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Primary Injection Test Systems
Primary current injection testing is utilised in high current/high voltage scenarios found at large electrical installations such as substations. A large current (between 100A and 20,000A depending on system specifications and test requirements) is injected directly on the primary side of the electrical system such as a circuit breaker. The objective of the test is to identify how the system operates under various levels of current load.
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Secondary Current Injection Test Sets
Our range of units covers applications up to 200A and includes single phase and three phase units with applications for testing and timing of IDMT relays, thermal overloads, MCB’s and auto-reclosers.
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Primary Current Injection Test Set
DDG / 580
Wuhan Huatian Electric Power Automation Co., Ltd.
It is suitable for large current places in power system and laboratory.
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Transformer Ratio Meters
Handheld Turns Ratio & Winding Resistance Tester TWR-H
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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Primary Test Equipment
LET-400
It allows to perform with sufficient power, all the primary current injections to test the proper function and wiring of all the elements that compose the protection and measuring section in a substation.
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Pro-Level Manual Digital Multimeter
HH2205G
High Accuracy (Basic Accuracy 0.50%). 3-3/4 Jumbo LCD display 4000 count with symbolic signs. Double Injection Casing. Backlight for work in a dim area. High Voltage test up to 1000V DC and 750V AC. Higher Current test up to 10A AC/DC. Diode and Continuity check
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Protection System Tools
Megger’s comprehensive range of products for relay tests includes high current primary injection, relay phase angle, end to end line protection GPS timers and relay current amplifiers.
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Primary Current Injection Testers
Primary Current Injection Tester is designed for testing protective relay and circuit breakers and also testing the turns ratio of current transformers at high variable currents. A test current is injected into the primary side of a system to determine how the system behaves at particular levels of current. This test makes it possible to determine whether the relay will trip and how long the current needs to flow before the trip is initiated.
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Primary Current Injection Testers
Primary current injection tests are carried out during commissioning and certification of various types of switchgear and current transformers (CT), as well as during diagnostics of grounding circuits, testing circuit breakers and other devices. Primary current injection testers can also be used for determining the terminals polarity and transformation ratio of current transformers, thermal testing of electrical devices, testing automatic reclosers and sectional disconnectors.
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Contact Resistance Meter
PCRM200S
The Motwane Manufacturing Company
The Motwane make Contact Resistance Meter (Model:PCRM200S) is a digital micro-ohmmeter, specially designed to measure extremely low resistance in micro ohm. The Instrument is based on Kelvin 4-wire connection method for measurement of low resistance.The Current injection is fixed at 100A & 200A. Test information like current injected with measured resistance & voltage drop is displayed with real time data on large LCD with backlit.This User friendly Instrument and it's accessories are housed in easy transportation case. Advanced Windows based software isprovided for data downloading, analysis and report generation. Internal memory of 199 records is provided for onsite data storage withDate & Time stamping & Recalling facility. Thermal printer is the additional feature provided to print the test results.
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Manual Ranging Digital Multimeter
HH2205C
High Accuracy (Basic Accuracy 0.5%). 3-1/2 Jumbo LCD display 2000 count with symbolic signs and back light. Double Injection Casing. Manual Ranging High Voltage test up to 1000V DC and 700V AC. Higher Current test up to 20A AC/DC. Diode and Continuity check. Measure Resistance up to 20M ohm
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Three Phase Secondary Current Injection Test Set
TEST-330B
Beijing GFUVE Electronics Co.,Ltd.
Three phase secondary current injection test set is testing relay set, protective device, instruments, output ac dc current and voltage source, embedded Window XP system.
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Fault Insertion Unit Card
SET-2110
Each line of the 32 single-ended or 16 differential channels can be connected individually and flexibly to the high current fault injection bus. For this, one of the both fault bus signal pairs can be selected dynamically for every channel. The SET-2110 Fault Insertion Card also provides the ability to generate short circuits between a channels positive and negative signal.
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PRo-Level TRMS Digital Multimeter w/Bargraph
HH2205B
High Accuracy (Basic Accuracy 0.5%). 3-3/4 Jumbo LCD display 3260 count with symbolic signs and bargraph. Double Injection Casing. Auto Ranging High Voltage test up to 1000V DC and 750V TRMS AC. Higher Current test up to 20A AC/DC
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Primary Test Equipment
LET-400-RDC
The LET-400-RDC is designed to perform most of the primary tests that are necessary in substations commissioning. It allows to perform with sufficient power, all the primary current injections to test the proper function and wiring of all the elements that compose the protection and measuring section in a substation.
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High DC Primary Current Injection Test Set
PDC15k
PDC15k High DC Primary Current Injection Test Set adopts high-frequency invert principle to realize the high DC current output capability, with very small size and light weight. PDC15k is modular designed with changeable modules and multi-functions local control software.
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Large Current 1000A Primary Current Injection Test Set
TEST-901
Beijing GFUVE Electronics Co.,Ltd.
TEST-901 primary current injection test set adopts ARM Chip to control its output process and large capacity of toroidal transformers. It is equipped with LCD display and current meter; it can show primary current value, second current value, turn ratio and the action time. Packing is used as aluminum alloy body with PC panel. TEST-901 is mainly applied to CT turn ratio testing in the power system and contact resistance test which need large current.
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Manual Ranging Digital Multimeter
HH3502
Double Injection Casing. High Accuracy (basic accuracy 0.5%). 3-1/2 digit Jumbo LCD display 2000 count with symbolic signs and back light. Manual Ranging High Voltage test up to 1000V DC and 750V AC. Higher Current test up to 20A AC/DC. Transistor test. Diode and Continuity check. Measure Resistance up to 20MΩ
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6000 Count Digital Multimeter
HH0308C
Double Injection Casing. High Accuracy (basic accuracy 0.3%). 6000 count Jumbo LCD display with symbolic signs. Auto Ranging High Voltage test up to 1000V DC and 750V AC. Higher Current test up to 20A AC/DC. Diode and Continuity Check. Measure Resistance up to 60MΩ. Measure Temperature up to 300c. Measure Frequency up to 600k Hz
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Secondary Injection Test Set
PTE-100-C Pro
The values which are presented in the LCD display are highly accurate, easy to read, and independent of the injection made by the PTE-100-C base unit.The display shows continuously the phase difference between the voltage and the current injected, and can be adjusted during the test with an accuracy of 0.1º. This facilitates the test for directional relays or reclosers and synchronizing relays, etc.
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Transformer Winding Resistance Meters
TWA Advanced Series
The TWA advanced series instruments are designed for six-winding resistance measurement and simultaneous three phase on-load tap changer analysis of both the primary and the secondary transformer windings. This is performed with a one singlestep cable setup, with test currents of up to 40A. Each transformer configuration has a special measurement algorithm which is optimized for the fast stabilization of test results. The TWA instruments generate a true DC ripple-free current. Both the injection of the current and the discharge of energy from the magnetic circuit are automatically regulated.
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Primary Current Injection Test Set
T 3000
T 3000 is a primary current injection testing system designed to perform primary tests requested in substations commissioning. It allows to perform different tests and measurements on current transformers, voltage transformers, power transformers, protection relays, energy meters and transducers
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Electrochemical Detector
800D
The Model 800C series is designed for electrochemical detection. This instrument can be used for monitoring the current passing through a flow cell in liquid chromatography/electrochemistry and in-flow injection analysis, as well as other electroanalytical applications.
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FTL Test Block
FTL testblock with dust cover and current disconnect pinThe FTL is a test block for interfacing substation devices (protection relays, fault recorders, revenue meters, ... ) to the voltage and current transformers and to other equipment on the system side of a power grid. The FTL test block uses disconnect pins to isolate the substation devices from the system side equipment. Once isolated, secondary injection can be performed using banana jacks on the front side of the test block.
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EMC Testing Services
Our sophisticated technology can meet the diversified needs of customers. Component Tests: Immunity, Radiated Immunity, ALSE, TEM cell, Bulk Current Injection, Stripline, Conducted Immunity, Transient Immunity, Power Supply Variations, Electrostatic Discharge Emissions, Radiated Emissions, Conducted Emissions, Transient Emissions. Vehicle Tests - Radiated Immunity, Radiated Emissions.
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Primary Injection Kit
Prima Series
Prima Series is designed for Primary Current Injection Testing of Current Transformers, Protection Relays & Circuit Breakers during their Factory Test, Commissioning and Routine Testing.
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Current Probes
Com-Power's Current Injection Probes are used for RF conducted immunity testing per IEC 61000-4-6, CISPR 16-1-2, RTCA DO-160 and MIL-STD 461. Current injection Probes are to be used only when there is no commercially available CDN for the type of port(s) to be tested.
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Primary Current Injection Test Set
HDSL-500A
HD Power Test Equipment Co.ltd
HDSL-500A primary current injection test set is an essential equipment for testing high-current device in electric test, which is used in power plants, distribution stations, electrical manufacturing and research institutes. It is small size, light weight, good performance, easy use and maintenance.
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Primary Current Injection Tester
SLQ
Chongqing Gold Mechanical & Electrical Equipment Co.,Ltd
It's a high voltage generator insutrment for tesitng.
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Contact Resistance Meter
CRM 100C
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.
