What does 86 mean on a relay?
Numbers of a Relay Note that each pin is numbered. 85 and 86 are the coil pins while 30, 87, and 87a are the switch pins. 87 and 87a are the two contacts to which 30 will connect. If the coil is not activated, 30 will always be connected to 87a. Think of this as the relay in the Normally Closed (OFF) position.
What is an 86 device?
86 Lock-Out Relay Electrically operated hand, or electrically reset relay or device that functions to shut down or hold equipment out of service upon the occurrence of abnormal conditions.
What is a 62 relay?
62 Time-delay stopping or opening relay A time-delay relay that serves with the device that initiates the shutdown, stopping or opening operation in an automatic sequence or protective relay system.
What is a 52 relay?
A 52 AC circuit breaker is a device that is used to close or interrupt an AC power circuit. A relay that operates when the power factor in an AC circuit is above or below a preset value.
What is 85 and 86 on a relay?
85 will be used to ground your relay, while 86 will be connected to the switchable power. 87 and 87a will be connected to your controlled accessories that you wish to turn on and off with your relay.
What is an 86 lockout?
Introduction. Many utilities employ lockout relays (ANSI device number 86, electrically operated, hand or electrically reset) that function to shut down and hold equipment out of service on the occurrence of abnormal conditions.
What is TCS relay?
Such Trip Circuit Supervision (TCS) relays are intended for a continuous supervision of circuit breaker trip circuit, and to give an alarm for loss of auxiliary supply, faults on the trip-coil or its wires independent of the breaker position, faults on the breaker auxiliary contacts and faults in the supervision relay …
What is an 83 relay?
83 Automatic Selective Control or Transfer Relay. 84 Operating Mechanism. 85 Communications, Carrier or Pilot-Wire Relay. 86 Lockout Relay.
What is a 78 relay?
78 – Phase-Angle Measuring Relay. 79 – AC-Reclosing Relay. 81 – Frequency Relay. 83 – Automatic Selective Control or Transfer.
What does 87 or 5 stand for in the automotive relay terminal labeling systems?
3, Automotive Relay terminals: such as 30 for the movable end, 87 for the normally open end, 87a for the normally closed end, 85, 86 for the coil end, also useful for 1 to 5, 1, 2 for the coil end, 3 for movable End, 4 represents the normally closed end, and 5 represents the normally open end.
Can a 5 pin relay be used in place of a 4 pin?
Some 5 pin relays are SPDT (switch between the two pins) and some are DPST (like the main relay- connect 2 pins at the same time.) If you want to use a 5 pin in place of a 4 pin, you shouldn’t have to remove the pin. The socket should be the same, but the center pin won’t have a contact in it.