Transformer Comparators
-
product
Transformer Test Panel/ Setup
This is a common test panel for distribution/ power transformers of different specifications. The user can perform most of the factory tests, as per the relevant IS standard for the transformers. The panel consists of power analyser, meters for high voltage test, meters for induced voltage test etc, control for all the tests, protection and interlock circuits so that a single panel can be used to conduct a number of tests using only one dimmerstat and the associated devices
-
product
Transformer DC Winding Resistance Tester
HTZZ-5A / 230
Wuhan Huatian Electric Power Automation Co., Ltd.
Applicable for transformer to submit the dc resistance testproject around group in pick up and overhaul project.
-
product
Transformer Turns Ratio Testers
Transformer turns ratio testers from TRT series are DV Power instruments mainly designed for the measurement of power transformer turns ratio. Also, they measure transformer excitation current and phase shift. Special tests, such as automatic vector group detection and magnetic balance, can be performed on three-phase transformers and three-phase autotransformers.All models, except TRT03 series, have a built-in true three-phase power source, which is necessary for testing turns ratio of transformers with special configurations, such as phase-shifting, rectifier, arc-furnace, traction transformers, etc.DV Power turns ratio testers can output various test voltages for different applications. From the extremely low test voltage of 1 V AC that enables turns ratio verification of the majority of current transformers, up to the highest test voltage of 500 V AC that provides the most accurate turns ratio testing of power transformers used in power generation and transmission. By using the external booster, test voltage increases up to 5 kV AC in order to successfully test capacitive voltage transformers.All DV Power turns ratio testers have a built-in tap changer control unit. Because of that, it is possible to control the on-load tap changer (OLTC) directly from the device. In order to make the most out of this feature, the instrument and included DV-Win software can be programmed to do everything automatically – running turns ratio tests, changing OLTC tap positions, and saving results. This option significantly facilitates and shortens the turns ratio testing time.TRT turns ratio testers use the same set of cables as three-phase winding ohmmeter & tap changer analyzers from the TWA series. Consequently, it enables one-time cable setup for performing eight tests:turns ratioexcitation currentphase anglemagnetic balancevector group detectionwinding resistanceon-load tap changer DVtestand demagnetization.
-
product
Direct Winding Transformer Monitors
Real time comparison of calculated and direct winding temperatures
-
product
Variable Transformer DC Power Supplies
Variable DC power supplies are AC to DC power supplies with a variable DC output. The output can be varied with a Variable Transformer (also known as variac). The Variable Transformer can be adjusted manually or with a motorized control. The AC input power can be single phase or three phases. With single phase AC input, the DC output ripple is very high (50%). With three phase AC input, the DC output ripple is low (5%). This would be a key benefit for selecting three phase AC input instead of single phase.
-
product
Test Equipment for Instrument Transformer
is desirable for measuring ratio errors and phase angles of low current (voltage) transformers used in electric devices, such as watt hour meters, smart meters, digital current meters, and transducers, etc.
-
product
Vertical Space Transformers
ST
The Space Transformer (ST) is an integral part of the probe card, utilized between the probe head and the PCB. Nidec SV Probe provides a wide variety of space transformation options including: • WST™ (Wired Space Transformer) • MST™ (Modular Space Transformer) • MLC (Multi-Layer Ceramic) • MLO/Mini-PCB (Multi-Layered Organic) • Multi-Site MLO Reflow of Package Substrate • MLC with MLTF to 50µm PitchOne of the main priorities for Nidec SV Probe is the internal development and manufacture of our own probe card components. We now offer in-house manufactured space transformer technologies with shorter lead time and competitive pricing. Contact your sales representative to learn more about our internally manufactured STs or any of our other ST technologies.
-
product
Transformer Capacity Load No-load Tester
HTRS-V / 261
Wuhan Huatian Electric Power Automation Co., Ltd.
High precision instrument used in transformer capacity, no-load, load and other characteristic parameters measurement.
-
product
Automatic Transformer Test System
TH2829AX
Changzhou Tonghui Electronic Co., Ltd.
*Number of Test PIN: 20*Frequency: 20Hz-200Hz, Resolution: 0.5mHz*Signal Level: 50mV-2Vms (Option 2nv-10Vms)*Test Speed: max 13ms
-
product
Automatic Transformer Comprehensive Test System
TH2837LX
Changzhou Tonghui Electronic Co., Ltd.
Automatic Transformer Comprehensive Test System
-
product
Current Transformer Testers
Vanguard Instruments Company, Inc.
Performs CT excitation, current-ratio, polarity, and phase angle testsMeasures insulation resistance and winding resistance of the CT seconday windingsMeasures the CT's secondary burdenTest record header information including company, substation name, circuit ID, manufacturer, CT serial number, operator name, and test record-commentsBuilt-in 4.5-inch wide thermal printerPlot Multiple Saturation CurvesStores up to 128 CT test plans and 140 test records internallyUSB, Bluetooth, and USB Flash drive interface
-
product
Elcometer Rubert & Rugotest Surface Comparator
129
The Elcometer 129 Surface Comparators are available in two models to suit your requirements.
-
product
Fully Automatic Transformer Winding Resistance Tester
Measure DC resistance of transformers windings etc. Introduction: The NMC ''TDR'' is a high precision, new generation, light weight large output current and micro-processor controlled tester. This replaces old DC wheat stone bridge and double arm bridge for measurement of DC resistance. ''TDR'' adopts new advanced test current power supply technology, four terminal measurement, digital display of resistance value and test current. ''TDR'' is powered by 220V AC mains single phase supply. The measurements are accurate as the test current is highly stable. High automation is achieved with automatic discharge warning.Principle: The constant current generated is fed to the resistance under test through the current terminals and the voltage drop across the resistance under test is measured and displayed in ohms. A true four terminal measurement is used to eliminate the need for lead resistance compensation.
-
product
Standard Current Transformers
Measurements International Ltd.
Single Range, Highest Permeability, Wide Measurement Range, Negligible Current Errors, High Accuracy.
-
product
Current Transformer Test Set
Vanguard Instruments Company, Inc.
The EZCT-2000C is Vanguard’s third-generation microprocessor-based current transformer test set. Designed specifically for CT testing, the EZCT-2000C has the following outstanding features that can greatly increase productivity and save time during the commissioning stage:
-
product
Split type AC Current Transformer
CTF-100T
MULTI MEASURING INSTRUMENTS Co., Ltd.
*1A output for metering application.*Wire stopper is equipped for the slipping protection.*The special connector is not necessary as the output terminals are provided.*Open circuit protection and nonflammable plastic material.
-
product
Transformer Preamplifier
SR554
Stanford Research Systems, Inc.
The SR554 is a low-noise, transformer-coupled preamplifier optimized for source impedances between 0.05 Ω and 1 kΩ. With an input noise of only 0.1 nV/√Hz, the SR554 can be used in a wide range of low-noise applications.
-
product
ANSI Potential Transformer Burdens
The ANSI Potential Transformer Burden Model PB-96-ANSI is designed for loading the Voltage transformers during accuracy tests as per ANSI standard C57.13. The PB-96-ANSI is a dual input ANSI burden providing the inputs of both 120V & 69.3V. It can be used along with the ELTEL Automatic Instrument transformer Test Set. AITTS-98 to test VTs as per ANSI standards.
-
product
FPGA Fast Fourier Transformation (FFT)
eXpert / Fast Fourier Transformation
Fourier Transform Analysis is Advanced On-board FPGA Technology a powerful signal-processing technique used in a wide variety of applications. GaGe’s eXpert FFT firmware allows CompuScopehardware to perform Fourier Analysis within its on-board processing FPGA.
-
product
MicroPhase I LRP - Dual Phase Voltage Detector / Phase Comparator
MP1-02P
Hachmann Innovative Elektronik
MicroPhase I LRP is an easily operated phase comparator, dual voltage detector and maintenance tester. Its automatic, thorough self-test ensures reliable function. The permanently enabled interface-testers warn against defect interfaces. Thanks to the "LRP-switch" the threshold value can be lowered from 2,5 µA (HR, MR, LR and LRM) to 1,0 µA (LRP).
-
product
Fully Automatic Transformer Oil Acidity Testing Kit
NMC offers Fully Automatic Transformer Oil Acidity Testing Kit
-
product
Transformer Performance Tester
JYM
JYM insulation resistance tester is used for on-site insulation resistance measurement. The instrument has built-in positive and negative bipolar high-voltage power supplies, with large output power and strong load capacity. It is suitable for insulation resistance measurement of samples with large capacitance, such as power transformers and cables.
-
product
Optical Comparator
Golden Units
The use of the Golden Units is the easiest way to ensure that your production devices are inspected to the accuracy you expect. The use of an optical comparator brings into play the subjectivity of the operator and errors induced by bending leads on real parts during handling by the operator.
-
product
Transformer On-Load Tap-Changer Tester
HTBYC-3000 / 256
Wuhan Huatian Electric Power Automation Co., Ltd.
It is mainly used for measuring the transition waveform, transition time, transient resistance of transformer on-load tap changer, three-phase synchronism, etc.
-
product
Transformer Ratio Meters / TRM-11
TRM-11
UDEYRAJ ELECTRICALS PRIVATE LIMITED
Fully automatic: No manual balancing. Automatic measure transformer group. Automatic calculation of ratio error.
-
product
Automatic Transformer Test System
TH2840NX
Changzhou Tonghui Electronic Co., Ltd.
■ The test speed is as high as 1000 times/s (>10kHz), without relay action time ■ Test level up to 20Vrms ■ The bias voltage is built-in ±40V/±100mA/2A ■ Up to 288 test pins (only TH2840NX) ■ Industry-friendly user experience: Linux bottom layer, built-in help file
-
product
Standard Current Transformer
HL / 640
Wuhan Huatian Electric Power Automation Co., Ltd.
It is used as the calibration standard of current transformer in the error test of transformer.
-
product
High Quality Transformer Oil Dielectric Strength Tester
AS-023A
Chongqing Assen Power Equipment Co., Ltd
AS-023A Series High Quality Intelligent Transformer Oil Dielectric Strength Tester is specially designed for testing dielectric strength (Breakdown Voltage) of transformer oil. The breakdown voltage (dielectric strength) is one of the most important parameters of transformer oil, it is a rule of the voltage withstand. The value of breakdown voltage (dielectric strength) indicates whether the oil contains water, impurity and electric particles, and you’ll know the oil value via the breakdown voltage (dielectric strength).
-
product
Distribution Transformer Tester
NDB-DOC™
The NDB-DOC™ is a test instrument designed for distribution networks transformers from 10kVA to 2500kVA. It can determine the presence of short circuits or an open circuit in the distribution transformer primary winding & also short circuits on the secondary winding. The NDB-DOC™ is designed to be operated from an arial device or from the ground at the end of a hot stick without disconnecting the transformer’s secondary windings.
-
product
Single-Phase Transformer Winding Resistance Meters
RMO-TD Series
Using the most advanced switch-mode technology available today, the RMO-TD series is ideal for winding resistance measurements of inductive objects. Transformer resistance meters and tap changer analyzers are perfect for testing:transformer windings (power transformers, distribution, autotransformers),all types of tap changers,generators,electrical motors,high-current busbar joints,cable splices,and welding joints.In addition, transformer demagnetization can also be done with all RMO-TD instruments.The RMO-TD series contains 3 models, with maximal test currents from 25 A (RMO25TD) to 60 A (RMO60TD).The three independent voltage sense channels enable testing of three windings in series. This enables measurements of winding resistance in every tap position of an on-load tap changer without discharging between the tests.All RMO-TD transformer resistance meters have a built-in tap changer control unit. It enables remote control of on-load tap changer (OLTC) directly from the device. In order to make the most out of this feature, DV-Win software is included which can be programmed to do everything automatically – running winding resistance tests and changing OLTC tap positions.The DV-Win software also enables control and observation of the test process, as well as saving and analyzing the results on a PC. It provides a test report, arranged in a selectable form as an Excel spreadsheet, PDF, Word, or ASCII format. Additionally, DV-Win measures and calculates the OLTC transition time, the ripple and the winding resistance for each tap changing operation. The software can also perform the calculations necessary for the “Heat Run” test.All results can be exported in the report format.
