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Protective Relay
acts as a circuit breaker in the event of a fault.
- Pickering Interfaces Inc.
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PCI Relay Driver Card, 64-Channel
50-411A-001
The card provides 64 channels of low side switching for external relays. Users need to simply connect a positive voltage source to one terminal of a relay coil and the other terminal to an output of the 50-411A. Each output is capable of sinking up to 1A of continuous current.
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Secondary Injection Equipment for Relay Testing
Portable equipment to test all types of protective relays and power system protection schemes. Automatic relay testing software, Comtrade transient playback and test reporting.
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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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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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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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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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Primary Current Injection
PCI-600
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.
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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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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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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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Universal Three-phase Protective Relay Test Set
Mentor-12
The Mentor 12 is the most advanced three-phase relay test set available for type and field testing of electromechanical and digital protections of any kind, in traditional or IEC-61850 based substations.
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Software For Protective Relay Testing
TDMS Pro
TDMS Pro is the NEW software platform designed to efficiently run tests and manage test data of almost any kind of electromechanical and digital relay from any manufacturer.From the simplest to the most complex type, TDMS Pro, with a completely new graphic interface and advanced test functions, can be used to test all types of multifunction protection relays installed in power transmission and distribution networks, in power plants and industries. The universal test set compatible with TDMS Pro are: DRTS 66, DRTS 64, DRTS 34 and DRTS 33.
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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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Three Phase Protective Relay Test Equipment
TEST-330
Beijing GFUVE Electronics Co.,Ltd.
Test-330 three phase protective relay test equipment is a three phase current output and five phase voltage output relay tester with embedded host machine equipped with Complex Programmable Logic Device.
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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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Protective Relay Test Kit
PW460
PW460 Protective Relay Test Kit is the comprehensive protection relay testing equipment for all types of protective relays with high accuracy. This relay test kit has in-built output monitoring and recording function and supports testing IEC 61850 digital relay.
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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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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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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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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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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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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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Contact Time Extender
CTX
The CTX relays supply a 1.5 to 2.5 seconds of a contact output time extension for a momentary contact input. The CTX allows slower device such as scada systems and annunciators to operate thus preventing data loss on the action of protective relays/devices or trip indicators such as the E-Max Trip indication Relay (TIR).
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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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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 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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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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Power System Simulator
F6150e
This power system simulator performs the simplest through the most complex tests. Meeting all your protective relay testing needs, the F6150e is available in different configurations.
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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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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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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.
