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JUMO eTRON M100 Electronic Refrigeration Controller
... k Choice of “electrical” or “hot gas” defrosting process k 16A relay for cooling unit and 8A relay for defrosting and fan functions k 2 analog inputs for RTDs, KTY1X-6 or KTY2X-6 in 2-wire circuit k Customized linearization is programmable through the setup program k Operating hours counter with int ...
... k Choice of “electrical” or “hot gas” defrosting process k 16A relay for cooling unit and 8A relay for defrosting and fan functions k 2 analog inputs for RTDs, KTY1X-6 or KTY2X-6 in 2-wire circuit k Customized linearization is programmable through the setup program k Operating hours counter with int ...
Current-Only Directional Overcurrent Relay
... IRECTIONAL overcurrent relays [1] are widely used for protection of power transmission systems. Distributionside protection, e.g., for radial and ring-main units [2], mostly employs non-directional relays. Here, a fault generally means an overcurrent [3], mainly from a short circuit. The nondirectio ...
... IRECTIONAL overcurrent relays [1] are widely used for protection of power transmission systems. Distributionside protection, e.g., for radial and ring-main units [2], mostly employs non-directional relays. Here, a fault generally means an overcurrent [3], mainly from a short circuit. The nondirectio ...
Switching Low Offset Voltage
... Designing a 2 pole vs a 1 pole low offset voltage relays are quite different. Generally coil resistance must be as high a value as possible. The higher the coil resistance the lower the power generated across the coil. The lower the coil power the lower the heat it produces. This means we must caref ...
... Designing a 2 pole vs a 1 pole low offset voltage relays are quite different. Generally coil resistance must be as high a value as possible. The higher the coil resistance the lower the power generated across the coil. The lower the coil power the lower the heat it produces. This means we must caref ...
Galvanometer controlled recorder
... measured, it forces contact element 32 against ‘either con bracket are moved into direct alignment with the shutter tact 33 or 34, depending upon whether the reading being measured moves the pointer upscale or downscale. When 15 connected to said member, thereby removing the activa tion of said circ ...
... measured, it forces contact element 32 against ‘either con bracket are moved into direct alignment with the shutter tact 33 or 34, depending upon whether the reading being measured moves the pointer upscale or downscale. When 15 connected to said member, thereby removing the activa tion of said circ ...
CHAPTER 4
... help to imagine the spring that is part from the switch, but not shown on the symbol, tending the spring to press the moving contact down. Therefore, in the ‘normal’ position, the moving contact is down as far as it can go, whereas in the ‘actuated’ position, the contact is pushed up against the spr ...
... help to imagine the spring that is part from the switch, but not shown on the symbol, tending the spring to press the moving contact down. Therefore, in the ‘normal’ position, the moving contact is down as far as it can go, whereas in the ‘actuated’ position, the contact is pushed up against the spr ...
Datasheet
... The CSS Circuit Selector Switch is connected to the output of a single constant current regulator and switches that output to one or more airfield lighting series circuits. Common applications include circuits for PAPIs, stopbars, and taxiway centerlines. The CSS can also be used as the interface be ...
... The CSS Circuit Selector Switch is connected to the output of a single constant current regulator and switches that output to one or more airfield lighting series circuits. Common applications include circuits for PAPIs, stopbars, and taxiway centerlines. The CSS can also be used as the interface be ...
Download PGR-6150 Datasheet
... The PGR-6150 Motor Protection System provides 13 protective functions by utilizing both current and temperature inputs. It is a modular system consisting of the control unit and an operator interface (PGR-6150-OPI). The OPI allows programming and displays metered values. The PGR-6150 is used to prov ...
... The PGR-6150 Motor Protection System provides 13 protective functions by utilizing both current and temperature inputs. It is a modular system consisting of the control unit and an operator interface (PGR-6150-OPI). The OPI allows programming and displays metered values. The PGR-6150 is used to prov ...
Alarm Terminology - Absolute Process Instruments
... points, and one output relay per set point. Each set point is independent of the other and can be set between 0-100% of the input range. Electrical Interference: Electrical noise induced upon the signal wires that obscures (interferes with) the wanted information signal. Fail-Safe: Relay coil is ene ...
... points, and one output relay per set point. Each set point is independent of the other and can be set between 0-100% of the input range. Electrical Interference: Electrical noise induced upon the signal wires that obscures (interferes with) the wanted information signal. Fail-Safe: Relay coil is ene ...
G7L-2A-X DC24 Datasheet
... have as little dust, dirt, and harmful gas. • Using the Relay under high temperature, high humidity, or harmful gas may deteriorate its performance characteristics due to condensation or corrosive materials, resulting in failure or burn damage to the Relay. • The Relay weighs approx. 100 g. Be sure ...
... have as little dust, dirt, and harmful gas. • Using the Relay under high temperature, high humidity, or harmful gas may deteriorate its performance characteristics due to condensation or corrosive materials, resulting in failure or burn damage to the Relay. • The Relay weighs approx. 100 g. Be sure ...
Electromagnet - SuccessTutor
... through the coil, the soft iron hammer is magnetized with south pole and north pole alternately at the frequency equal to that of the mains. Thus the hammer is set into vibration at the same frequency. • Use T = 1/f, hence the time is obtained. ...
... through the coil, the soft iron hammer is magnetized with south pole and north pole alternately at the frequency equal to that of the mains. Thus the hammer is set into vibration at the same frequency. • Use T = 1/f, hence the time is obtained. ...
Relay
![](https://commons.wikimedia.org/wiki/Special:FilePath/Relay.jpg?width=300)
A relay is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. Relays are used where it is necessary to control a circuit by a low-power signal (with complete electrical isolation between control and controlled circuits), or where several circuits must be controlled by one signal. The first relays were used in long distance telegraph circuits as amplifiers: they repeated the signal coming in from one circuit and re-transmitted it on another circuit. Relays were used extensively in telephone exchanges and early computers to perform logical operations.A type of relay that can handle the high power required to directly control an electric motor or other loads is called a contactor. Solid-state relays control power circuits with no moving parts, instead using a semiconductor device to perform switching. Relays with calibrated operating characteristics and sometimes multiple operating coils are used to protect electrical circuits from overload or faults; in modern electric power systems these functions are performed by digital instruments still called ""protective relays"".