3/5 - Klockner Moeller
... Directly from a PLC output: Using terminals A3 – A4 to connect to the PLC ...
... Directly from a PLC output: Using terminals A3 – A4 to connect to the PLC ...
Series 94 Peaktronics Positioner
... Register at our interactive web site for on line ordering, product availability, order tracking, and many useful features: www.asahi-america.com ...
... Register at our interactive web site for on line ordering, product availability, order tracking, and many useful features: www.asahi-america.com ...
SEL-787 Transformer Protection Relay Data Sheet
... restraint. Phase, negative-sequence, residual-ground, and neutral-ground overcurrent elements for backup protection. Breaker failure protection for two three-pole breakers. Optional Protection Features. Use the SEL-787 with optional voltage inputs to provide volts/hertz protection with frequency tra ...
... restraint. Phase, negative-sequence, residual-ground, and neutral-ground overcurrent elements for backup protection. Breaker failure protection for two three-pole breakers. Optional Protection Features. Use the SEL-787 with optional voltage inputs to provide volts/hertz protection with frequency tra ...
PDF Two Hand Relay BG5933, BH5933
... If both buttons are pressed while switching on the operating voltage (e.g. after voltage failure) the output contacts do not energize. The terminal S22 also serves as reference point for checking the control voltage. On BG 5933 there is only one terminal S12 and S22. Set-up instructions The device h ...
... If both buttons are pressed while switching on the operating voltage (e.g. after voltage failure) the output contacts do not energize. The terminal S22 also serves as reference point for checking the control voltage. On BG 5933 there is only one terminal S12 and S22. Set-up instructions The device h ...
Relays: WHY AND HOW TO UPGRADE YOUR HEADLAMP CIRCUIT
... On cars with full-current ammeters (mostly pre-1976 Chrysler products) it is best to take power from the alternator output terminal, rather than at the battery Positive (+) terminal. This so that when everything is in its 'normal' state (ie, engine running, battery charged) then the power for the he ...
... On cars with full-current ammeters (mostly pre-1976 Chrysler products) it is best to take power from the alternator output terminal, rather than at the battery Positive (+) terminal. This so that when everything is in its 'normal' state (ie, engine running, battery charged) then the power for the he ...
Intoduction to Automation System
... new product requires long set up time high unit cost relative to fixed automation large initial investment high unit cost relative to fixed or programmable automation ...
... new product requires long set up time high unit cost relative to fixed automation large initial investment high unit cost relative to fixed or programmable automation ...
Report on Frequent Tripping of Pragati GT (FEB-2010)
... the time delay may be kept 200ms more than the Zone-2 time delay in DTL system 2. The new DAVR being supplied by BHEL has two additional manual channels inherently and the loss of both auto channels would not result in unit outage. 3. BHEL DAVR is some times equipped with an in built VT failure dete ...
... the time delay may be kept 200ms more than the Zone-2 time delay in DTL system 2. The new DAVR being supplied by BHEL has two additional manual channels inherently and the loss of both auto channels would not result in unit outage. 3. BHEL DAVR is some times equipped with an in built VT failure dete ...
introduction
... • For devices burden expressed in VA at specified current or voltage, the burden impedance Zb is: • Zb = VA/IxI or VxV/VA ...
... • For devices burden expressed in VA at specified current or voltage, the burden impedance Zb is: • Zb = VA/IxI or VxV/VA ...
Protection Description
... in stator windings. This function may be used to protect generators connected to step-up transformers 100 % stator earth fault is a combination of two protection functions: b ANSI 59N/64G1: neutral voltage displacement, protection of 85 % to 90 % of the stator winding, terminal end. b ANSI 27TN/64G2 ...
... in stator windings. This function may be used to protect generators connected to step-up transformers 100 % stator earth fault is a combination of two protection functions: b ANSI 59N/64G1: neutral voltage displacement, protection of 85 % to 90 % of the stator winding, terminal end. b ANSI 27TN/64G2 ...
LIRW-Dimming-Controller_pdf
... The LIRW coverage pattern provides a 180o coverage area with a maximum coverage area of approximately 2100 square feet. The maximum sensing distance in front of the sensor is 40 feet, and 30 feet at each side. A “smallmotion” zone detects relatively small body movements and allows the lights to stay ...
... The LIRW coverage pattern provides a 180o coverage area with a maximum coverage area of approximately 2100 square feet. The maximum sensing distance in front of the sensor is 40 feet, and 30 feet at each side. A “smallmotion” zone detects relatively small body movements and allows the lights to stay ...
Protection and control HV/MV substation Sepam
... c Indication of phase and earth fault values at the time of breaking provides the operator with useful assistance in determining the causes and seriousness of faults. c The high level of electromagnetic compatibility (EMC) makes it possible to use advanced digital technology-based functions in elect ...
... c Indication of phase and earth fault values at the time of breaking provides the operator with useful assistance in determining the causes and seriousness of faults. c The high level of electromagnetic compatibility (EMC) makes it possible to use advanced digital technology-based functions in elect ...
Wiring - TCS Basys Controls
... • Digital Outputs are Dry Contact (Not Powered) … Power can be Supplied to External Relays by Running Power to the “R” Terminal ...
... • Digital Outputs are Dry Contact (Not Powered) … Power can be Supplied to External Relays by Running Power to the “R” Terminal ...
CM Technical Information Guide
... If the Cablemaster fails to operate at all, or only operates in one direction, the most likely cause of the problem is that some part of the electrical system has failed. The following guide will help the service technician to troubleshoot and repair the Cablemaster motor and control circuits. In ge ...
... If the Cablemaster fails to operate at all, or only operates in one direction, the most likely cause of the problem is that some part of the electrical system has failed. The following guide will help the service technician to troubleshoot and repair the Cablemaster motor and control circuits. In ge ...
Optimized Distribution Feeder Protection With Remote and Local
... feeder protection and control. The numerous features of numerical relays afford many functions that previously required single -function devices. For instance, typical hardware used in historic distribution feeder applications included single -phase overcurrent relays for phase and ground fault prot ...
... feeder protection and control. The numerous features of numerical relays afford many functions that previously required single -function devices. For instance, typical hardware used in historic distribution feeder applications included single -phase overcurrent relays for phase and ground fault prot ...
SC34 Discussion Session - Cigré Brasil
... compensate a transmission line and/or what are the challenges faced in the protection, control and monitoring of the capacitor banks as well as of the series compensated and adjacent transmission lines? Question #2: What economic and/or environmental issues deter the implementation of series ...
... compensate a transmission line and/or what are the challenges faced in the protection, control and monitoring of the capacitor banks as well as of the series compensated and adjacent transmission lines? Question #2: What economic and/or environmental issues deter the implementation of series ...
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.