Products

Capacitance & Tan-Delta Measuring Equipment along with its accessories is suitable for testing motors, Power Transformers, H.V. Bushings, Generators, Power Capacitors, cables etc. at power frequency. Periodic measurement of dissipation factor & capacitance on new solid insulators and those on long service period produces comparative result about the trend of deterioration of insulation resistance before insulation breakdown occurs.
Thus, the set is ideal to conduct routine diagnostic tests on solid insulating components, equipment required for High Voltage generation, Transmission and Distribution.

The Set is in four units:
i. Capacitance & Tan-Delta Measurement Bridge
ii. High Voltage AC Power Supply Control Unit
iii. High Voltage AC Power Supply Transformer Unit
iv. Standard Capacitor

TYPE: IRPI5KMN

This apparatus is perfectly suitable for diagnostic testing i.e. insulation resistance and polarisation index, of a wide variety of heavy duty electrical equipment & system like transformers, high voltage insulators, power cables, motors, electrical installation etc.

Input : 240 V + 10%, 50Hz. ( + 3%), single phase AC.

Output(s)
[a] Test voltages: Selectable in four different ranges i.e. 500V, 1000V, 2500V and 5000V DC. Metering: 41/2 digital panel meter

[b] Resistance measurement done in analog meter:

Resistance measurement done in digital meter:
50GΩ for all test voltages.

[c] Capacitance measurement: 100 pF to 20.0 micro farad
Metering: 31/2 digit module.
[d] Time measurement range : 0 - 999.9 sec.

IBL" make High voltage testing sets are suitable for Power frequency AC high voltage test on transformers, motors, insulators, cables etc. The sets are capable of giving continuously variable AC HIGH VOLTAGE from zero to maximum rated output voltage.

Input: Generally, 230 Volts, 50Hz, single phase AC, upto 10KVA & 400/415V, two phase out of three
phases for sets beyond 10KVA.
However, we also manufacture AC H.V. sets workable on other input voltage at extra cost.

Output: Continuously variable from zero to maximum rated output voltage.

Capacity: Spread over a wide range of sets from 2.5KV to 300KV AC having capacities from several VA to hundreds of KVA.
Duty cycle: Intermittent i.e., 5 minutes ON, 10 minutes OFF. However, test sets of continuous or other duty cycles can also be manufactured at extra cost.

Metering: Analog voltmeter & milliammeter/ammeter. Digital meters may be provided at extra cost.

Protection: Tripping mechanism for protecting the H.V. transformer against over loading. The tripping mechanism can be adjusted at 25,50 & 100% of the rated current by a rotary switch. Below 100mA &
above 20mA two adjustable tripping ranges are at 50% &100%, while for sets of 20mA capacity or below only 100% is adjustable [If required by the users tripping current can be made adjustable at other values, at extra cost].
Apart from tripping mechanism, Zero start interlocking along with Overvoltage alarm & indication are provided.

Mode of operation: Sets are generally, motor operated beyond 20KVA & 50KV. Motorisation facility can be available below the specified value at extra cost.

H.V Transformer:
H.V.Transformer used for the testing purpose can be oil cooled indoor type or Resin cast dry type as found suitable or particularly required by the customer. The H.V. winding of the high voltage testing transformers is of graded insulation, one end of which is grounded through milliammeter and tripping device while the other end remains in floating condition as H.V. terminal. These testing transformers are specially designed to withstand frequent intermittent spark over or momentary short circuit conditions under which such testing
transformers are supposed to operate.

Discharge Rod: For device under tests having large capacitance, discharge rod may be provided at an extra cost.

While sending enquiry for quotation or order please specify the following:
Input voltage and frequency.
Maximum output voltage.
Capacity.
Type of transformer –Oil cooled or Cast Resin
Duty Cycle.
Mode of operation: Manual/Motor operated.
Any other details you find important to be specified.

IBL" make High voltage testing sets are suitable for Power frequency AC high voltage test on transformers, motors, insulators, cables etc. The sets are capable of giving continuously variable AC HIGH VOLTAGE from zero to maximum rated output voltage.

Input: Generally, 230 Volts, 50Hz, single phase AC, upto 10KVA & 400/415V, two phase out of three
phases for sets beyond 10KVA.
However, we also manufacture AC H.V. sets workable on other input voltage at extra cost.

Output: Continuously variable from zero to maximum rated output voltage.

Capacity: Spread over a wide range of sets from 2.5KV to 300KV AC having capacities from several VA to hundreds of KVA.
Duty cycle: Intermittent i.e., 5 minutes ON, 10 minutes OFF. However, test sets of continuous or other duty cycles can also be manufactured at extra cost.

Metering: Analog voltmeter & milliammeter/ammeter. Digital meters may be provided at extra cost.

Protection: Tripping mechanism for protecting the H.V. transformer against over loading. The tripping mechanism can be adjusted at 25,50 & 100% of the rated current by a rotary switch. Below 100mA &
above 20mA two adjustable tripping ranges are at 50% &100%, while for sets of 20mA capacity or below only 100% is adjustable [If required by the users tripping current can be made adjustable at other values, at extra cost].
Apart from tripping mechanism, Zero start interlocking along with Overvoltage alarm & indication are provided.

Mode of operation: Sets are generally, motor operated beyond 20KVA & 50KV. Motorisation facility can be available below the specified value at extra cost.

H.V Transformer:
H.V.Transformer used for the testing purpose can be oil cooled indoor type or Resin cast dry type as found suitable or particularly required by the customer. The H.V. winding of the high voltage testing transformers is of graded insulation, one end of which is grounded through milliammeter and tripping device while the other end remains in floating condition as H.V. terminal. These testing transformers are specially designed to withstand frequent intermittent spark over or momentary short circuit conditions under which such testing
transformers are supposed to operate.

Discharge Rod: For device under tests having large capacitance, discharge rod may be provided at an extra cost.

While sending enquiry for quotation or order please specify the following:
Input voltage and frequency.
Maximum output voltage.
Capacity.
Type of transformer ?Oil cooled or Cast Resin
Duty Cycle.
Mode of operation: Manual/Motor operated.
Any other details you find important to be specified.

This test set provides a continuously variable output voltage at double frequency to test the insulation between turns of coils, layer to layer, terminals of windings with either uniform or graded insulation and also between the windings and earth, with graded insulation of both Distribution and Power transformers.
An alternating voltage of sine wave form (as much as possible) at double frequency (100 Hz.) and double in amplitude can be applied at one side of the transformer under test while the windings, which are not connected to the source of excitation, are left on open circuit. This higher frequency is considered to avoid excessive excitation current during the testing.

Voltage source:

To generate a voltage at 100 Hz., one 3-phase squirrel cage induction motor is given a supply through a star-delta switch. This motor drives the slip ring induction motor (generator). A variable voltage is also supplied to the generator thereby producing double frequency, which along with the output voltage of the generator is available across the terminals of the Set.

Selection chart:

The impulse voltage generated in the electric power transmission and distribution system due to lightning or switching phenomena can be simulated by generation of impulse voltage of particular shape in the laboratory. This Test Set can be used to perform impulse voltage test on electrical equipment chosen as sample to check the insulation coordination of the same.

Capacity: As per customers’ requirement. However, we generally manufacture set upto 2.5KJ Max.
(2500Joules).

Nature of Impulse wave: 1.25/50ms.
The above multistage Impulse generator will be consisting of following major sections.
DC charging Unit capable to provide continuously variable D.C. voltage of either polarity to charge the
generator capacitor.
Charging resistors are stacks of non-inductive high value resistance, suitable to work at the rated high
voltage, to keep the charging current within safe limit.
Generating capacitor is condenser bank arranged vertically one over the other along with the
corresponding spark gaps aligned properly. Spark gaps will be between spheres or hemispheres of 50 to
150 mm diameters. Capacitor bank will be designed to undergo efficient charging / discharging operation
and capacitance value will be such, that on dead short circuit they will be capable of giving impulse
of at least the specified power in Joules.

Triggering system for the spark gap will be provided.

Wave shape controlling resistor & capacitors

Voltage measurement

A voltage spanider of either resistor type or capacitor type will be provided. An oscilloscope with Data recording arrangement or a storage oscilloscope can be connected across the spanider for measurement
of voltage across the test object.

Protection:
The D.C. charging unit will be provided with zero start interlocking, over load, overvoltage protection.

Type: UONT100A

This Test Set is capable to measure low resistance like switch contacts, breaker contacts, busbar splices, joints, fuses, low inductive windings etc. by circulating high value of D.C. through the contact/junction and measuring D.C voltage drop (4 terminal method) which, sent to instrument amplifiers , thereby being displayed on resistance meter.

Technical Features:

Input: 230 Volts + 10%, 50 Hz., single phase AC.
Accuracy: + 1% of reading.
Metering: 2-nos., 31/2 digit LED module for resistance measurement & current measurement.
Protection against overload & short-circuit.

These are the test benches incorporating control & measurement circuitry necessary for testing single phase as well as three phase transformers of several VA to MVA rating & voltage class of 11KV/433V,as well 33KV/11 KV, after manufacturing, repairing, reconditioning. Following tests can be done by these Test Sets.

• No load Test from L.T. side
  Input voltage to L.T. side.
  No load current.
  No load or excitation loss.
  
• Load Test
  Impedance voltage.
  Rated L.T. & H.T. current.
  Conductor loss
  
• Temperature rise Test
  Injection only at equivalent short circuit current (Temperature/Time measurement scheme is available
  at extra cost).
  
• Polarity
  
• Phase sequence
  
• Ratio error

Input: 415 volts, 3 phase 4 wire, 50Hz, AC.

Range of equipment:

Protection:

• Foot switch interlock.
  
• Zero start interlock.
  
• Over load and short circuit.
  
• A remote interlock connector to interlock the test cage area.

Metering:
High accuracy precision Digital measurement instrumentation (voltmeter, ammeter & wattmeter) scheme with metering accuracy of + 1% is incorporated. Suitable transducers are used for range transformations.

Auxiliary step up transformer:
Usually, these sets are made for 11KV/433-voltage class. However, additional step up transformers are available at extra cost to suit the test sets for 33KV/11KV class.

Apart from the existing Types, sets as per requirement of customer may also be manufactured.

?IBL? make Oil Test Set is ideal for testing of Breakdown/withstand test of transformer and circuit breaker oil, in accordance with IS 6792:1992 for oil testing.

Input: 230V + 10%, 50Hz., 1 phase AC.

Selection chart:

Capacity: 10mA in the HT side for all sets.

Transformer: H.V. Transformer used in the Test set is cast resin type of graded insulation with center point of H.V. winding grounded.

Protection: Zero start interlocking & door-interlock is to be provided. Snap acting automatic tripping of H.V. circuit in case of overload or breakdown of oil sample under test.

Overvoltage indication (audio & visual) is also incorporated.

Metering: Analog meter for manually & motor operated sets. Digital display for automatic sets.

Test Vessel: As per IS 6792:1992. A gauge is provided along with the cell to adjust the gap.

Features that can be provided at extra cost for manually & motor operated sets:
Capacity other than standard setting, Digital Metering, Stirring arrangement, Mushroom electrode, Cylindrical electrode.

?IBL? make Oil Test Set is ideal for testing of Breakdown/withstand test of transformer and circuit breaker oil, in accordance with IS 6792:1992 for oil testing.

Input: 230V + 10%, 50Hz., 1 phase AC.

Selection chart:

Capacity: 10mA in the HT side for all sets.

Transformer: H.V. Transformer used in the Test set is cast resin type of graded insulation with center point of H.V. winding grounded.

Protection: Zero start interlocking & door-interlock is to be provided. Snap acting automatic tripping of H.V. circuit in case of overload or breakdown of oil sample under test.

Overvoltage indication (audio & visual) is also incorporated.

Metering: Analog meter for manually & motor operated sets. Digital display for automatic sets.

Test Vessel: As per IS 6792:1992. A gauge is provided along with the cell to adjust the gap.

Features that can be provided at extra cost for manually & motor operated sets:
Capacity other than standard setting, Digital Metering, Stirring arrangement, Mushroom electrode, Cylindrical electrode.

?IBL? make Oil Test Set is ideal for testing of Breakdown/withstand test of transformer and circuit breaker oil, in accordance with IS 6792:1992 for oil testing.

Input: 230V + 10%, 50Hz., 1 phase AC.

Selection chart:

Capacity: 10mA in the HT side for all sets.

Transformer: H.V. Transformer used in the Test set is cast resin type of graded insulation with center point of H.V. winding grounded.

Protection: Zero start interlocking & door-interlock is to be provided. Snap acting automatic tripping of H.V. circuit in case of overload or breakdown of oil sample under test.

Overvoltage indication (audio & visual) is also incorporated.

Metering: Analog meter for manually & motor operated sets. Digital display for automatic sets.

Test Vessel: As per IS 6792:1992. A gauge is provided along with the cell to adjust the gap.

Features that can be provided at extra cost for manually & motor operated sets:
Capacity other than standard setting, Digital Metering, Stirring arrangement, Mushroom electrode, Cylindrical electrode.

?IBL? make Oil Test Set is ideal for testing of Breakdown/withstand test of transformer and circuit breaker oil, in accordance with IS 6792:1992 for oil testing.

Input: 230V + 10%, 50Hz., 1 phase AC.

Selection chart:

Capacity: 10mA in the HT side for all sets.

Transformer: H.V. Transformer used in the Test set is cast resin type of graded insulation with center point of H.V. winding grounded.

Protection: Zero start interlocking & door-interlock is to be provided. Snap acting automatic tripping of H.V. circuit in case of overload or breakdown of oil sample under test.

Overvoltage indication (audio & visual) is also incorporated.

Metering: Analog meter for manually & motor operated sets. Digital display for automatic sets.

Test Vessel: As per IS 6792:1992. A gauge is provided along with the cell to adjust the gap.

Features that can be provided at extra cost for manually & motor operated sets:
Capacity other than standard setting, Digital Metering, Stirring arrangement, Mushroom electrode, Cylindrical electrode.

?IBL? make Oil Test Set is ideal for testing of Breakdown/withstand test of transformer and circuit breaker oil, in accordance with IS 6792:1992 for oil testing.

Input: 230V + 10%, 50Hz., 1 phase AC.

Selection chart:

Capacity: 10mA in the HT side for all sets.

Transformer: H.V. Transformer used in the Test set is cast resin type of graded insulation with center point of H.V. winding grounded.

Protection: Zero start interlocking & door-interlock is to be provided. Snap acting automatic tripping of H.V. circuit in case of overload or breakdown of oil sample under test.

Overvoltage indication (audio & visual) is also incorporated.

Metering: Analog meter for manually & motor operated sets. Digital display for automatic sets.

Test Vessel: As per IS 6792:1992. A gauge is provided along with the cell to adjust the gap.

Features that can be provided at extra cost for manually & motor operated sets:
Capacity other than standard setting, Digital Metering, Stirring arrangement, Mushroom electrode, Cylindrical electrode.

type: pdnt02

This Test Kit is used for non-destructive means of assessing the quality of high voltage transformers, motors, cables etc., which are used in generation & distribution of electric power.

The basic system consists of-
Discharge measuring module
Input : 230volts, 50Hz., single phase AC.
Measuring Range: 0 to 5,50,500,5000pC in different switchable ranges.
Discharge pulses can be detected and measurement can be done

in analog scale as well as in PC.

MATCHED MEASURING IMPEDANCE
In series with standard capacitor this forms a voltage spanider and decouples the high frequency signals to feed the discharge measuring module. The set is electrostatically shielded.

• Standard Capacitor: 100pf or 1000 pf.
  
• C.R.O. suitable for the above
  
• Calibrating Pulsar

OPTIONAL AT EXTRA COST:
40 kV AC high Voltage measuring system
Auxiliary Supply Voltage: 230 Volts, 50Hz, single phase, AC.
Range: 0 - 40 kV AC
Metering: 31/2 digital panel meter.

Type: tdrnt02

TDRNT02 measures dielectric parameters like D.C. resistivity, dielectric constant and loss factor of the insulating oil of transformers, circuit breakers etc.

Loss angle & dielectric constant MODE:
This mode can measure dielectric constant & dissipation factor (tanδ).

Resistivity mode:

his mode is provided with 500 V DC power supply with accuracy of + 5% to measure the resistivity of the sample under test.

Three Terminal oil CELL:

The cell is fabricated out of stainless steel and Teflon is the insulating material used for isolation of the three electrodes i.e. H.T. Electrode, Guard Electrode and Central Electrode.

Heating CHAMBER:

This chamber uniformly heats the test cell and sample under test upto desired temperature to a maximum limit of 1200 C.

Transformer Turns Ratio Meter is compact in size and is capable to measure actual turns ratio of different types of transformers like Distribution, Power, CT, PT, Auto-transformers, Control & Measuring transformers etc.

FEATURES:

• Suitable to measure percentage ratio error directly.
  
• Polarity indication by phase sensitive null detector.
  
• Additional 3 phase switch network for Type TTR1P3, TTR10P3 & TTR20P3.
  
• Direct ratio error measurement range + 1% of the range with resolution of 0.05 %.
  
• Direct ratio error measurement accuracy + 0.25% of the reading.
  
• Null indicator: Center zero microampere meter fed through electronic null detector.
  
• Digital meter may be provided at extra cost.
  
• Over load / Short circuit & HT/ LT reversal protection.
  
• Power supply input: 230 volts ? 10%, single phase, 50 Hz. AC.

This Test set is suitable to measure winding resistance of transformers, single or 3-phase, star or delta connected upto several MVA.Two independent displays read the resistance of both primary & secondary windings simultaneously. However, primary or secondary winding can also be measured separately.
DC Power source allows the selected current to flow through the winding /windings and the voltage developed across the winding are sent to instrumentation amplifiers, thereby displaying directly the ohmic value.

Technical Features:

Input Power Supply: 230V +10%, single phase, 50Hz. AC.
Accuracy: +1% of selected resistance range.
Display: 2 nos., 31/2 digit LED module for resistance measurement.

Protection:

• Protection against current lead disconnection while in use, Induction Kickback suppression, Snap acting overload protection.