7SD52-53 - Siemens
... The relay shall have four-line backlit front display for metering, relay settings and fault information. ...
... The relay shall have four-line backlit front display for metering, relay settings and fault information. ...
Protection components - Elektronický katalog Schneider Electric
... b disconnect the line linking the thermistors to the LT3 S protection unit, at the terminals of the machine being protected: motor, etc., b using an ohmmeter with a voltage rating less than or equal to 2.5 V, measure the resistance of the probe circuit at the machine terminals, b depending on the nu ...
... b disconnect the line linking the thermistors to the LT3 S protection unit, at the terminals of the machine being protected: motor, etc., b using an ohmmeter with a voltage rating less than or equal to 2.5 V, measure the resistance of the probe circuit at the machine terminals, b depending on the nu ...
Safety relay PNOZcompact – square, simple, yellow
... (PL) e of EN ISO 13849-1, Safety Integrity Level (SIL) CL claim limit 3 of IEC 62061? Do you require a unit that covers the basic functionalities and provides three safety contacts and an auxiliary contact for your application? Do you set value on saving time through simple installation and maintena ...
... (PL) e of EN ISO 13849-1, Safety Integrity Level (SIL) CL claim limit 3 of IEC 62061? Do you require a unit that covers the basic functionalities and provides three safety contacts and an auxiliary contact for your application? Do you set value on saving time through simple installation and maintena ...
Section Overview
... digital and analog signals. Data and supply voltage data are transported together over a single cable. What makes it so outstanding is the fact that the AS-Interface system distinguishes itself by providing such a high degree of simplicity and effectiveness. This concept gives you tremendous flexibi ...
... digital and analog signals. Data and supply voltage data are transported together over a single cable. What makes it so outstanding is the fact that the AS-Interface system distinguishes itself by providing such a high degree of simplicity and effectiveness. This concept gives you tremendous flexibi ...
Data Sheet - System Sensor Canada
... Six zone, 24-volt deluge-preaction control panel (includes backbox, power supply, technical manual, and a frame-and-post operating instruction sheet) for single- and dual-hazard deluge and preaction applications. Same as PDRP-2001 but includes modified dress panel and ANN-LED Annunciator module. Sam ...
... Six zone, 24-volt deluge-preaction control panel (includes backbox, power supply, technical manual, and a frame-and-post operating instruction sheet) for single- and dual-hazard deluge and preaction applications. Same as PDRP-2001 but includes modified dress panel and ANN-LED Annunciator module. Sam ...
Timers Two-state Relay Type SG 125
... • Switches, with a preset delay, to opposite contact position at power supply interruption • Repeatability deviation: ≤ 1% • Output: 8 A SPDT relay • Plug-in type module • S-housing • LED-indication for relay on • AC or DC power supply ...
... • Switches, with a preset delay, to opposite contact position at power supply interruption • Repeatability deviation: ≤ 1% • Output: 8 A SPDT relay • Plug-in type module • S-housing • LED-indication for relay on • AC or DC power supply ...
The Freja charging study: A perspective five years later
... •Each single requirement is hard to meet, and combined it is more or less impossible to build a component that meet all requirements (voltage, leakage current, temperature and size). •Lowest leakage current is reached with own-built reed-relay (fA or pA) •Smallest size is reached by MEMS-based switc ...
... •Each single requirement is hard to meet, and combined it is more or less impossible to build a component that meet all requirements (voltage, leakage current, temperature and size). •Lowest leakage current is reached with own-built reed-relay (fA or pA) •Smallest size is reached by MEMS-based switc ...
SR Relay Operation
... Another SEW solution is an inexpensive SR relay. It is a normally-open switch that screws directly into the motor conduit box. By not requiring extra wiring from the control panel, it offers a true cost savings. The switching function of either an SR relay or an auxiliary contact is sometimes referr ...
... Another SEW solution is an inexpensive SR relay. It is a normally-open switch that screws directly into the motor conduit box. By not requiring extra wiring from the control panel, it offers a true cost savings. The switching function of either an SR relay or an auxiliary contact is sometimes referr ...
PCITS2000/2 Primary Current Injection Test Sets
... injection test is easier since there is not the need to break the primary circuit and it requires a lower current (up to 100 A) through the operating coil of the protective device. The time taken for the protection device to operate is then measured. A test winding is sometimes provided on the curre ...
... injection test is easier since there is not the need to break the primary circuit and it requires a lower current (up to 100 A) through the operating coil of the protective device. The time taken for the protection device to operate is then measured. A test winding is sometimes provided on the curre ...
ELK-980 Instructions
... 2. Connect the security equipment using a second 8 wire cord (J1). Depending on the equipment, this cord may be identical or it may have a male plug on one end and spade terminals on the other end. (PHONE CORDS ARE NOT SUPPLIED) 3. Connect two (2) wires from the ELK-980 to 12 Volts D.C. To power fro ...
... 2. Connect the security equipment using a second 8 wire cord (J1). Depending on the equipment, this cord may be identical or it may have a male plug on one end and spade terminals on the other end. (PHONE CORDS ARE NOT SUPPLIED) 3. Connect two (2) wires from the ELK-980 to 12 Volts D.C. To power fro ...
PP BCD TT 25/100 (/FM)
... As there is no risk of leakage currents, this SPD can also be installed before the electric power meter (acc. to TAB2000, installation rules of the Union of Germany Electric Works). This device is capable to discharge lightning current surges of 25 kA (10/350 µs) per phase and total 100 kA (10/350 µ ...
... As there is no risk of leakage currents, this SPD can also be installed before the electric power meter (acc. to TAB2000, installation rules of the Union of Germany Electric Works). This device is capable to discharge lightning current surges of 25 kA (10/350 µs) per phase and total 100 kA (10/350 µ ...
protective device for pumps / motors
... A relay combining both current sensing and voltage sensing operating principle can satisfactorily cover the basic protection requirements, by doing away with limitations. Microprocessor based protection relays may have such better protection level compared to solid state relays. This is because of f ...
... A relay combining both current sensing and voltage sensing operating principle can satisfactorily cover the basic protection requirements, by doing away with limitations. Microprocessor based protection relays may have such better protection level compared to solid state relays. This is because of f ...
protective device for pumps / motors
... A relay combining both current sensing and voltage sensing operating principle can satisfactorily cover the basic protection requirements, by doing away with limitations. Microprocessor based protection relays may have such better protection level compared to solid state relays. This is because of f ...
... A relay combining both current sensing and voltage sensing operating principle can satisfactorily cover the basic protection requirements, by doing away with limitations. Microprocessor based protection relays may have such better protection level compared to solid state relays. This is because of f ...
PIR-3 spec sheet.indd - Solid State Instruments
... bright yellow LED lamp indicate the system’s status at all times thus allowing a rapid check of the system’s performance without requiring any additional test equipment. The PIR-3 has an integrated circuit that checks each incoming pulse for its duration. If the incoming pulse is less than 20 millis ...
... bright yellow LED lamp indicate the system’s status at all times thus allowing a rapid check of the system’s performance without requiring any additional test equipment. The PIR-3 has an integrated circuit that checks each incoming pulse for its duration. If the incoming pulse is less than 20 millis ...
MIL-PRF-83536/33B 8 March 2010 SUPERSEDING MIL-PRF
... If the relay produced for MIL-PRF-83536/32 is similar in construction and design except for the suppression network to the relays produced for the MIL-PRF-83536/33, then reduced testing for qualification of MIL-PRF83536/32 relays may be performed concurrent with or subsequent to successful qualifica ...
... If the relay produced for MIL-PRF-83536/32 is similar in construction and design except for the suppression network to the relays produced for the MIL-PRF-83536/33, then reduced testing for qualification of MIL-PRF83536/32 relays may be performed concurrent with or subsequent to successful qualifica ...
RCCB-ID B type - Schneider Electric
... protection of persons against electric shock by direct contact (30 mA), protection of persons against electric shock by indirect contact (u 300 mA), protection of installations against the risk of fire (300 mA or 500 mA). ...
... protection of persons against electric shock by direct contact (30 mA), protection of persons against electric shock by indirect contact (u 300 mA), protection of installations against the risk of fire (300 mA or 500 mA). ...
BasisBlock MC1 - IPU Industrial Power
... an lifting mechanism. It opens to an angle of almost 180°. The door stop can mounted occur alternatively on the right or on the left side. Adjacent panels are compartmentalised with respect to one another by the two sidewalls and an air cushion, which is required by design when joining ...
... an lifting mechanism. It opens to an angle of almost 180°. The door stop can mounted occur alternatively on the right or on the left side. Adjacent panels are compartmentalised with respect to one another by the two sidewalls and an air cushion, which is required by design when joining ...
With a basic understanding of schematics, a schematic can be used
... If the operator has power, but the open or close buttons do not work, check that the IR relay is getting line voltage at the two black wires on the coil of the relay. A common problem with mechanical motors is that the start switch can stick open, cutting off voltage to the IR relay. A typical sympt ...
... If the operator has power, but the open or close buttons do not work, check that the IR relay is getting line voltage at the two black wires on the coil of the relay. A common problem with mechanical motors is that the start switch can stick open, cutting off voltage to the IR relay. A typical sympt ...
ReliaGear ND Descriptive Bulletin
... interlocking. Separate hard-wiring is not needed for the horizontal communication between the switchgear cubicles. Relion relays for feeder protection offer an optional cable fault detection function that can detect extremely short duration underground faults. These faults are typically undetectable ...
... interlocking. Separate hard-wiring is not needed for the horizontal communication between the switchgear cubicles. Relion relays for feeder protection offer an optional cable fault detection function that can detect extremely short duration underground faults. These faults are typically undetectable ...
Protective Relays - ElectricalManuals.net
... Figure 1: Edison Idea Relay The iXP-420 is a member of Cooper Power Systems’ Edison® Idea™ line of protective relays. The iXP-420 is a full-featured relay suitable for a variety of protection applications especially for two-winding transformer protection, monitoring, and monitoring and control. The ...
... Figure 1: Edison Idea Relay The iXP-420 is a member of Cooper Power Systems’ Edison® Idea™ line of protective relays. The iXP-420 is a full-featured relay suitable for a variety of protection applications especially for two-winding transformer protection, monitoring, and monitoring and control. The ...
Protective relay
In electrical engineering, a protective relay is a device designed to trip a circuit breaker when a fault is detected. The first protective relays were electromagnetic devices, relying on coils operating on moving parts to provide detection of abnormal operating conditions such as over-current, over-voltage, reverse power flow, over- and under- frequency. Microprocessor-based digital protection relays now emulate the original devices, as well as providing types of protection and supervision impractical with electromechanical relays. In many cases a single microprocessor relay provides functions that would take two or more electromechanical devices. By combining several functions in one case, numerical relays also save capital cost and maintenance cost over electromechanical relays. However, due to their very long life span, tens of thousands of these ""silent sentinels"" are still protecting transmission lines and electrical apparatus all over the world. An important transmission line or generator unit will have cubicles dedicated to protection, with many individual electromechanical devices, or one or two microprocessor relays.The theory and application of these protective devices is an important part of the education of an electrical engineer who specializes in power systems. The need to act quickly to protect circuits and equipment as well as the general public often requires protective relays to respond and trip a breaker within a few thousandths of a second. In these cases it is critical that the protective relays are properly maintained and regularly tested.