kg. Approx |
TRM 25
SCOPE introduces 25 A state of the art precision winding resistance meter, specially designed for field testing as well as factory testing of large transformers up to 500 MVA. Winding resistance value of transformer and rotating machine are directly displayed on 5.7” TFT display. TRM 25 is designed to work in live EHV switchyard conditions, ensuring operator’s safety and repeatability of results. Maintenance time saving is ensured by one time connection to transformer with simultaneous resistance measurement of three / six windings, measurement of resistances of all taps with automated tap change and demagnetization facility. The meter is protected against the back-EMF offered by large inductive windings.
Features
- Can measure DC winding resistance of large rotating machines, highly inductive test objects like Transformer, Generators and Motors etc.
- 25A DC current makes it possible to measure low resistances with high accuracy.
- One time connection to either all windings of primary and / or secondary. Simultaneous measurement reduces connection and measurement time.
- Change in winding resistance, short or open windings can be detected from measured values.
- Automatic temperature measurement and temperature corrected value calculation.
- Measurements of winding resistance of all taps of phases in one go. Recoding, printing and storage of results.
- OLTC contact opening and compete OLTC performance test facility. Testing of either single or three phases in one test. Single report generation.
- To know condition of OLTC contacts, OLTC mechanism, transition resistor.
- Discharges and demagnetizes the object after test.
Specifications
| Parameter | TRM 25/ TRM 25+ |
| No of Channels | 3/6 Current Channels, 3/6 Volatge Channels , 1 temperature Channel |
| Connections | One time connection to primary or secondary winding of transformer |
| Current Ranges | 25A, 10A, 5A, 1A, 100mA, 10mA |
| Resistance Ranges | Up to 2000 Ω (Auto ranging) |
| Resolution | 4 ½ digit |
| Accuracy | Value ± 0.5% ± 5 counts |
| Open Circuit Voltage | 50 V |
| Demagnetization Facility | Yes |
| Display | 5.7” TFT display with touch screen |
| Printer | 58 mm, Inbuilt thermal printer |
| Communication Port | Ethernet for PC communication |
| Data Port | USB for extrernal memory stick connection |
| External Control | Possible via Notebook PC through Ethernet port and software |
| Temperature measurement | Range 0 to 100 deg, Accuracy ± 1 deg, Resolution 0.1deg |
| Temperature correction | For Aluminium & Copper |
| Temperature Input Channel | Compatible to accept RTD input |
| User Interface | Resistive touch screen |
| Back EMF Protection | Yes. Automatic protection after measurement and during accidental disconnection of current path. Protection operates even if Mains supply fails. |
| Discharge Facility & Indication | Automatic Discharge of DUT & messages on screen |
| Tap Changer Test | Detects discontinuity during tap changer test |
| OLTC Test Facility(Optional) | OLTC test facility with current v/s time graph, Single or Three Phases simultaneously. Available in control through PC option only. |
| OLTC current Ranges | 25A, 10A, 5A |
| Protection | Shut down of power source on Over voltage, Over current,Over temperature |
| Indications | Polarity reversal, Test connection continuity and discharge |
| Diagnostics Check | At power On instrument does self-check of channels and shows the message |
| Test Leads | Measuring leads, AC supply, earth leads and temperature sensor lead |
| Operating Environment | -10°C to 50°C, 95% RH (non condensing) |
| Storage Temperature | -20°C to 60 °C |
| Heat Run test | Yes |
| Delta connection Measurement | values of each arm of delta winding is calculated and displayed |
| One side earthing | Instrument is able to do the measurement with one side earthing (with Neutral earthing) |
| Input Supply | 110V AC ±15% 50/60 Hz ±10% Or 220V AC ±15% 50/60 Hz ±10%. |
| Dimensions | 630 x 500 x 302mm |
| Weight | 22 Kg. Approx |
TTRM 101
SCOPE introduces state of the art precision single phase Transformer Turns Ratio Meter (TTRM ) designed for field testing as well as factory testing of power transformers, instrument transformers and distribution transformers of all types. TTRM 101 measures only turns ratio where as TTRM 102 along with turns ratio, measures ratio deviation, phase angle deviation, magnetizing current and detects tap-position of single phase transformer in charged switchyard condition. The range of AC voltage selection offers high accuracy in measurement.Both the instrument have in-built TFT display with touch screen and thermal printer. The user friendly, simple instrument makes the testing more easy. With the touch keypad it is possible to enter required DUT information.The ratio results are displayed with % error. Internal non-volatile memory gives the provision of storing test results.Further data can be downloaded to PC or copied to memory stick through USB port provided.
The C-Trans-software, gives the flexibility to download the stored results to PC and do the further analysis and report generation.
Features
- Different voltage ranges provided for more accurate results
- 5.7” TFT display with touch screen and simple menus to operate TTRM
- Facility to configure transformer ID and details
- Automatic OLTC operation for tap change
- Date and time stamping to results
- In-build memory to store the test results
- Thermal printer to take quick print out for record
- Ethernet port for PC interface to transfer records to PC Software
- Mass storage device (USB 2.0) interface for copying records in pen drive
- Lightweight, portable instrument household in rugged moulded case
Specifications
| Parameter | Test Voltage | Range | Resolution | Accuracy | |
| 1 |
Ratio | 10 V | 0.8000 – 9.9999 | 0.0001 |
0.05 % |
| 10.000 – 99.999 | 0.001 |
0.05 % |
|||
| 100.00 – 999.99 | 0.01 | 0.05 % | |||
| 1000.0 – 1500.0 | 0.1 | 0.05 % | |||
| 1500.1 – 2000.0 | 0.1 | 0.1 % | |||
| 2000.1 – 4000.0 | 0.1 | 0.2 % | |||
| 40 V | 0.8000 – 9.9999 | 0.0001 | 0.05 % | ||
| 10.000 – 99.999 | 0.001 | 0.05 % | |||
| 100.00 – 999.99 | 0.01 | 0.05 % | |||
| 1000.0 – 4000.0 | 0.1 | 0.05 % | |||
| 4000.1 – 9999.9 | 0.1 | 0.25 % | |||
| 10000 - 13000 | 1 | 0.25 % | |||
| 100 V | 0.8000 – 9.9999 | 0.0001 | 0.03 % | ||
| 10.000 – 99.999 | 0.001 | 0.03 % | |||
| 100.00 – 999.99 | 0.01 | 0.05 % | |||
| 1000.0 – 4000.0 | 0.1 | 0.05 % | |||
| 4000.1 – 9999.9 | 0.1 | 0.15 % | |||
| 10000 – 13000 | 1 | 0.15 % | |||
| 13001 - 20000 | 1 | 0.20 % | |||
| 2 |
Excitation Current (Only in TTRM 102) |
10 V | 2000 mA | 0.1 mA | ± 1 mA |
| 40 V | 500 mA | 0.1 mA | ± 1 mA | ||
| 100 V | 200 mA | 0.1 mA | ± 1 mA | ||
| 3 | Phase Deviation
(Only in TTRM 102) |
10V / 40V / 100 V |
± 180 Degree | 0.01 Degree | ± 0.05 Degree |
| Parameters | TTRM 101 |
| No of channels | single HV channel and single LV channel |
| Test Voltages | 10V, 40V and 100V AC selectable voltages |
| Measurements | Ratio, Ratio error |
| OLTC Control | Raise and Lower control to operate OLTC |
| Test Results Display | (TFT) display, Thermal Printer. |
| Test Leads | Suitable to test EHV Transformers |
| Printer | Inbuilt Thermal Printer |
| Paper | Thermal, 58 mm wide roll form |
| Memory | Inbuilt memory, can store 50000 records, with date and time stamping. USB port to copy record in pen drive |
| Power | (110V ± 15%) / (60Hz ± 10%) OR (230V ± 15%) / (50Hz ± 10%), 75VA.. |
| Communication Port | Ethernet port. |
| Housing | Fitted in moulded case |
| Environment | 0: -20°C to 55°C 95%RH (non-condensing) Electrical noise normally found in charged EHV switchyards |
| Dimensions | 435 X 315X 175 mm. (Max.) |
| Weight | 10 Kg Approx |
TTRM 301
SCOPE introduces state of the art precision three phase Transformer Turns Ratio Meter (TTRM ) designed for field testing as well as factory testing of power transformers, instrument transformers and distribution transformers of all types. Along with turns ratio, this light weight and reliable instrument measures ratio deviation, phase angle deviation, magnetizing current and detects tap-position of single as well as three phase transformers in charged switchyard condition. The instrument has facility to automatically detect vector group of all majority configurations available. The differant AC voltage selection offers high accuracy in measurement.
Instrument has in-built TFT display with touch screen and thermal printer. The user friendly, simple instrument makes the testing more easy. With the touch keypad it is possible to enter required DUT information. The ratio results of all the phases are displayed in tabular form with % error. Internal non volatile memory gives the provision of storing test results. Further data can be downloaded to PC or copied to memory stick through USB port provided. The CTrans-TTRM software, gives the flexibility to download the stored results to PC and do the further analysis and report generation.
Features
- Different voltage ranges provided for more accurate results
- 5.7” TFT display with touch screen and simple menus to operate TTRM
- Facility to configure transformer ID and details
- Automatic OLTC operation for tap change
- Date and time stamping to results
- In-build memory to store the test results
- Thermal printer to take quick print out for record
- Ethernet port for PC interface to transfer records to PC Software
- Mass storage device (USB 2.0) interface for copying records in pen drive
- Lightweight,portable instrument household in rugged moulded case
Specifications
| Parameter | Display | Range | Resolution | Accuracy | |
| 1 | Turns Ratio | 1.9999 : 1 | 0.8-20000 : 1 | 5 Digit |
0.8 - 100: ± 0.05% @ 10V 101 - 1000: ± 0.05% @ 10V 1001 - 1500: ± 0.05% @ 10V 1501 - 2000: ± 0.10% @ 10V 2001 - 4000: ± 0.20% @ 10V
0.8 - 100: ± 0.05% @ 40V 101 - 1000: ± 0.05% @ 40V 1001 - 1500: ± 0.05% @ 40V 1501 - 2000: ± 0.05% @ 40V 2001 - 4000: ± 0.05% @ 40V 4001 - 13000: ± 0.25% @ 40V
0.8 - 100: ± 0.03% @ 100V 101 - 1000: ± 0.05% @ 100V 1001 - 1500: ± 0.05% @ 100V 1501 - 2000: ± 0.05% @ 100V 2001 - 4000: ± 0.05% @ 100V 2001 - 4000: ± 0.05% @ 100V 13001 - 20000: ± 0.20% @ 100V |
| 2 | Excitation Current | 0.1mA to 1.999A | 0-2A | 0.1mA | ± 1mA |
| 3 | Phase Deviation | 0.05 Deg to +179.95 Deg | ± 180 Deg | 0.05 Deg | ± 0.05 Deg |
| Parameters | TTRM 301 |
| No of channels | Three HV channels and three LV channels |
| Test Voltages | 10V, 40V and 100V AC selectable voltages |
| Measurements | Ratio, Ratio error |
| OLTC Control | Raise and Lower control to operate OLTC |
| Test Results Display | (TFT) display, Thermal Printer. |
| Test Leads | Suitable to test EHV Transformers |
| Paper | Thermal, 58 mm wide roll form |
| Memory | Inbuilt memory, can store 50000 records, with date and time stamping. USB port to copy record in pen drive |
| Power | 90V – 265V, 50/60 Hz, 100VA approx. |
| Communication Port | Ethernet port. |
| Housing | Fitted in moulded case |
| Environment | 0 to 50 C, 95% RH (non-condensing) Electrical noise normally found in charged EHV switchyards |
| Dimensions | 435 X 315X 175 mm. (Max.) |
| Weight | 10 Kg Approx |
TTRM 302
SCOPE introduces state of the art precision three phase Transformer Turns Ratio Meter (TTRM ) designed for field testing as well as factory testing of power transformers, instrument transformers and distribution transformers of all types. Along with turns ratio, this light weight and reliable instrument measures ratio deviation, phase angle deviation, magnetizing current and detects tap-position of single as well as three phase transformers in charged switchyard condition. The instrument has facility to automatically detect vector group of all majority configurations available. The differant AC voltage selection offers high accuracy in measurement.
Instrument has in-built TFT display with touch screen and thermal printer. The user friendly, simple instrument makes the testing more easy. With the touch keypad it is possible to enter required DUT information. The ratio results of all the phases are displayed in tabular form with % error. Internal non volatile memory gives the provision of storing test results. Further data can be downloaded to PC or copied to memory stick through USB port provided. The CTrans-TTRM software, gives the flexibility to download the stored results to PC and do the further analysis and report generation.
Features
- Different voltage ranges provided for more accurate results
- 5.7” TFT display with touch screen and simple menus to operate TTRM
- Facility to configure transformer ID and details
- Automatic OLTC operation for tap change
- Date and time stamping to results
- In-build memory to store the test results
- Thermal printer to take quick print out for record
- Ethernet port for PC interface to transfer records to PC Software
- Mass storage device (USB 2.0) interface for copying records in pen drive
- Lightweight,portable instrument household in rugged moulded case
Specifications
| Parameter | Display | Range | Resolution | Accuracy | |
| 1 | Turns Ratio | 1.9999 : 1 | 0.8-20000 : 1 | 5 Digit |
0.8 - 100: ± 0.05% @ 10V 101 - 1000: ± 0.05% @ 10V 1001 - 1500: ± 0.05% @ 10V 1501 - 2000: ± 0.10% @ 10V 2001 - 4000: ± 0.20% @ 10V
0.8 - 100: ± 0.05% @ 40V 101 - 1000: ± 0.05% @ 40V 1001 - 1500: ± 0.05% @ 40V 1501 - 2000: ± 0.05% @ 40V 2001 - 4000: ± 0.05% @ 40V 4001 - 13000: ± 0.25% @ 40V
0.8 - 100: ± 0.03% @ 100V 101 - 1000: ± 0.05% @ 100V 1001 - 1500: ± 0.05% @ 100V 1501 - 2000: ± 0.05% @ 100V 2001 - 4000: ± 0.05% @ 100V 2001 - 4000: ± 0.05% @ 100V 4001-13000: ± 0.15% @ 100V 13001 - 20000: ± 0.20% @ 100V |
| 2 | Excitation Current | 0.1mA to 1.999A | 0-2A | 0.1mA | ± 1mA |
| 3 | Phase Deviation | 0.05 Deg to +179.95 Deg | ± 180 Deg | 0.05 Deg | ± 0.05 Deg |
| Parameters | TTRM 302 |
| No of channels | Three HV channels and three LV channels |
| Test Voltages | 10V, 40V and 100V AC selectable voltages |
| Measurements |
Ratio, Ratio error, Phase Angle Deviation, Excitation current, Vector group and Magnetic balance (optional) |
| OLTC Control | Raise and Lower control to operate OLTC |
| Test Results Display | 5.7” touch-screen (TFT) display, thermal printer |
| Test Leads | Suitable to test EHV Transformers |
| Paper | Thermal, 58 mm wide roll form |
| Memory | Up to 50000 records inbuilt memory, with date and time stamping |
| Power | (110V ± 15%) / (60Hz ± 10%) OR (230V ± 15%) / (50Hz ± 10%), 75VA. |
| Communication Port | Ethernet port for PC Communication, USB port for data downloading to pen-drive |
| Housing | IP 65 rated moulded case |
| Operating Environment | -20°C to +55°C, 95%RH (non-condensing) |
| Storage Environment | -40°C to +60°C, 95%RH (non-condensing) |
| Dimensions | 435 X 315X 175 mm. (Max.) |
| Weight | 10 Kg Approx |
TTRM 102
SCOPE introduces state of the art precision single phase Transformer Turns Ratio Meter (TTRM ) designed for field testing as well as factory testing of power transformers, instrument transformers and distribution transformers of all types. TTRM 102 along with turns ratio, measures ratio deviation, phase angle deviation, magnetizing current and detects tap-position of single phase transformer in charged switchyard condition. The range of AC voltage selection offers high accuracy in measurement.Both the instrument have in-built TFT display with touch screen and thermal printer. The user friendly, simple instrument makes the testing more easy. With the touch keypad it is possible to enter required DUT information.The ratio results are displayed with % error. Internal non-volatile memory gives the provision of storing test results.Further data can be downloaded to PC or copied to memory stick through USB port provided.
The C-Trans-software, gives the flexibility to download the stored results to PC and do the further analysis and report generation.
Features
- Different voltage ranges provided for more accurate results
- 5.7” TFT display with touch screen and simple menus to operate TTRM
- Facility to configure transformer ID and details
- Automatic OLTC operation for tap change
- Date and time stamping to results
- In-build memory to store the test results
- Thermal printer to take quick print out for record
- Ethernet port for PC interface to transfer records to PC Software
- Mass storage device (USB 2.0) interface for copying records in pen drive
- Lightweight, portable instrument household in rugged moulded case
Specifications
| Parameter | Test Voltage | Range | Resolution | Accuracy | |
| 1 |
Ratio | 10 V | 0.8000 – 9.9999 | 0.0001 |
0.05 % |
| 10.000 – 99.999 | 0.001 |
0.05 % |
|||
| 100.00 – 999.99 | 0.01 | 0.05 % | |||
| 1000.0 – 1500.0 | 0.1 | 0.05 % | |||
| 1500.1 – 2000.0 | 0.1 | 0.1 % | |||
| 2000.1 – 4000.0 | 0.1 | 0.2 % | |||
| 40 V | 0.8000 – 9.9999 | 0.0001 | 0.05 % | ||
| 10.000 – 99.999 | 0.001 | 0.05 % | |||
| 100.00 – 999.99 | 0.01 | 0.05 % | |||
| 1000.0 – 4000.0 | 0.1 | 0.05 % | |||
| 4000.1 – 9999.9 | 0.1 | 0.25 % | |||
| 10000 - 13000 | 1 | 0.25 % | |||
| 100 V | 0.8000 – 9.9999 | 0.0001 | 0.03 % | ||
| 10.000 – 99.999 | 0.001 | 0.03 % | |||
| 100.00 – 999.99 | 0.01 | 0.05 % | |||
| 1000.0 – 4000.0 | 0.1 | 0.05 % | |||
| 4000.1 – 9999.9 | 0.1 | 0.15 % | |||
| 10000 – 13000 | 1 | 0.15 % | |||
| 13001 - 20000 | 1 | 0.20 % | |||
| 2 |
Excitation Current |
10 V | 2000 mA | 0.1 mA | ± 1 mA |
| 40 V | 500 mA | 0.1 mA | ± 1 mA | ||
| 100 V | 200 mA | 0.1 mA | ± 1 mA | ||
| 3 | Phase Deviation |
10V / 40V / 100 V |
± 180 Degree | 0.01 Degree | ± 0.05 Degree |
| Parameters | TTRM 102 |
| No of channels | single HV channel and single LV channel |
| Test Voltages | 10V, 40V and 100V AC selectable voltages |
| Measurements | Ratio, Ratio error, Phase Angle Deviation, Excitation Current |
| OLTC Control | Raise and Lower control to operate OLTC |
| Test Results Display | (TFT) display, Thermal Printer. |
| Test Leads | Suitable to test EHV Transformers |
| Printer | Inbuilt Thermal Printer |
| Paper | Thermal, 58 mm wide roll form |
| Memory | Inbuilt memory, can store 50000 records, with date and time stamping. USB port to copy record in pen drive |
| Power | (110V ± 15%) / (60Hz ± 10%) OR (230V ± 15%) / (50Hz ± 10%), 75VA.. |
| Communication Port | Ethernet port. |
| Housing | Fitted in moulded case |
| Environment | 0: -20°C to 55°C 95%RH (non-condensing) Electrical noise normally found in charged EHV switchyards |
| Dimensions | 435 X 315X 175 mm. (Max.) |
| Weight | 10 Kg Approx |
TRM 104
TRM104 is a portable winding resistance meter, designed to work in live EHV switchyards. Winding resistance values of large transformers up to 500 MVA and rotating machines are directly displayed. The meter is protected against the back emf offered by large inductive winding. A back-lit 4 line LCD with a user-friendly menu sets up the instrument for the test. Winding resistances and safety messages are also shown on this display. It is possible to measure the resistance of two windings simultaneously.The meter contains a special power source for rapid stabilization of test results.
A 30V DC, 10 Amp power source, controlled strategically by digital means passes the selected current through the winding. Precision instrumentation amplifiers read voltage developed across the windings and the ohmic values are directly displayed. Use of the classical Kelvin’s 4-wire method ensures reliable measurement. Specially designed thermal management of power source enables measurement over longer periods, when delta connected generator transformers are tested. The TRM is capable of identifying the interruption of injected current during tap change of OLTC. A beeper alarm during current injection ensures operator safety during measurement.
Features
- Winding resistance values of large transformers upto 500 MVA and rotating machines are directly displayed.
- Portable winding resistance meter, designed to work in live EHV switchyards.
- Protected against the back emf off ered by large inductive windings.
- A backlit 4 line LCD with a user-friendly menu sets up the instrument for the test. Winding resistances and safety messages are also shown on this display.
- Possible to measure the resistance of two windings simultaneously.
- The meter contains a special power source for rapid stabilisation of test results
Specifications
| Parameter | TRM 104 |
| No of Channels | Two, for simultaneous measurement on 2 windings |
| Current Ranges | 10A, 1A, 100mA, 10mA |
| Resistance Ranges | Up to 2000 Ω (Auto ranging) |
| Resolution | 4 ½ digit |
| Accuracy | Value ± 0.5% ± 2 digits |
| Open Circuit Voltage | 30 V |
| Display | One backlit 4 line LCD display for interactive menu |
| Test Leads | 20m, suitable to test HV/EHV transformers |
| Environment | 0°C to 50°C, 95% RH (non condensing) |
| Input Supply | 230 VAC ± 15%, 50 Hz ± 10%, 400 VA approx |
| Dimensions | 475 x 405 x 230 mm |
| Weight | 15 Kg. Approx |
DIR CT
SCOPE proudly introduces Dir CT, a CT Polarity Tester specially designed to verify correctness of polarity of current transformers cores in live EHV switchyards. Polarity test is one of the most common yet crucial tests required to be done on current transformers by commissioning as well as maintenance engineers. Even though it is commonly conducted check, there was no all in one simple tool available for this measurement. DIR CT fills this void to perfection, it is expected to significantly reduce the time taken for polarity checks on numerous CT in sub-station, especially during commissioning of new sub-stations
It is must have tool for Testing & Commissioning companies.
Features
- Simple, Portable, Lightweight, Handheld device.
- Easy and fast one push-button operation.
- Gives analog indication (Forward & Reverse) of current transformer polarity.
- Tests various types of CTs.
- Works on easily available AA size alkaline batteries.
- Gives reliable performance even after continuous usage