Thursday, 03 December 2015 12:04 Written by

Pin Pointer

The most versatile Cable Fault Pin Pointer yet, SCOPE’s CFL PP3 is suitable for pin-pointing as well as route tracing of any type of power cable. For pinpointing it is used along-with CFL SG Series Surge Generators from SCOPE and for route tracing it is used along-with Audio Frequency Generator, CFL AG2 from SCOPE. Advanced technology with features like time lapse measurement makes it a tool that can tackle complicated faults easily. 

Ambient noise during pin-pointing has always been a problem. CFL PP3 with simultaneous display of magnetic and acoustic waveforms indicates the exact fault spot eliminating the above problem. It guides the operator about the lay of the cable under test during pin-pointing. The LCD display constantly gives information to the operator about any deviation of the cable route being followed. The instrument offers results based on vision. Thus the ground microphone becomes secondary tool to locate the exact fault spot.

The instrument incorporates separate route tracing circuit to be used with Audio Frequency Generator, CFL AG from SCOPE. The system has flexibility of coupling to the cable galvanically (direct connection) for isolated cable and inductively coupled if the cable is live. The depth of the cable under test is located with conventional triangulation method with precise accuracy. This system configuration can also be used to pin-point low resistance welded faults, where surge generator cannot be used.

Features

  • Can be used for both pinpointing as well as route tracing.
  • Both magnetic & acoustic inputs making pinpointing very convenient.
  • Digital filters to eliminate external influences.
  • Highly effective shielding against environmental noises.
  • Improved acoustic signal pick up features.
  • Highly sensitive magnetic signal pick up.
  • Large LCD display with backlit facility.
  • Internal Li-ion chargeable battery.
  • Specially made light weight case ensuring minimum strain to operator.
  • Water resistant and dust proof design.
  • User friendly and simple operation.

Specifications

  • Filter Frequency: 200Hz, 300Hz, 500Hz
  • Time Delay Resolution: 0.2ms
  • General
    • Filter: Digital
    • Accuracy: High Resistance Fault: 0.1m
    • Route Tracing: 0.2m
    • Low Resistance Fault: 2m
  • Amplification: >120 dB, adjustable
  • Headphone Output: 3.5mm
  • Power Supply: 7.4 V Lithium-ion rechargeable battery• Power Consumption: 3W
  • Charger: Input: 230 VAC±10% ; Output: 8.4 VDC
  • Environment: 0 to 50oC, 95% RH (Non-condensing)
  • Dimension: 230mmx140mmx170mm
  • Weight: 1.5kg

 

Thursday, 03 December 2015 12:04 Written by

SIM Filter

Cable Fault Secondary Impulse Filter CFL SIMF is mainly used for high resistance and flashing fault test for power cable with the voltage below 10kV, and for fault location with Secondary Impulse with conjunction of Pre-locator and HV surge generator .Latest fault locating technique for high resistance and flashing faults is Secondary Impulse Method (SIM).This method offers highly reliable results for faults on any type of power cable. It converts the faults to low resistance nature by creating arc across the fault. With the help of filter, the arc is sustained for extended period during which the pre-locator instrument CFL PL3 sends Time Domain Reflectometer (TDR) waves to the fault. These waves reflect back from the fault point and appear on the display as a short fault. This method gives precise result of fault distance for high resistance and flashing nature faults.

SIM filter SIMF is designed for mounting in a van for quick fault location. It can be mounted in a rack mounted system.

It is passive filter having own output power source. It uses the energy of the surge generator to create arc at the fault point.

A high voltage switch incorporated in the output circuit facilitates selection of SIM or ICM mode.

 

Specifications

  • Output Voltage: 1800 VDC, Negative Polarity
  • Arc Stabilization Time: ≥20 ms
  • HV Input: Max. 32 kV DC Negative Polarity
  • Input Power Supply: AC 220V±10%, 50Hz±10%
  • Environment: 0 to 50˚C, 95% RH (Non-condensing)
  • Dimension: 380mm x 280mm x 460mm
  • Weight: 15kg
Thursday, 03 December 2015 12:05 Written by

Sheath Fault Locator

Sheath Fault Locator is used for the identification of Sheath/earth faults which can get developed in any type of underground cable like LT or HT power cable or in unshielded multi core control cables. It can be a manufacturing defect or can get developed by improper handling during laying / external damage or any other reason due to which the metallic armour or cores develop leakage with the mass of earth. These faults can remain undetected for a long time as they do not hamper the working of the cable. However, this fault gets converted to a full-fledged fault

over a period of time.

CFL SFL can successfully locate sheath / earth faults on any type of cable. It offers different modes such as DC test / HV Test, Burning, pre-location and pin-pointing.

Features

  • Three manually selectable convince DC ranges for application.
  • Cable and cable sheath testing up to 5 kV between metallic sheath / armour and mass of earth.
  • Automatic sheath fault pre-location with high precision measuring bridge method.
  • Cable sheath fault pin pointing by pool of potential method / fall of potential method /potential difference method.
  • Burn mode for conditioning the sheath fault - Conversion of high-resistance faults in LT cables.
  • Maximum 400 mA current gives better results.
  • Extremely user friendly to calculate the fault distance; uses a micro-controller based fault distance calculator that enables the operator to get the pre-location measurements with precise accuracy.
  • Automatic discharging facility of cable under test, in case of power failure or after switching off.
  • Continues operation for extended period in case of pin-point difficult sheath faults.
  • Rugged construction and easy to carry on site.

Specifications

Parameter  Quantity 
 Power Supply  230V, ±10%, 50Hz, single phase
 Test Voltage  0-2.5Kv and 0-5kV DC continuously variable
 Test Current  200mA @2.5kV, 100mA @ 5kV
 HV range Selection  Manual 
 Indication

 On / off lamp indication

Analog moving coil meter for output voltage (kV) indication

Analog moving coil meter for output current (mA) indication

Over heat LED indication

Sheath voltage drop indication on DPM (0-1.9999V)

Fault pre-location distance on LCD display.

 Pulse ratio for pin-pointing  1:3 sec and 1:6 sec selectable on off time ratio
 Fault Distance Calculator  LCD display-16 x 2 characters with back light
 DPM power supply  6 V, 1.5 Ah rechargeable battery
 Over load Protection

 Main Input current MCB switch in Live

 

Safety Protections

Variac Zero inter-lock

Output cable Plug inter-lock

HV Switch inter-lock

Over Heat Protection

Emergency off switching

Earth Discharge Soft automatic discharge through in-built solenoid
Cooling system Air cooling
Operating Temperature 0°C to 50°C

Standard Accessories

  • 10 sq mm single core screen output HV cable with heavy duty brass clamps 5 meter length
  • Dual single core cable for pre-location 5 meter length
  • Two single core cable for pre-location 5 meter length
  • Mains supply connecting cord 3 meter
  • Yellow/green earthing cable 5 meter
  • External Battery charger for DPM supply
Thursday, 02 February 2017 05:30 Written by

CFL PL3

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

 

Thursday, 02 February 2017 08:27 Written by

CFL PL2

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

 

Friday, 07 August 2015 14:46 Written by

TRM25

winding resistance meter, specially designed for field testing as well as factory testing of large transformers up to 500MVA. Winding resistance value of transformer and rotating machine are directly displayed on 5.7” TFT display. TRM25 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 demagnetisation 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
  • Uses Kelvin’s 4 wire method for resistance measurement.
  • Designed to measure DC winding resistance of highly inductive objects like transformers, generators, motor etc.
  • 30V / 50V* DC open circuit voltage.
  • Simultaneous measurement of 1 / 2 / 3* windings.
  • Quick stabilization of test results
  • Direct readings of all channels on backlit LCD
  • Automatic back-emf discharge with indication
  • Simple setup and use.
  • OLTC discontinuity indication

*- Features available only in TRM25

Features only in TRM 25

  • Displays, prints and stores test reports in the form of text header and tabulated test results.
  • Stand-alone & PC control mode
  • Managed by powerful CTrans software to configure setup, conduct test, view & analyse results, generate test report.
  • Current range selection, enable / disable of channels, printing, downloading etc.
  • 25A / 10A / 5A / 1A / 0.1A / 0.01A DC current injection range. Resistance auto-ranging.
  • Inbuilt thermal printer for test results.
  • Temperature measurement channel and automatic temperature correction for winding resistance for copper & aluminum windings. Supplied with RTD temperature sensor.
  • OLTC dynamic test facility available optionally.

OLTC Feature

Tap changer failures account for more than 40 % of all failures on power transformers. OLTC failures are caused by degradation of OLTC contacts. SCOPE offers dynamic OLTC test facility with TRM 25 to identify weaknesses in OLTC assembly. The test is conducted in PC control mode at higher sampling speed of 10 KHz.

  • This test records variation in current flowing through the OLTC against time during tap change.
  • Gives % drop in current and transition time
  • The drop in current during OLTC transition indicates change in transition resistance.
  • I t is also possible to calculate transition time which shows healthiness of mechanism.
  • The test is very useful for assessing health of OLTC.

This optional feature extends the capability of the basic instrument making it complete test equipment for testing transformers.

Specifications

Parameter TRM14 TRM104 TRM25
Resistance Channels Two Two Three
Temperature Channel Not Available Yes
Current Ranges 1A, 0.1A, 0.01A 10A, 1A, 0.1A, 0.01A 25A, 10A, 5A, 1A, 0.1A, 0.01A
Maximum Resistance Range 2000Ω 2000Ω 2000Ω
Best Resolution 1μΩ 1μΩ 1μΩ
Accuracy Value ± 0.5% ± 2 digits
O/C Voltage 30V DC 50V DC
Protection Back EMF, Over Temperature, Accidental Disconnection of Lead
Discharge Automatic
OLTC Discontinuity indication Yes
 Temperature Correction No Yes
Display 4 Line 20 character backlit LCD for Resistance & Test Current  256 X 128 pixel, backlit graphic LCD for Resistance & Test Current
 Memory No  5000 results
 Inbuilt Printer No  Yes
 PC Connectivity No  Yes
Dimension 475 x 405 x 175 mm 475 x 405 x 230 mm 585 x 480 x 195 mm
Instrument Weight 10 kg 15 kg 20 kg
OLTC Dynamic Test No Yes (Optional)
Thursday, 05 May 2016 07:19 Written by

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 
Friday, 07 August 2015 15:12 Written by

TRM104

TRM Series precision Winding Resistance Meters are designed for field testing as well as for factory testing of large rotating machines & transformers up to 500 MVA. Winding Resistance values of transformers and rotating machines are directly displayed. These are portable winding resistance meters designed to work in live EHV switchyards up-to 765 kV. A backlit LCD with a user-friendly menu sets up the instrument for the test. These meters are protected against the back-emf offered by large inductive windings.

Features

  • Uses Kelvin’s 4 wire method for resistance measurement.
  • Designed to measure DC winding resistance of highly inductive objects like transformers, generators, motor etc.
  • 30V / 50V* DC open circuit voltage.
  • Simultaneous measurement of 1 / 2 / 3* windings.
  • Quick stabilization of test results
  • Direct readings of all channels on backlit LCD
  • Automatic back-emf discharge with indication
  • Simple setup and use.
  • Operation through keyboard and interactive menu
  • Supplied with rugged aluminium carrying case for enhanced transport worthiness.
  • OLTC discontinuity indication

*- Features available only in TRM25

 

Specifications

Parameter TRM14 TRM104 TRM25
Resistance Channels Two Two Three
Temperature Channel Not Available Yes
Current Ranges 1A, 0.1A, 0.01A 10A, 1A, 0.1A, 0.01A 25A, 10A, 5A, 1A, 0.1A, 0.01A
Maximum Resistance Range 2000Ω 2000Ω 2000Ω
Best Resolution 1μΩ 1μΩ 1μΩ
Accuracy Value ± 0.5% ± 2 digits
O/C Voltage 30V DC 50V DC
Protection Back EMF, Over Temperature, Accidental Disconnection of Lead
Discharge Automatic
OLTC Discontinuity indication Yes
 Temperature Correction No Yes
Display 4 Line 20 character backlit LCD for Resistance & Test Current  256 X 128 pixel, backlit graphic LCD for Resistance & Test Current
 Memory No  5000 results
 Inbuilt Printer No  Yes
 PC Connectivity No  Yes
Dimension 475 x 405 x 175 mm 475 x 405 x 230 mm 585 x 480 x 195 mm
Instrument Weight 10 kg 15 kg 20 kg
OLTC Dynamic Test No Yes (Optional)
Wednesday, 12 August 2015 12:45 Written by

MagD

SCOPE proudly introduces Step-Up Transformer - MagD, specially designed to cater the needs of testing of instrument Transformers. Before new systems are put into service or after any occurrence of fault, the instrument transformers need to be tested for their outputs. It is to be ensured that these instrument transformers are giving proper outputs to the protective relays.

MagD is used to plot excitation curves for instrument transformers. Inbuilt voltmeter and ammeter, eliminates the need of external meters for plotting of curves. It can also be used for de-magnetization of transformer cores and also turns-ratio tests can be conducted using MagD.

Thermal cutoff , Two-hand control and Variac Zero interlock is deployed for user safety and protection.

Features

  • Prepare excitation curves quickly and easily
  • Knee – point test of CTs
  • De-magnetize transformer cores
  • Conduct turns-ratio test of voltage transformers
  • Inbuilt voltmeter and ammeter eliminates the need of external meters
  • HV and LV outputs available separately
  • Online switching between HV and LV outputs
  • Visual Indicators for HV/LV output ON
  • Two-Hand control enhances user safety
  • Interlocking feature for Variac Zero position for user safety
  • Thermal cutoff for instrument and user safety
  • Supplied with specially designed High voltage cables and rugged carrying case

Specifications

Mains input supply 230V AC ± 5%, 50/60 Hz
Protection Thermal cutoff , Variac zero interlock, Two-hand control
Dimensions Instrument – 500 x 230 x 300 mm
Voltmeter 0 – 250 V AC for LV out
0 – 2.2 kV AC for HV out
Ammeter 0 – 10A AC for LV out
0 – 1A AC for HV out
LV output 0V to 250V AC , 8Amp ; continuous
HV output 0V to 2200V AC, 0.5Amp ; continuous
1Amp for 35 Sec, Rest time – 10 Minutes
Operating temperature 0 to 50 deg C
Humidity 5% to 95% RH, non-condensing
Weight 27 kg

Accessories

Description Quantity
Aluminium Carrying Case 1 No.
Input Power Supply Cable 2 meter 1 Set
LV Output Cable 5 meter 1 Set
HV Output Cable 5 meter 1 Set
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