Showing results: 586 - 600 of 650 items found.
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ALPS -
GE Digital Energy
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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Mors Smitt Group
Our high-quality general purpose relays are applied mainly in industrial and power automation systems, in signaling and protection systems, and in other control and electric drive systems. They are also suitable for more common controlling applications like building automation or HVAC systems.
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Manta Test Systems
Choose from Doble’s F6300e and F6350e External Amplifiers for your specific protection testing needs and requirements. These amplifiers are useful in high power protection testing applications when you need additional current and/or voltage sources, for critical high burden relay testing, as well as system modeling.
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TransData, Inc.
TransData Isolation Relays provide surge protection for energy metering installations by electrically isolating the pulse input/output wiring path to protect electricity meters, network components, energy management systems and recording devices from damage caused by transmitted or induced electrical surges.
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AJIT Electronics Co.
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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Weshine Electric Manufacturing Co., Ltd
1. The instrument has standard four phase voltage and three-phase current output. It can test not only various traditional relays and protection devices, but also various modern microcomputer protections, especially for transformer differential protection and standby automatic switching device. The test is more convenient and perfect.2. Classic Windows XP operation interface, friendly man-machine interface, easy and fast operation; high performance embedded industrial control computer and 8.4 inch resolution 800 × 600 TFT true color display screen, can provide rich and intuitive information, including the current working state of the equipment and various help information.
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HID -
GE Digital Energy
Use the HID module in conjunction with a high-speed overcurrent relay to provide three phase high impedance differential protection for substation busbars of any voltage level. Additionally, it can also be used to protect electrical machines like transformers, generators or motors against restricted ground faults.
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Mitsubishi Electric Automation, Inc
A type of starter for AC motors that combines a magnetic contactor and an overload relay. The MS-T (10-32 amps) and MS-N (35-400 amps) series motor starters offer a compact design and provide reliable protection for your motors against overload and short-circuit conditions in any industrial application.
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Weshine Electric Manufacturing Co., Ltd
It is a new miniaturized microcomputer relay protection tester realized by extensively listening to users' opinions, summarizing the advantages and disadvantages of similar domestic products, and fully using modern advanced microelectronic technology and devices. It adopts the advanced structure of stand-alone operation, and can also be connected to a notebook computer.
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IEC 61850 -
GE Digital Energy
The HardFiber System is a KEMA tested IEC 61850 Process Bus Solution that allows the mapping of measurements made in the switchyard to protection relays located in the control house using secure communications. The HardFiber System addresses the key technical and logistic challenges affecting the labor required for substation design, construction and maintenance.
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TCG 01-G -
Tekron International Ltd
The TCG 01-G is a highly accurate, full featured GPS and GLONASS (GNSS) clock. With enhanced cyber security features that support NERC CIP requirements, the TCG 01-G is designed for use in modern day smart grid / smart substations, electricity distribution, transmission, generation protection and control systems. The clock synchronizes multiple IEDs (Intelligent Electronic Devices) within a network, including protection relays and remote telemetry units to enable accurate time stamping. The TCG 01-G supports IEEE 1588 v2 (PTP) and IEC 61850.
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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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V450 -
Highland Technology, Inc.
The V450 is a 16-channel 24-bit VME isolated analog-to-digital converter module which can acquire a wide range of DC voltages, including thermocouple readings with automatic cold junction compensation. Each channel is independently isolated with it's own A/D converter, signal conditioning, input protection circuits, and test relay.
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CMC 353 -
OMICRON electronics
With its compact design and low weight of 13.3 kg / 29.3 lbs, the CMC 353 provides the perfect combination of portability and power. It is the ideal test set for three-phase protection testing and the commissioning of SCADA systems. The powerful current outputs (3 x 32 A / 430 VA) optimally support 5 A relay testing.
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C300B -
Calmet Smart Calibration Devices
Three phase, class 0.02 and 0.05 power quality calibrator up to 120A (360A) and 560VAC with programmable power quality parameters. It makes possible to make automatic test of electricity meters, measurement transducers, current transformers and protection relays.