Contact Resistance
opposition to the flow of heat or electricity within a connection.
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Product
Contact Resistance Tester
JYL
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As a high current passes through a pair of mechanically independent metallic contacts, the contact resistance must be as low as possible. Increasing the contact resistance of the contact often causes a large voltage drop on the contact, which reduces the input power of the load equipment. If the contact resistance of one or two contacts becomes large, the three-phase voltage of the load equipment will be unbalanced, causing phase loss operation.
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Product
Contact Resistance Measurement System
CRMS
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The CRMS is a system designed to allow any user to measure the resistance of each set of relay contacts associated with the relay under test. The test system consists of a CONTACT RESISTANCE MEASUREMENT UNIT (CRMU), a MULTIPLE RELAY TEST RACK, as well as an interconnect CABLE ASSEMBLY. Either DC or AC energy to pick and drop relay coils under test for all contact measurements is supplied from the CRMU and easily interfaces with the Multiple Relay Test Rack. For additional and more thorough testing of relays an external relay tester can be interfaced to the Multiple Relay Test Rack to supply energy to the relay coil. It is recommended that the UTE Relay Tester With Timer/Counter (UTE Product # 15967-00) be utilized so the operator can take full advantage of the unique features it offers
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Product
Contact Resistance Meter
CRM 100C
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CRM 100C directly measures resistance values with DC current injection under live switchyard conditions.The CRM 100C is specially designed to reliably measure contact resistance of Circuit Breakers, Isolators, Bus Bar joints, welded joints etc., under the hostile electrostatic noise found in live EHV switchyards. It can also be used for testing cables, graphite bars etc.
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Product
Contact Resistance Meter
CRM 200B+
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CRM directly measures micro-ohm values at 200A DC under live EHV switchyard conditions quickly & accurately. It is specially designed to reliably measure micro-ohm contact resistances of Circuit Breakers, Isolators, Busbar joints, earth switch joints, welded joints etc., under the hostile electrostatic noise found in live EHV switchyards up-to 765 kV. SCOPE’s ability to make electronics work in such environment enables CRM to measure mili-volts signal in the presence of kilo-volts noise.
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Product
Contact Resistance Tester
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Weshine Electric Manufacturing Co., Ltd
The loop resistance tester is used to test the conductive loop resistance of various switchgear, and the test current shall not be less than 100A. Due to the oxidation of the contact surface, poor contact tightening and other reasons, the contact resistance increases. When a large current flows, the temperature of the contact point increases, which further accelerates the oxidation of the contact surface and further increases the contact resistance.
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Product
Earth Contact Resistance Tester
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SCR ELEKTRONIKS have developed an equipment namely Earth Contact Resistance Tester to test the appliance. To ensure the safety of operator it is essential that the Earth path (connection) should offer minimum impedance to by pass short circuit Current to Earth. This is ensured by measuring Resistance of the Earth path by passing heavy Current say 25 A. The Earth Contact Resistance Tester essentially comprises of a Variable Current source with digital Ammeter to measure the Current supplied. The Voltage drop across the Earth path is measured with a digital Voltmeter. Optionally for a particular Current (25 A) the meter can be calibrated in terms of Resistance. A timer is provided to switch off the Current after the Set Time.
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Product
Contact Resistance Meter
CRM 100B+
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SCOPE introduces its next generation of hugely popular CRM series contact resistance meter, CRM100B+ in all new super light avatar, based on cutting edge ultra capacitor technology. CRM incorporates some state of the art hardware & smart software features making it a must have tool for testing & maintenance engineers.
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Product
Contact Resistance Meter
CRM 200B
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CRM 200B directly measures micro-ohm values at 100 Amps DC under live switchyard conditions.CRM 200B is specially designed to reliably measure contact resistance of circuit breakers, isolators, busbar joints, welded joints etc., under the hostile electrostatic noise found in live EHV switchyards upto 765 kV.
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Product
Contact Resistance Test Sets
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When a high current passes through a pair of mechanically independent metallic contacts, the resistance must be as low as possible. An increase in resistance can lead to additional degradation, as I2R losses will cause local heating of the contact surfaces. Our range of micro-ohmmeters measure both steady state and dynamic low resistance values. With test currents up to 600A available, logging and trending are also available on some models. We ensure that our Contact Resistance tests sets are portable, making them suitable for field measurements. Our contact resistance testers’ portability makes them ideal for a vast range of resistance testing across the entire LV, MV HV and EHV spectrum.
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Product
PXI Single 32x8 Matrix, 1 Pole Switching
40-531-021
Matrix Switch Module
Model 40-531 very high density matrix modules are configured as a 32x8, while the 40-532 modules are configured as a Dual 16x8. Both modules are available in a choice of reed relay formats: 1-pole, 2-pole and 1-Pole screened. The screened version is suitable for switching coaxial signals up to 50MHz. Typical applications include signal routing in Functional ATE and data acquisition systems. These PXI matrix modules are constructed using high reliability Sputtered Ruthenium Reed Relays, offering 109 operations to give maximum switching confidence with long life and stable contact resistance.
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Product
Micro-Ohmmeters
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Contact resistance measurement is one of the most important and common tests during switchgear manufacturing, commissioning and maintenance stages. Besides switchgear testing, the RMO digital micro-ohmmeters are designed for simple, safe and efficient testing of:disconnecting switches,high-current bus bar joints,cable splices,welding joints,and different high-current links in factory and high-induction field environments.All DV Power RMO micro-ohmmeters use Kelvin’s 4-point measurement principle which is the most convenient for very small resistance measurements. The measurements are accurate and in accordance with international standards for AC high-voltage circuit breakers testing (IEEE C37.09 and IEC 62271-100).Starting from 2003, DV Power has been a trend-setter on the market when our first 500 A micro-ohmmeter weighing only 8 kg (RMO500A / CPM500) was released.Currently, DV Power products portfolio includes 16 models, divided into 3 series:13 portable models: RMO-A (6) and RMO-G (7) series.6 handheld models: RMO-H (6) seriesThe instruments generate a user-selectable and ripple-free test current up to 800 A in an automatically regulated test ramp. Test current ramping significantly decreases the influence of the magnetic transients to measurement.
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Product
Milliohm Meters & Microhm Meters
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Shanghai Beha Electronics Co., Ltd.
Makes measurements by passing a constant current through the device under test (generally a conductor, contact or low resistance) and measuring the voltage across it. It has visual LED checks for excessive; potential lead resistance (RP) and current lead resistance (RC). Should the instrument become too warm, the temperature sensor will shut down the current (ISCOFF).
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Product
Dual 16x4 1-Pole High-Density PXI Matrix Module
40-520-404
Matrix Switch Module
The 40-520 family of high-density PXI matrices is available in 22 different configurations with up to 256 crosspoints. The choice of six bus widths (x16, x12, x8, x6, x4 and x2) enables competitively priced solutions using Pickering Electronics instrumentation quality reed relays. These relays offer very long life with good low-level switching performance and excellent contact resistance stability. Typical applications include signal routing in ATE and data acquisition systems.
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Product
PXI Dual 32x4 Matrix 1-Pole Switching
40-534A-021
Matrix Switch Module
Typical applications include signal routing in Functional ATE and data acquisition systems. These PXI matrix modules are constructed using high reliability sputtered Ruthenium reed relays, offering >109 operations to give maximum switching confidence with long life and stable contact resistance. Larger matrices may be constructed by daisy chaining the common signals from multiple PXI modules.
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Product
Micro Power Contacts
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Rated to 10,000 cycles.Rated to 21 Amps cont w/ 12 AWG wire.Max contact resistance of 1.5 mOhms.Mating force of 2 lbs.
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Product
Milliohm Meter
16502
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Chroma Systems Solutions, Inc.
Basic accuracy : 0.05%Pulsed test current output mode is used to reduce thermal EMFs affection on milliohm measurementDC test current output mode is used to fasten measurement speed for inductive DUTDry-circuit test current output mode (limited Max. 20mV) is used to measure such contact resistances where the maximum open-circuit voltage must be limited to 50mVTemperature correction (TC function) regardless of material or temperatureUseful temperature conversion function for motor/ coil evaluation4 channels R scan with balance check function for fan motor (combined with A165017 option)0.001mΩ~1.9999MΩ wide measurement range with 4½ digits resolutionStandard RS-232 interfaceOptional GPIB & Handler interfaceBin-sorting functionComparator and pass/fail alarming beeper functionLarge LCD display (240 x 64 dot-matrix)Friendly user interface
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Product
Single 16x8 1-Pole High-Density PXI Matrix Module
40-520-203
Matrix Switch Module
The 40-520 family of high-density PXI matrices is available in 22 different configurations with up to 256 crosspoints. The choice of six bus widths (x16, x12, x8, x6, x4 and x2) enables competitively priced solutions using Pickering Electronics instrumentation quality reed relays. These relays offer very long life with good low-level switching performance and excellent contact resistance stability. Typical applications include signal routing in ATE and data acquisition systems.
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Product
Single 32x8 1-Pole High-Density PXI Matrix Module
40-520-201
Matrix Switch Module
The 40-520 family of high-density PXI matrices is available in 22 different configurations with up to 256 crosspoints. The choice of six bus widths (x16, x12, x8, x6, x4 and x2) enables competitively priced solutions using Pickering Electronics instrumentation quality reed relays. These relays offer very long life with good low-level switching performance and excellent contact resistance stability. Typical applications include signal routing in ATE and data acquisition systems.
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Product
PXI Single 92x4 Matrix, 1-Pole Switching
40-535-021
Matrix Switch Module
Typical applications include signal routing in Functional ATE and data acquisition systems. These PXI matrix modules are constructed using high reliability sputtered Ruthenium reed relays, offering >109operations to give maximum switching confidence with long life and stable contact resistance.
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Product
PXI Ultra High Density 64x4 2-Pole Matrix
40-533B-022
Matrix Switch Module
The 40-533B ultra high density matrix module is configured as 64x4 or 64x2 and is available in a choice of 1-pole and 2-pole reed relay formats. Typical applications include signal routing in Functional ATE and data acquisition systems. These PXI matrix modules are constructed using high reliability sputtered Ruthenium reed relays, offering >109operations to give maximum switching confidence with long life and stable contact resistance. Larger matrices may be constructed by daisy chaining the common signals from multiple PXI modules.
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Product
Contact Resistance Measurement Kit
LRM-10
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The LRM-10 is a 10A micro-ohmmeter kit designed to measure low resistance for electrical interconnections integrity testing. The LRM-10 has a range from 0.01µΩ to 200Ω. It comes with heavy duty four points probes and it is compatible with a great variety of optional accessories.
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Product
PXI Dual 44x4 Matrix, 1-Pole Switching
40-536-021
Matrix Switch Module
Typical applications include signal routing in Functional ATE and data acquisition systems. These PXI matrix modules are constructed using high reliability sputtered Ruthenium reed relays, offering >109operations to give maximum switching confidence with long life and stable contact resistance.
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Product
PXI Single 44x8 Matrix, 1-Pole
40-537-021
Matrix Switch Module
Typical applications include signal routing in Functional ATE and data acquisition systems. These PXI matrix modules are constructed using high reliability sputtered Ruthenium reed relays, offering >109operations to give maximum switching confidence with long life and stable contact resistance.
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Product
Semiconductor
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You can find Spring probes used for test process for production of semiconductor here. Spring probe is probe with spring inside and is also called Double-ended probe and Contact probe. It is assembled in IC socket and becomes electronic path, which vertically connects Semiconductor and PCB. By our excellent machining technique, we can provide spring probe with low contact resistance and long life. “MARATHON” series is our standard lineup of spring probe for testing semiconductor.
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Product
LXI Low Thermal EMF Matrix 1-pole 42x33
60-510-002
Matrix Switch Module
The 60-510 is a high density 1-pole matrix module controlled via LXI. It has excellent thermal stability and substantially reduced thermal EMF figures when compared to a conventional switching matrix. Typical applications include signal routing in ATE, selecting thermocouple inputs, switching amplifier gain circuits and high accuracy DC micro-volt measurements. Ruthenium reed switches are used because of their good low level switching capability. They also have a very long life with excellent contact resistance stability, minimal wetting current and low thermal offset.
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Product
COMPUTERIZED AUTOMATIC RELAY TEST SYSTEM
CVRT-S16
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CVRT-S8 & S16 are ideal for automatic testing of ELECTRO MECHANICAL AND READ RELAYS (only DC relays) both for static and dynamic characteristics. This system scans at one stroke, all the parameters of the relay as per definition of test procedure. The test sequence can be pre-programmed and stored in the disk. You can select the tests as per your requirement. Can include or exclude the test and you can have several options to match your test definitions. Semi skilled person can be engaged for actual testing, as he need not make any settings and need not interpret the readings. The system conducts the tests and gives PASS / FAIL indication on overall test results. If a printer is connected, each test result will be printed.Test Parameters : -> Coil Resistance.-> PickUp/Pull In /Operating Voltage or Current Linear Ramp Method or Step Method.-> Measure Pickup Contact Gap FBB-LBB V or mA-> DropAway/Drop Out/Release Voltage or Current Linear Ramp Method or Step Method.-> DropAway Contact Gap FFB-LFB V or mA-> % Release Dropaway/Pickup-> Contact Resistance of all contacts both Front and Back contacts.-> Operating Time @ Set Voltage or Current.-> Contact Bounce or Chattering Time while Operating @ above-> Release Time @ Set Voltage or Current.-> Contact Bounce or Chattering Time while release @ above-> Difference of Operate Time - Release Time.-> Bridging Test or Non Overlap Test.-> Transfer or Traverse Times while Operate and release.-> Operate Time @2nd Set Voltage or Current.-> Release Time @2nd Set Voltage or Current.-> Power Consumption @ Rated Voltage.-> Coil Current @ Rated Voltage at Room Temperature.-> Coil Resistance Corrected to 20deg C.-> Timing Waveform Graph for all active Contacts.
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Product
Shoe Heat Resistance Tester
UI-FT28
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Shoe Heat Resistance Tester is to test shoe outsole and upper hot contact resistance ability especially for safety shoe. Heat Resistance Test Method includes ISO 20344, SATRA TM49, EN 344 and etc.
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Product
Micro-Ohmmeters
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Micro-Ohmmeter is an affordable 7 range, 4-Wire Kelvin based product that is used to test electrical resistance on a wide variety of applications including winding resistance, contact resistance, and component testing. The 720A micro-ohmmeter has an autorange feature (available with NSN package) and is compatible with an RS232C interface (OP-232). Thanks to its wide-range capabilities, ease of use, and CE mark, this micro-ohmmeter is used commonly across the globe.
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Product
Micro-Ohmmeters
RMO-G Series
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The RMO-G is a portable micro-ohmmeter designed for contact resistance measurement of non-inductive test objects and applications with increased safety requirement. It tests medium and high-voltage circuit breakers, disconnecting switches, high-current bus bar joints, cable splices, and different high-current links. Due to its Both Sides Grounded and Remote Control functionalities, the instrument accurately measures even in the most demanding environments, providing additional safety to testing personnel.The RMO800G is the most powerful portable micro-ohmmeter on the market with 800 A output current. RMO200G is our best seller in the USA. A user can choose the appropriate model depending on the output current requirement, from 100 A (RMO100G) to 800 A (RMO800G).We use an unbreakable plastic case with IP67 protective rating (with closed lid) for instruments’ housing. Although very portable and lightweight, RMO-G micro-ohmmeters have very high output power capabilities. High output voltage enables a wider measurement range at higher test currents. Consequently, it enables the usage of thinner/longer test cables. RMO-G generates a true DC ripple-free (less than 1 % ripple) current with automatically regulated test ramps. During the testing, it increases current before measuring and decreases current after the measurement. This significantly decreases magnetic transients and ensures great accuracy.Special current clamps measure a current through groundings when the instrument tests in Both Sides Grounded conditions. The instrument itself powers these clamps. If even higher safety level is required, the Remote Control feature enables the operator to perform measurements from distant locations.RMO-G instruments can store up to 500 measurements in internal memory. Also, they have a built-in thermal printer and USB flash drive available as an option. An additional option is the built-in High Precision module suitable for measurement of very low resistance, in the range from 1 to 30 µΩ, with 0,01 µΩ resolution.Our free DV Win software communicates with the RMO-G micro-ohmmeters via USB or RS232 interface. It allows a user to run the test remotely from a PC. Also, a user can download test results, analyze and generate fully configurable test reports through the software.
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Product
Single 32x4 1-Pole High-Density PXI Matrix Module
40-520-401
Matrix Switch Module
The 40-520 family of high-density PXI matrices is available in 22 different configurations with up to 256 crosspoints. The choice of six bus widths (x16, x12, x8, x6, x4 and x2) enables competitively priced solutions using Pickering Electronics instrumentation quality reed relays. These relays offer very long life with good low-level switching performance and excellent contact resistance stability. Typical applications include signal routing in ATE and data acquisition systems.
