
Super User
The digital insulation tester model MD-15KVR is Megabras' cutting edge insulation analyzer equipment and it is one of the most complete and sophisticated available in the international market. A powerful software allows for further analysis of tests results, including features such as graphical representation and automatic report generation. Its proven technology provides safe, reliable and accurate measurements of insulation resistances up to 15 TΩ, with 4 pre-selected test voltages, 500 V - 5 kV - 10 kV - 15 kV. Other test voltages may be selected in steps of 25 V, 100 V or 500 V.
A state-of-the-art microprocessor controls the equipment operation and enables the incorporation of advanced features which make measurements easier: auto-range selection, 16,000 readings memory, AC/DC voltmeter, automatic measurement of Absorption Index and Polarization Index, leakage current and capacitance measurement, timer enabling programming of test duration, configurable Pass-Fail test, Step voltage test, real time clock and calendar. Built-in chronometer, indicating elapsed time, in minutes and seconds, since the test started, up to 90 minutes.
Measured values are transmitted through the USB interface and are printed in the built-in printer as a registration of the performed test.The MD-15KVR has a Bluetooth interface that allows remote control of it through a Android device with BlueLogg software. With it you can take the photos of the objects under test and the GPS coordinates of each. It also allows you to record voice comments for each measurement.
Features
- Insulation resistances up to 15 TΩ
- Remote control through an Android app
- Automated tests:
- Absorption index
- Polarization index
- Capacitance
- Leakage Current
- AC/DC voltmeter
- Step Voltage Test
- Real time clock and calendar
- Built-in printer
- 16,000 readings memory
- Software for data management
Specifications
Specification | MD 15kVr | ||
Test voltage |
500 V, 5,000 V, 10,000 V, 15,000 V directly, one button selectable. 500 V to 10 kV in 25 V, 100 V or 500 V steps. DC, negative. |
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Maximum resistance reading | 15 TΩ @ 10 kV up to 15 kV | ||
DC Voltmeter |
15 V up to 1,000 Vdc. Accuracy: ±(5% of reading + 3 digits). |
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AC voltmeter |
15 V up to 1000 Vr.m.s. Accuracy: ±(5% of reading + 3 digits) |
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Overvoltage Category | CAT -III 600V | ||
Capacitance measurement |
50 nF up to 10 µF @ 500 V. 50 nF up to 5 µF @ 1,000 V. 30 nF up to 2 µF @ 2,500 V. 30 nF up to 1 µF @ 5,000 V. 30 nF up to 680 nF @ 10,000 V. 30 nF up to 680 nF @ 15,000 V. Accuracy: ±10% of reading ± 3 digits. |
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Short circuit current | Max. 2 mA | ||
Test voltage accuracy | ± 3% of nominal test voltages on GΩ | ||
Insulation tester basic accuracy |
± 5% of reading from 1 MΩ to 1 TΩ @ 15 kV. ± 20% of reading from 1 TΩ to 10 TΩ @ 15 kV. (for lower test voltages, the upper limit will be reduced proportionally) ± 20% of reading ± 5 digits from 10 kΩ to 100 kΩ. ± 10% of reading ± 5 digits from 100 kΩ to 1 MΩ. |
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Advanced features |
Dielectric discharge. Ramp test. Automated Polarization Index calculation. Automated Dielectric Absorption Ratio calculation. Programmable Pass-Fail test. Step Voltage Test. 16,000 Readings memory. Switchable filter to remove external noise interference. |
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 truns 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 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 | 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 % |
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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 1000 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 |
SCOPE introduces a high voltage test set, these high voltage testing sets comes with Power frequency AC high voltage /DC high Voltage test /AC-DC high Voltage test set for testing transformers, motors, insulators, cables etc. Further, these testing sets are capable of giving continuously variable HIGH VOLTAGE from zero to maximum rated output voltage. Wide range of up to 100 kV is available in user selectable combinations.
The product was designed considering the importance of safety of the operator and thus we provide independent Control Unit & High Voltage Transformer. The kit has various interlock to avoid any kind of accident while doing the high voltage test set.
Features
- Zero Start Interlock
- Open Ground Facility
- HT On / Off Lamp Indication
- Over Current Protection
- Short Circuit Protection
- Audio Visual Alarm
- Emergncy Stop Button
- Compact, Portable and Rugged
- Suitable for Field Use
Specifications
- Input Voltage : 230 V AC / 50 Hz
- Voltage & Current Display : Analog Meter or 3½ Digital Meter
- Measurements Accuracy : ±2% ±1 Digit
Ouput Voltage (kV) | Current (mA) | AC | DC | AC-DC |
3 | 200 | Yes | Yes | Yes |
5 | 200 | Yes | Yes | Yes |
10 | 100 | Yes | Yes | Yes |
15 | 100 | Yes | Yes | Yes |
20 | 50 | Yes | Yes | Yes |
25 | 50 | Yes | Yes | Yes |
30 | 25 | Yes | Yes | Yes |
40 | 25 | Yes | Yes | Yes |
50 | 10 | Yes | Yes | Yes |
60 | 10 | Yes | Yes | Yes |
70 | 10 | Yes | Yes | Yes |
Underground cable faults cannot be avoided due to many factors such as road widening, infrastructure improvement, digging carried out for repairs of other underground utilities etc.
These faults generally take long time to detect and hence long time to repair the damaged cables and restore the power supply. Long outages cause heavy production loss to industries, revenue loss to power distribution companies and inconvenience to general public. This calls for quick fault location and restoration of power supply in minimum possible time.
An ordinary fault locating kit comprising of diagnosis set and pin-pointing equipment can take long time to locate fault point. SCOPE offers pre-locator instruments that can give the fault distance to help the operator for reaching the spot quickly and pin-pointing the fault in a short time.
CFL PL2, new generation Cable Fault Pre-Locator from SCOPE is the ultimate solution for locating under ground cable faults in minimum time. It uses advanced technology for fault distance measurement which helps even an unskilled operator to locate the fault with accuracy.
The instrument has simple operating modes with which any types of fault on cable can be located with high accuracy. The CFL PL2 is cost effective solution for the job.
Features
- Measuring rage up to 16 km.
- Large LCD & User friendly operation.
- Adjustable Balance of instrument resistance tosuit the cable under test.
- Adjustable Gain for optimal waveform resolution.
- Facility to store & compare the waveforms.
- Memory to store up to 50 waveforms.
- Housed in rugged, IP class moulded case.
- PC connection via RS 232.
- Printer connection via RS 232 (Printer is optional).
- Compact and light weight.
- Large range of Propagation Velocity from 90 to 300m/ μS covers all type of cables including pilot and telecom able with any type of insulation.
Specifications
- Transmitting Pulse Amplitude :30V
- Transmitting Pulse width : 40ns-3.56μs
- Output impedance : 5-80Ω
- Measuring Range : 0-16 km
- Sampling speed :100MHz
- Resolution : TDR Mode : <±1m up to range <4km<± 4m for ranges >4 km ICM Mode: <± 4m up to range <4 km<± 16m for ranges >4km
- Propagation Velocity : 90-300m/ μs.This range covers all the cables including pilot and telecom cable with any type of insulation.
- Ranges : 500m,1km,4km,5km,8km and 16km. The operator can choose right range to get better resolution at fault point.
- Balance Adjustment : Under TDR mode it is required to balance the instrument resistance to suit the cable under test. With this control the instrument resistance can be varied between 5 ohms to 79 ohms.
- Memory :50 waveforms
- Display : 320x240 pixels
- Powered by Chargeable Li-ion Battery.
- Charging voltage : Input: 230V AC : Output: 8.4V±10% DC
- Operating time of rechargeable batteries: Approx. 5hr
- Operating Temperature : -10
Cable Fault Locator
Underground cable faults cannot be avoided due to many factors such as road widening, infrastructure improvement, digging carried out for repairs of other underground utilities etc.
These faults generally take long time to detect and hence long time to repair the damaged cables and restore the power supply. Long outages cause heavy production loss to industries, revenue loss to power distribution companies and inconvenience to general public. This calls for quick fault location and restoration of power supply in minimum possible time.
An ordinary fault locating kit comprising of diagnosis set and pin-pointing equipment can take long time to locate fault point. SCOPE offers pre-locator instruments that can give the fault distance to help the operator for reaching the spot quickly and pin-pointing the fault in a short time.
CFL PL3, new generation Cable Fault Pre-Locator from SCOPE is the ultimate solution for locating underground cable faults in minimum time. It uses advanced technology for fault distance measurement which helps even an unskilled operator to locate the fault with accuracy.
CFL PL3 is an advanced fault locating instrument. Three operating modes offered by the instrument enable the operator to locate all types of faults on any cable in minimum possible time.Complex and difficult to locate nature fault are located by CFL PL3 with high accuracy. These features classify the instrument to be a part of fault locating kit of Heavy Industries & Power Distribution Company.
Features
- Measuring rage up to 16 km.
- Large LCD & User friendly operation.
- Adjustable Balance of instrument resistance to suit the cable under test.
- Adjustable Gain for optimal waveform resolution.
- Facility to store & compare the waveforms.
- Memory to store up to 50 waveforms.
- Housed in rugged, IP class moulded case.
- PC connection via RS 232.
- Printer connection via RS 232 (Printer is optional).
- Compact and light weight.
- Large range of Propagation Velocity from 90 to 300m/μS covers all type of cables including-pilot and telecom able with any type of insulation.
Specifications
- Transmitting Pulse Amplitude : 30V
- Transmitting Pulse width : 40ns-3.56μs
- Voltage withstand : 400V AC (50Hz)
- Output impedance : 5-80Ω
- Measuring Range : 0-16 km
- Sampling Speed : 100MHz
- Resolution : TDR Mode and SIM Mode : <± 1m up to range <4km <± 4m for ranges >4 km ICM Mode : <± 4m up to range <4 km <± 16m for ranges >4km
- Propagation Velocity : 90-300m/μs.This range covers all the cables including pilot and telecom cable with any type of insulation.
- Ranges : 500m, 1km, 4km, 5km, 8km & 16km. The operator can choose right range to get better resolution at fault point.
- Balance Adjustment : Under TDR mode it is required to balance the instrument resistance to suit the cable under test with this control the instrument resistance can be varied between 5 ohms to 79 ohms.
- Memory : 50 waveforms
- Display : 320x240 pixels
- Charging voltage : Input: 230V AC: Output: 8.4V±10% DC
- Operating time of rechargeable batteries: Approx. 5hrs
- Operating Temperature : -10˚C to 50˚C
- Storage Temperatures : -10˚C to 70˚C
- Type of protection IP 54 : Splash proof and dust protected
- Dimensions : 330 x 305 x 152mm
- Weight : 3kg
XC 2100E, a Fault Location System based on principle of travelling wave detection is the solution to above problem. It can detect not only permanent fault, but also transient fault within one tower span accuracy (with best accuracy of ±50 meters). It is a kind of Line Monitor for continuous monitoring of transmission lines and gets triggered whenever travelling waves are generated on line due to switching, lightening or fault.
There are various methods employed for fault location detection. However the most suitable is Double End Method in which XC 100E are installed on both ends of the line, and are time synchronised by built-in GPS Module.
The data from both Units is brought to a Master Station where the Master Station Software XCF 2100E is installed. It automatically calculates the distance of fault from each end of line. Each XC 100E is capable of monitoring up-to 8 lines and the Master Station Software is capable of handling large no. of lines in a network.
Features
- TWFL system is free from influence of following factors which aff ect fault location accuracy of impedance based measurement methods like:
- Resistance of line
- Voltage & Current Transformer (CT & PT) errors
- Insufficient accuracy of line parameters due to neglecting of line transposition, distributed capacitance etc.
- Uncertainty of zero sequence impedance due to variation of earth resistance along the line corridor
- Load flow
- TWFL system monitors travelling waves at both ends of transmission lines & provides accurate fault location(fault distance, tower number) for all type of power lines including:
- AC, HVDC and Series Compensated Transmission Lines
- Lines with T branches
- Lines containing cable and overhead line sections
- Measuring fault distance of single phase to ground fault in non-eff ectively earthed Distribution System
- Travelling wave measurement technique used gives fault location within one tower span and with best accuracy of ±50 meters irrespective of line length, line parameters, fault resistance, CVT transients, conductor & tower geometry.
- Such accurate fault location greatly reduces the search time to find out the fault to help quick recovery of the system.
Specifications
Parameter | XC-2100E |
No. of Channels | 3-24 configurable for 1-8 line |
Input Module | AD Module: Direct current input from substation Protection CT |
AI Module with split core CT: Current Input through a split core CT | |
AI Module with external CT: Current Input through an external CT | |
AV Module: Input from substation VT | |
Length of Transient Record | 1 to 20ms Programmable |
Power | 85 to 264V, 50/60 Hz AC or 90 to 260V DC |
Sampling Frequency | 36 MHz, 12 MHz, 8 MHz, 6 MHz, 4.8 MHz, 4 MHz, 3 MHz, 2.4 MHz, 1.5 MHz, 1 MHz & 500 kHz |
Accuracy of Fault Location | Best Accuracy to ±50 meter |
GPS Accuracy | 100ns |
Memory | 8 GB |
Communication port | 2 Ethernet ports, 2 DB9 RS232, USB |
Communication protocol | IEC60870-5-104, IEC 61850 |
Immunity | Conforms to relevant IEC standards |
Operating Temperature | - 10°C - 55°C |
Storage Temperature | -40°C to 85°C |
Physical Dimension | 2U, 19” |
This is an ‘All in One’ solution for testing and analysing partial discharges in the insulation of high-voltage transformers, cables, GIS and electric machines. The DIMRUS ‘PD Analyser’ help diagnose their insulation state and find any type of defects very effectively.It can be used for temporary or constant monitoring of partial discharge in medium and high voltage systems and cables of any rated voltage.The PD Analyser is the most useful device for condition estimation of high-voltage insulation. This multipurpose device is designed for -
- Partial discharge measuring in high-voltage insulation at a high noise level.
- Fast detecting of the defects in different high-voltage equipment and identifying how dangerous they are.
Features
- It separates stray noise pulses and partial discharge pulses while comparing their frequency and time of arrival.
- It uses phase resolved partial discharge (PRPD) and time frequency analysis (PD- Cloud).
- It has the database of the most defects which can be upgraded with new diagnostic information.
- Danger level shows how severe the signal can be.
- It uses special algorithms to estimate if the received data is authentic.
- Automatic report generation on the condition of the insulation of the high-voltage equipment.
Specifications
Parameters | PD Analyser 3 | PD-Analyzer HF/UHF |
Sensor options | HF, UHF | HF, TEV, UHF |
HF discharge pulse frequency | 0.1 to 20 MHz | |
UHF discharge pulse frequency | 200- 1500MHz | |
HF discharge amplitude | 20 to 100000pC | |
UHF discharge amplitude | -70dBm to -25dBm | |
Computer connection | USB, Wi-Fi | USB |
Supply voltage | 90 to 260V AC | |
Operating temperature range | -10 to 50 | |
Dimension | 222 x 160 x 45 mm | 520 x 435 x 230 mm |
Weight | 12 Kg | 25Kg |
PD Defect Location in High-Voltage Equipment Insulation by Acoustic Sensors To act on deteriorating insulation the source of PD must be known.The insulation defects produce partial discharges, which emits electrical impulses, radiation of electromagnetic waves as well as acoustic signals.The AR700 measures acoustic signals with multiple sensors spread over the transformer. Then the software determines the failure location using the time difference of all incoming signals. Finally, these coordinates are shown in a 3D model of the transformer. AR700 device is used for measuring of acoustic signals on the external surfaces of gas-insulated breakers and substations, power transformers and other tank high-voltage equipment. The acoustic signals are caused by partial discharges in the insulation, which is the sigh of the defects.The advantage of “AR700” device is the quick installation of the acoustic PD sensors on the external surface of high-voltage equipment tank. The sensors have magnetic holder that is why there is no need to de-energize the equipment for the sensors installation. “AR700” device has 4 syn-chronic channels for acoustic signal measurement. This gives the possibility not only to find the defects in the insulation, but also to locate them. The location function of the “AR700”device is unique for acoustic devices.
Features
- The signal analyses and the PD zone location could be carried out both in manual and automatic modes.
- Software calculates the fault location based on the time difference between the incoming signals.And report is generated about PD source location.
- Convenient and handy through light weight, small size and battery operation.
- Can be used for multiple assets like Transformers, CTs, GIS, Cables etc.
- Defect type identification by synchronised measurement of PD
Parameter | AR700 |
Acoustic channels for PD measuring | 4 |
Frequency range of acoustic sensors | 30 - 300 kHz |
High-frequency channels for PD measuring | 1 |
Frequency range of high-frequency sensors | 0.1 - 20 MHz |
LCD resolution | 480x272pixel |
PC connection | USB |
Operating temperature range | -20 to +60 ºc |
Humidity | <98%, noncondensing |
Operating time from build-in accumulator | 8 hours |
Device weight, without sensors | 1.1 kg |
Dimensions of transportation case | 520x435x230mm |
Device weight in carrying case | 12kg |
The DIMRUS DIM-Loc-4 is a multipurpose device equipped with FOUR sensor technologies- Acoustic, RFCT, TEV and UHF. This makes this device very unique and versatile for use in both AIS as well as GIS and for a varieties of equipments in these substations.
The device is most effective for PD measurement in –
- Power transformers
- Instrument voltage transformers and current transformers
- Switchgears and Gas-Insulated switchgears
- Cables and joints
- Insulators of various types
Parameter | DIM-Loc-4 |
Number of measuring channel | 03 |
Acoustic Channel | 30 – 300kHz |
HF Channel | 0.5 - 30MHz |
UHF Channel | 200 – 1500MHz |
sensitivity | 10 – 100000pC |
LCD resolution | 480 x 272 pixels |
PC interface | USB |
Operating Temperature | -20°C to +50°C |
Dimension | 220 x 170 x 35 |
Weight of Device | 1 Kg |
Weight with all the accessories in case | 12 Kg |
SWITCHGEAR AND CABLE MONITORING SYSTEMS.
The portable multipurpose 3i device (Intellectual Insulation Indicator) is for eff ective high-voltage equipment insulation monitoring on-line. The 3i device measures and analyses partial discharges (PD). For eff ective PD measurement and noise rejection, there are two types of sensors used in the device: the acoustic sensor and the TEV sensor. Both the sensors are built into the device case, and so do not need any connection cables. The device is supplied in a strong metal case; at the faceplate there are the colored screen and two buttons: power button and function button.
Features
- 6 - 35 kV switchgears of various designs;
- Terminations and joints of cables;
- High-voltage gas-insulated equipment (Gas-Insulated switchgear (GIS)) of any rated voltage.
- The tanks of power transformers, breakers, etc.
- The multipurpose 3i device is for on-line insulation condition estimation in the following equipment:
Specifications
Parameter | 3i |
In-built PD sensors | acoustic, TEV |
In-built acoustic sensor frequency range, kHz | 40 ± 2 |
In-built TEV sensor frequency range, MHz | 10 - 100 |
LCD resolution, pixels | 240 x 320 |
PC connection | USB |
Battery life, hours | 10 |
Operation temperature range, °C | -20 ÷ 40 |
Device dimensions, mm | 187 x 78 x 43 |
Weight, kg | 0.6 |