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Protective Relay
acts as a circuit breaker in the event of a fault.
- Pickering Interfaces Inc.
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PXI/PXIe Power Relay Module,5 Amp, 50-pin SGMC Connector
40-153-004-HI
The 40/42-153-004-HI is a PXI/PXIe high density power relay module with 18xSPST switches rated at 5A and includes the hardware interlock option. User connection is via a 50-pin SGMC male connector, hardware interlock is via a 4-pin 00 series socket (mating plug is supplied). The 40/42-153 range is available in 18, 25, 36 or 50 SPST configurations with or without hardware interlock.
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Relay Test Set Type SP-I
Supreme Instrument Laboratories
Supreme make relay testing set is designed for site testing of protective relays which simulate in common fault conditions under which a protective relay will be called into positive function. Periodic field testing is the best way of ensuring the integrity of the protective relays. We offer our relay testing set with specific testing capacity to suit different group of protective relays. The testing set operates on single phase 230 V, A.C. 50Hz. Supply.
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Relay Test Equipment
Vanguard Instruments Company, Inc.
The VIC Model PCI-600 is a programmable, high-current source that is designed specifically for utility-substation applications. This alternating current(ac) test device is used primarily for injection testing of protective relays. This same device can also be used for testing thermal, magnetic and solid-state motor-protection relays and molded-case circuit breakers. The PCI-600 is versatile and can also be used in many other applications that require a high-current source.
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Advanced Line Protection System
ALPS
ALPS is a multi-function digital protective relay system intended toprovide distance protection for HV or EHV transmission lines. It maybe applied on or adjacent to series compensated lines. It is availablefor single or three phase tripping applications. Typical operatingtimes are to 1 cycle.
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6-phase Protective Relay Tester
VAE-660
The VAE-660 Six-phase protective relay tester is designed to test all the major protection testing projects, including the 27 under frequency protection, 59 overcurrent protection, 67 under voltage protection, 81 over frequency protection, 87 differential protection, 51 time overcurrent protection, 50 boundary protection, 21 distance protection, 86 rate of change of frequency protection, and 32 directional power protection, and others.
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GPS Synchronization For End-to-end Testing
PGPS02
The PGPS02 accessory is a GPS synchronization which can be used for working with protective relay testing equipment to do end-to-end testing. It can be synchronized with the GPS system through a GPS receiver and outputs accurate timing pulse signals in seconds (PPS) and minutes (PPM).
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Integration
Schweitzer Engineering Laboratories, Inc.
Integrate protective relay and metering information into SCADA and plant control systems through secure networking and automation devices.
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Relay Test Bench
VAE-430
The VAE-430 protective relay tester is designed to test all the major protection testing projects, including the 27 underfrequency protection, 59 overcurrent protection, 67 undervoltage protection, 81 overfrequency protection, 87 differential protection, 51 time overcurrent protection, 50 boundary protection, 21 distance protection, 86 rate of change of frequency protection, and 32 directional power protection, and others.
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Relay Test Set
RNT-5A
This is a portable testing kit in one unit, suitable for testing protective relay, over current relay, earth fault relay, protective device, circuit breaker, tripping coils etc. The set is designed for both laboratory and field use.
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PXI High Voltage Switching Modules
These high voltage relay switching modules provides solutions for uncommitted relay, matrix and multiplexer applications that need to switch voltages up to 1000VAC. The design of these high voltage relay modules ensures they can withstand high common mode voltages and a protective safety cover is used to shield the switching components.
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Relay Test Set
Cambridge Instruments & Engineering Co.
“CIE” Relay Test Set is ideal for Testing Protective relay, over current relay, earth fault relay by secondary injection method with help of digital timer.
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Protective Relay Test Set
POM2-6143
POM2 series protective relay test equipment is the best modular designed relay tester with local control system. There are 2 models, the POM2-6143 and POM2-3243, the POM2-6143 with 6×15A and 4×300V.
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Protection Relays Testers
Calmet Smart Calibration Devices
A protective relay test includes the review of protective devices in a system. Protective devices and periodic reviews are very important above all for the safe operation of power supply networks. The protective relay test refers to the protective relay.
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Secondary Injection Relay Test Set
T 1000 PLUS
T1000 PLUS is a protective relay test set especially designed to give the commissioning engineers a multitasking and highly reliable testing equipment.
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Step Up Transformer
MagD
SCOPE proudly introduces Step-Up Transformer - MagD, specially designed to cater the needs of testing of instrument Transformers. Before new systems are put into service or after any occurrence of fault, the instrument transformers need to be tested for their outputs. It is to be ensured that these instrument transformers are giving proper outputs to the protective relays. MagD is used to plot excitation curves for instrument transformers. Inbuilt voltmeter and ammeter, eliminates the need of external meters for plotting of curves. It can also be used for de-magnetization of transformer cores and also turns-ratio tests can be conducted using MagD.
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Three-Phase Transformer Demagnetizer
DEM60C
After a DC current test, such as winding resistance measurement, the magnetic core of a power or instrument transformer may be magnetized (remnant magnetism). It can cause various problems such as wrong diagnostics, inaccurate measurements on a transformer, inrush current at the start-up of a power transformer, or incorrect operation of protective relays due to magnetized CT cores. The best way to eliminate this source of potential problems is to use demagnetizer on the power or instrument transformer.The DEM60C is a fully automatic test instrument which performs three-phase transformer demagnetization. Transformer magnetic core demagnetization requires the application of AC current with magnitude decreasing to zero. DEM60C provides this AC current by internally changing the polarity of a controlled DC current. During the demagnetization process, the instrument supplies the current at decreasing magnitude for each step, following a proprietary algorithm. It can demagnetize single-phase and three-phase power transformers.The instrument can be connected to all three phases of a power transformer to be demagnetized, on either the primary or the secondary side. If a user selects specific vector diagrams for different types of transformers, DEM60C will run a specific demagnetization procedure for each transformer type (i.e., single phase, delta, wye/star, zig-zag.) without switching the test leads.DEM60C enables safe and efficient power transformer demagnetization. The instrument automatically regulates the injection of current and discharging energy from the inductance. During and after the operation, an intrinsically safe discharge circuit with an indicator rapidly dissipates the stored magnetic energy. The discharging circuit is independent of the power supply, which improves its reliability in case of loss of power.Test currents of up to 60 A DC enable efficient demagnetization of even the largest power transformers. Using a DV Win software, it is possible to control DEM60C externally.
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20Hz Generator
Signals & Systems India Private Limited
In order to implement a 100 % stator earth fault protection based on subharmonic injection, a 20Hz voltage is injected into the generator star point. The 20-Hz generator SGEN-1001 is used in combination with the Band Pass Filter SBPF-1001 in the Stator Earth fault protection. The injection can be performed by connecting the SGEN-1001 and the SBPF-1001 to the load resistor of an earthing or neutral transformer. If an earth fault occurs in the generator star point, the 20 Hz voltage drives a current through the fault resistance. From the driving voltage and the fault current, the protective relay determines the fault resistance.
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Secondary Injection Relay Test Set
TD 1000 PLUS
TD1000+ is a protective relay test set especially designed to give the commissioning engineers a multitasking and highly reliable testing equipment. In comparison with T 1000 PLUS model, TD 1000 PLUS has two current outputs to test the differential relay characteristic curve, besides the pick-up current.
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Sensing Resistors
Resistive Voltage Dividers
NGR Sensing Resistors are attached in parallel to the neutral grounding resistor. The sensing resistor allows a protective relay to detect a resistor failure in a continuous manner. Sensing Resistors are used in combination with neutral grounding resistor monitor relays. The relay measures neutral grounding resistance, neutral grounding resistor current and neutral to ground voltage. The relay continuously measures neutral grounding resistor ohmic value in an unfaulted system and it trips on if neutral grounding resistance varies from its calibrated value.
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Monitoring Relays
A Monitoring Relay is a protective control device. The basic functions are to receive input signals, monitor and determine them, and output an alarm signal if a set value (threshold) is reached. Monitoring Relays monitor power supplies (voltage, current, power, phase), temperatures, and other analog signals and detects abnormalities in machines and equipment by determining values against alarm thresholds.
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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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Relay Test Set
Relay testing equipment is a portable apparatus designed for checking the operating characteristics of protective relays on site. Rr Relay Testing Equipments are designed to facilitate routine test or periodic maintenance test of relays by simulating (as early as possible) fault conditions under which the protective relays are required to function. There are several approaches to the method of testing relays on site. The Relay Testing Equipments are secondary injection type and are intended to be used to test the relays after isolating them from live systems, either physically or electrically.
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Universal Power Line Carrier
UPLC-ll
As with our previous UPLC power-line carrier design, UPLC-II requires no hardware modifications for most required configurations. UPLC-II is frequency programmable across the entire power-line carrier spectrum (30 to 500 kHz) without changing any hardware components. UPLC-II can be software configured either as an ON/OFF or frequency-shift keyed (FSK) power-line carrier unit without changing any hardware components. This flexibility makes each UPLC-II universally suited for any directional comparison blocking, permissive, phase comparison or transfer trip protective relay application.
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Automatic Relay Tester
The protective devices such as relays, overload coils, circuit breakers must be checked regularly to ensure that, they are always ready to operate correctly. If a fault occurs in the equipment, which they are protecting, routine relay testing will quickly detect the faulty, incorrectly adjusted protection circuits correctly. It is usually necessary to measure its operating time. The micro controller based time interval meter is used for this purpose in all AJIT brand relay testers.
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Protection Testing Software
F6TesT Software
Doble's F6TesT software is a visually-robust software for simple, fast, and automated protective relay testing, including the testing of complete protection schemes.F6TesT has an intuitive user interface and features graphical protection-test modules. These modules simplify testing impedance, differential, current, voltage, directional, frequency, volts-per-hertz, rate-of-change of frequency, sync-check, reclosing and all other functions.
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Portable Relay Tester
The protective devices such as relays, overload coils, circuit breakers must be checked regularly to ensure that, they are always ready to operate correctly. If a fault occurs in the equipment, which they are protecting, routine relay testing will quickly detect the faulty, incorrectly adjusted protection circuit and will possibly prevent serious damage to plant or injury to personnel. Apart from checking the protective circuits correctly, it is usually necessary to measure its operating time. The micro controller based time interval meter is used for this purpose in all AJIT brand relay tester.
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Transformer Demagnetization Tester
Weshine Electric Manufacturing Co., Ltd
After a DC current test, such as winding resistance measurement, the magnetic core of a power or instrument transformer may be magnetized (remnant magnetism). It can cause various problems such as wrong diagnostics, inaccurate measurements on a transformer, inrush current at the start-up of a power transformer, or incorrect operation of protective relays due to magnetized CT cores.
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Primary Current Injection Sets
Protective devices such as relays, overload Coils, Circuit breakers and CTS etc. must be checked regularly to ensure that they are always ready to operate correctly, Routine current injection testing will quickly detect faulty or incorrectly adjusted protection circuits / devices & will be possible to prevent serious damage to the system. Primary injection kit is designed to operate on single phase 230/240 volts AC 50 HZ to develop smooth & continuous test current as for loading, calibrating, and testing of CTS, Bimetal Relays, Protection Relays etc. The test set gives high current output at low cost and with inherent safety. The primary current injection testing checks all parts of the protection system by injecting current down the cable / bus bars. The application of the primary current injection sets is to ascertain the current carrying capacity of any Conductor, insulator, connector or calibration of CTS / Bi-metallic relays etc.
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Protective Relay Testing Equipment
PW466i
PW466i (6×20A, 6×150V) 6-phase relay tester is a powerful secondary injection protective relay testing kit with 6-currents and 6-voltages sources.
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Circuit Breaker Analysis Systems
When a fault such as a short circuit or current overload is detected by a protective relay, a trip impulse is sent to the circuit breaker. The circuit breaker must function as specified and interrupt the current as soon as possible or severe damage may occur. The damage caused by a malfunctioning circuit breaker can often be catastrophic, resulting in significant damage to the electrical system.
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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.
