Electrical Safety - HCC Learning Web
... The contacts of a relay or contactor must make good direct contact when energized for the device to function properly. One problem often encountered with contactors and relays is the contacts’ inability to make a good contact. The contacts can be burned, pitted, or stuck together. A set of burned or ...
... The contacts of a relay or contactor must make good direct contact when energized for the device to function properly. One problem often encountered with contactors and relays is the contacts’ inability to make a good contact. The contacts can be burned, pitted, or stuck together. A set of burned or ...
ir`H`/WE
... coil and the clapper hits against the bell gong. The circuit is thereby interrupted. The coil then no longer works as a magnet and so releases the armature, which returns to its original position and so again closes the circuit. This procedure is repeated until the circuit is opened by the switch. T ...
... coil and the clapper hits against the bell gong. The circuit is thereby interrupted. The coil then no longer works as a magnet and so releases the armature, which returns to its original position and so again closes the circuit. This procedure is repeated until the circuit is opened by the switch. T ...
Download PGR-6130 Datasheet
... protective functions include overload, overtemperature, phase unbalance, phase loss, and phase sequence. The PGR-6130 Electronic Overload Relay offers dependable protection and can be used on pumps, conveyor belts, ventilation fans and other small-motor applications that require standard protection. ...
... protective functions include overload, overtemperature, phase unbalance, phase loss, and phase sequence. The PGR-6130 Electronic Overload Relay offers dependable protection and can be used on pumps, conveyor belts, ventilation fans and other small-motor applications that require standard protection. ...
SELCO G-Line Data Sheet Generator Protection Relays
... • Over- and/or undervoltage • Over- and underfrequency • Reverse or forward power • For line-line or line-neutral • Adjustable trip level, time delay and hysteresis • Phase monitor (G3300) • Preset push button defines reference • Instant pick-up and delayed trip • Two separate contacts for ...
... • Over- and/or undervoltage • Over- and underfrequency • Reverse or forward power • For line-line or line-neutral • Adjustable trip level, time delay and hysteresis • Phase monitor (G3300) • Preset push button defines reference • Instant pick-up and delayed trip • Two separate contacts for ...
FlatFoto Digital Camera
... Step 9: Place the other circuit board on top making sure to line up the holes for the three screws. Step 10: Connect the ribbon and lock it with the black lever. Step 11: Place the front cover on making sure to feed the trigger wires through the top hole. Place all screws back in. ...
... Step 9: Place the other circuit board on top making sure to line up the holes for the three screws. Step 10: Connect the ribbon and lock it with the black lever. Step 11: Place the front cover on making sure to feed the trigger wires through the top hole. Place all screws back in. ...
CONTROLLING HOME APPLIANCES USING REMOTE
... the remote or by manually pressing switch S1 to ‘on’ state. The circuit works on regulated 5V which is derived from X1 and regulated by IC1. The TV/DVD remote controller produces 38kHz frequency IR RECEIVER MODULE: The IR receiver module operates at this frequency(38kHz). It is used to control ...
... the remote or by manually pressing switch S1 to ‘on’ state. The circuit works on regulated 5V which is derived from X1 and regulated by IC1. The TV/DVD remote controller produces 38kHz frequency IR RECEIVER MODULE: The IR receiver module operates at this frequency(38kHz). It is used to control ...
PRESS RELEASE
... switching loads up to 270Vdc, 10A and features a low ON resistance (reduced cooling requirements). These relays increase power density using existing design platforms and meet 270Vdc system requirements of MIL-STD-704. The LD00KM is optically isolated that feature fully floating power FET output tec ...
... switching loads up to 270Vdc, 10A and features a low ON resistance (reduced cooling requirements). These relays increase power density using existing design platforms and meet 270Vdc system requirements of MIL-STD-704. The LD00KM is optically isolated that feature fully floating power FET output tec ...
Relay
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"".