Standard Transformers
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Product
Current Transformers
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Contrel Elettronica s.r.l. Company
We can supply current transformers (measure transformers, protection transformers and double ratio transformers, with analog output) with the following accuracy classes: 0.1, 0.2s, 0.5s; 1; 3. A wide range of combinations is available in our standard range with specific versions available upon request (other ratios, specific frequency, class or load). They are equipped with sealable terminal covers as standard.
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Product
High Frequency Current Transformer
HFCT
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The HFCT is a high frequency current transformer designed specifically for picking up partial discharge signals. It has a split core ferrite to allow retrospective fitting to earth straps without the need for disconnection. The durable body has a hinge and a quick release latch, making use quick and easy. The HFCT is constructed with an aluminium body to provide RF shielding and improved performance in noisy environments.
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Product
Standard Emission Monitoring System
CEMS-2000
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CEMS-2000 is a multi-gas monitoring system aimed to continuously and reliably measure emissions from various industrial combustions. The adoption of the hot-wet extractive method avoids the loss of content during sampling. The system is extendable with additional parameters upon request. All output signals proceed through the data acquisition system and then upload to the DCS or environmental authority server.
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Product
CANbus Controller Standard Interface
PCI360
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The PCI360 CANbus controller PCI card is based on the SJA1000. The SJA1000 provides an interface to the popular CANbus that support both standard (11-bit) and extended (29-bit) identifier messages. LEDs provide diagnostics information.The CAN network is a serial communication protocol which efficiency supports distributed real-time control with a high level of reliability.
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Product
Zero Phase Current Transformer
MZL-30
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MULTI MEASURING INSTRUMENTS Co., Ltd.
Split-core type for measuring zero phase current
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Product
Three-Phase Transformer Winding Resistance Meters
TWA Standard Series
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When it comes to winding resistance measurement on three-phase power transformers and autotransformers, TWA Standard series offers some of the most technically advanced instruments with LCD display in the market. Both models are capable of testing six transformer windings with a one-time cable connection, as well as three-phase automatic transformer demagnetization. The stored magnetic energy is safely automatically discharged at the end of the test. The built-in tap changer control unit enables automated test mode, where the instrument operates the tap changer without operator input and records winding resistance results based on pre-selected stabilization criteria. This option makes the operator’s job significantly easier.Both models can output test currents from 5 mA to 25 A DC for the purpose of winding resistance measurement. TWA40D has a special test mode for checking the synchronization of on-load tap changers with three phases simultaneously tested in parallel, in which the total test current can rise to up to 40 A DC.TWA40D has additional advantages when it comes to non-intrusive tap changer analysis. The unique DVtest method enables checking the moving contacts of on-load tap changers during the transition, measuring the transition time, detecting open circuits, and many other types of faults. It is performed with 0.1 ms sampling rate, simultaneously with the measurement of tap changer motor current which helps with the detection of motor and mechanical issues. A special proprietary algorithm is used for testing tap changers connected through a built-in series (booster) transformer. The DVtest can be performed either on one phase or on three phases simultaneously. It can also be performed as an additional test simultaneously with the winding resistance test in all tap positions.An additional unique advantage of TWA40D is the capability of simultaneously testing the winding resistance of all three phases of a three-phase transformer (connected in a YN configuration). This can significantly shorten the total testing time – for example, it enables the operator to perform 33 measurements instead of 99 on a tap changer with 33 tap positions.The test leads for TWA three-phase transformer winding ohmmeters are interchangeable with the TRT turns ratio testers, which means that both sets of tests can be performed with a single test lead connection to the power transformer terminals.
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Product
IEC Standard Burden Sets (Current)
IEC Burden Sets
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Testing and calibrating current transformers often requires standard burdens of reliable accuracy and stability, and burdens that are immune to stray fields and harmonics. These burden sets have been carefully designed to meet these requirements. They also provide the standard burdens required for the testing of current transformers for metering service, and for the testing (within the current rating provided by the sets) of current transformers for relaying applications, all as called for by IEC (International Electrotechnical Commission) Publication 185: 1987.
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Product
Differential Transformer Type Extensometers
DT Series
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ISO Class 1 Compliant Differential Transformer Type Extensometers The ISO 6892-1 standard for tensile testing of metallic materials prescribes Class 1 or higher extensometers, and JIS Z2241 prescribes Class 2 or higher extensometers when measuring withstanding pressure. The DT series includes Class 1 compliant differential transformer type extensometers, which can be used to implement test methods compliant with metal tensile test standards.
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Product
Xytronic Three-Phase Site Analyzing Standard
RADIAN RX-3X-A
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The RX-3X-A Xytronic Three-Phase Site Analyzing Standard brings precision measurements, normally associated with laboratories, to the meter site at a surprisingly affordable price. How is this possible? Radian has always designed state of the art precision measurement equipment with extreme high and low operating temperatures in mind – all site analyzers are tested at -20C to +70C. Couple precision measurement with ruggedness, throw PCSuite software automation into the mix, you have the premier RX Site Analyzing solution to meet the most demanding site measurement challenges
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Transformer Protection
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Schweitzer Engineering Laboratories, Inc.
Transformer protection products and systems provide complete primary and backup protection for all types of transformer faults. They are suited for use in utility-, industrial-, and commercial-scale power transformer systems.
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Product
High Frequency Current Transformer
HFCT Ø 140mm
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Techimp Clamp High Frequency Current Transformer model 140 is an inductive sensor for partial discharge measurements. It is suitable for online /off line PD tests on : large diameter cables ; grounding rod bar ; etc. A TNC termination is available to connect the Clamp HFCT 140 to the TechImp PD analyzer : PDCheck , PDBase etc. The arrow indicates the requested input current (Iin) direction to get coherent output voltage (Vout) polarity respect to ground. When the sensor is installed with the arrow directed to ground, the detected voltage signal (Vout) has the same phase of the input current (Iin).
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Product
Standard 1.50 (42.00) - 3.30 (94.00) General Purpose Probe
P2663G-1W1S
General Purpose Probe
Current Rating (Amps): 3Average DC Resistance lower than (mOhm): 10Test Center (mil): 75Test Center (mm): 1.91Full Travel (mil): 90Full Travel (mm): 2.29Recommended Travel (mil): 67Recommended Travel (mm): 1.70Overall Length (mil): 810Overall Length (mm): 20.57
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Product
Solution Standard Reference Materials
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NCS Testing Technology Co., Ltd.
Solution Standard Reference Materials by NCS
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Product
Standard Prod
121017/Colour
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IEC 1010 Rating: 1000 Volts Cat III Double/Reinforced Insulation 30Amps Standard Colours: Black, Red Features: Standard 4mm socket to rear.
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Transformer Ratio Meters
Handheld Turns Ratio & Winding Resistance Tester TWR-H
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TWR-H is a handheld, battery operated, fully automatic test set specially designed for turns ratio, phase shift, excitation current and winding resistance measurements of transformers. It can also perform demagnetization of these transformers. Transformer turns ratio is determined by applying AC voltage across high voltage winding, accurately measuring AC voltage across the corresponding unloaded transformer winding, and then displaying the ratio of these voltages. User can enter a transformer’s nameplate voltages, so that turns ratio deviation can be calculated. This feature eliminates any error otherwise caused by an operator’s manual calculation. TWR-H compares measured turns ratio with the nameplate ratio and prints out the % of error for each test. Transformer winding resistance is determined by injecting DC current through a winding, accurately measuring DC voltage across the winding, and then calculating resistance as the ratio of voltage and current. The device generates true DC ripple-free currents. Both the injection of the current and the discharge of energy from transformer magnetic circuit are automatically regulated.
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Product
Transformer Turns Ratio Meter
TTRM 102
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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.
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AC Current Transformers
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CR Magnetics supplies an extensive line of toroidal current transformers for any need. Our offerings include measuring from 10,000 amps to a few milliamps. This includes ANSI, Commercial, Ground Fault, High Frequency, Wound Primary, DC Immune and Nano Alloy current transformers.
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Current Transformer Field Test Set
1043
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The Catalog 1043 Current Transformer Field Test Set is a simple and inexpensive means whereby a current transformer installation may be quickly checked for many sources of trouble. The tests are made without interrupting the Customer's service and while the load is on.
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Product
Standard 1.10 (31.00) - 2.50 (71.00) General Purpose Probe
HPA-1D
General Purpose Probe
Current Rating (Amps): 3Average Probe Resistance (mOhm): 35Test Center (mil): 75Test Center (mm): 1.91Full Travel (mil): 100Full Travel (mm): 2.54Recommended Travel (mil): 67Recommended Travel (mm): 1.70Mechanical Life (no of cyles): 1,000,000Overall Length (mil): 655Overall Length (mm): 16.64
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Standard 0.49 (13.89) - 2.50 (70.87) Battery Probe
CP-4L
Battery Probe
Current Rating (Amps): 10Average Probe Resistance (mOhm): 25Test Center (mil): 75Test Center (mm): 1.91Full Travel (mil): 60Full Travel (mm): 1.52Recommended Travel (mil): 40Recommended Travel (mm): 1.01Overall Length (mil): 311Overall Length (mm): 7.90Overall Length Remark: Overall length does not include tail.
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Product
Insulating Transformer Oil Test Set
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NMC make Insulating BDV Oil Test Set are used to check the di-electric strength of the transformer oil.
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Standard 2.20 (62.00) - 4.80 (136.00) General Purpose Probe
EPA-4B
General Purpose Probe
Current Rating (Amps): 7Average Probe Resistance (mOhm): 35Test Center (mil): 187Test Center (mm): 4.75Full Travel (mil): 250Full Travel (mm): 6.35Recommended Travel (mil): 167Recommended Travel (mm): 4.24Mechanical Life (no of cyles): 2,000,000Overall Length (mil): 1,320Overall Length (mm): 33.53
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Non Standard Connectors
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C.C.P. Contact Probes Co., LTD.
With over 10,000 Designs, you could customize the product to achieve your spec!
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Incremental Transformer Solutions
TRANSPORT X
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The Kelman TRANSPORT X is a compact portable Dissolved Gas Analysis (DGA) system which can be used to analyze oil samples for all dissolved fault gases and moisture. If abnormal levels are detected, it further provides a diagnostic using various IEEE/IEC approved interpretation rules.
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Product
Standard 4.10 (116.00) - 6.50 (184.00) Switch Probe
MSP-3C
Switch Probe
Current Rating (Amps): 3Average Probe Resistance (mOhm): 50Test Center (mil): 125Test Center (mm): 3.18Full Travel (mil): 140Full Travel (mm): 3.56Recommended Travel (mil): 85Recommended Travel (mm): 2.16Mechanical Life (no of cyles): 100,000Overall Length (mil): 2,140Overall Length (mm): 54.40Switch Point (mil): 30Switch Point (mm): 0.76
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AC Calibration Standard
1U647-001
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The 1U647-001 is a low cost calibration standard used to determine if a 1U632-100 or a 1U663-100 DMU requires factory calibration. Its portability makes it ideal for field-testing. The standard generates signals that simulate the aircraft’s resolvers, rotary variable transformers (RVTs), and linear variable displacement transformers (LVDTs). The unit also generates a pulse width modulated (PWM) signal, and routes the output of an ARINC 429 source to the different DMU input channels. The calibration standard connects directly to the DMU and replaces the output signals of an active extender card. Discrete switch settings simplify testing. The unit is housed in a rugged aluminum case.
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Product
Fully Automatic Transformer Oil Acidity Testing Kit
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NMC offers Fully Automatic Transformer Oil Acidity Testing Kit
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Product
Mini Automatic Transformer Observation System
mini-ATOS
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The mini-ATOS, is a professional multifunctional power transformer and substation diagnostic system. This compact and intelligent instrument can perform many routine and advanced tests such as Winding Resistance (WR), Dynamic Resistance Measurement (DRM), Turns Ratio (TR), Frequency Response of Stray Losses (FRSL), Magnetic Balance, and other diagnostic parameters. With the built-in fully automatic multiplexer, only a one-time connection is required for nearly all functions, which saves a considerable amount of time. The portable, rugged case is perfect for use anywhere onsite or in a laboratory. It is specially designed for fast and easy measurements with the well-known high precision and quality of all Raytech instruments.
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Current Transformer Tester
CT-T1
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The CT-T1 is a microprocessor-based Current Transformer Tester that measures CT excitation current, turns ratio, and winding polarity tests, all without having to switch the leads during testing. The instrument has a fully automatic knee point detection (ASA 10/50, IEEE 30°, IEEE 45°). Although includes 5 low side taps and 1 high side tap.
