Sep 14, 2012 · Some Electrical Engineers that are on here will also see : T1 = Tap 1 T2 = Tap 2 T3 = Tap 3 (of a Transformer secondary winding on the output reduced Voltage side) L1 L2 AND L3 are always used by myself for marking/tagging/labeling my 3 phase supply inputs and cable break outs/boot off's...

L1, L2, and L3 are the input three-phase terminals. T1, T2, and T3 are the output three-phase terminals. L1 is switched to T1, L2 is switched to T2, and L3 is switched to T3 when the contactor is turned ON. In some circuits, an overload relay is connected after the connector.

Oct 14, 2015 · There are many such conventions, In the US, the past 'standard' was L1/L2/L3 for incoming, T1/T2/T3 for outgoing and motors. In conclusion: L1 L2 L3 or R S T to input electrical energy. U V W for entry into the electric machines, either transformers or electric motors. Finally X Y Z to the end of the windings of electric motors.

3 days ago · The T1, T2, and T3 terminals are where the device wires connect to the contactor. The L1 contact connects to the T1 contact, the L2 contact connects to the T2 contact, and the L3 contact connects to the T3 contact.

Aug 1, 2014 · I don't believe terminal designations like L1, L2, L3 or T1, T2, or T3 are sufficient for identifying LINE terminations.

Dec 22, 2020 · AC contactor has main contact circuit and auxiliary contact circuit. L and T are the main contact point meaning, they represent the main contact identification of AC contactor. For example, a three-phase AC contactor is generally marked with T1, T2, T3 and L1, L2, L3 fonts.

L1 and L2 are part of the lumbar vertebrae that support the weight of the upper body, while T1 and T2 are part of the thoracic vertebrae that support the rib cage and anchor critical muscles and tendons involved in arm movement.

Jun 29, 2018 · What you need to do is to check for 24VAC at the coil terminals (usually on the side of the contactor) when the thermostat is calling for cooling. I'm guessing that you'll find that you don't have 24VAC present (that's what activates the contactor/relay to turn on the outside unit). The 24VAC comes from the house & thermostat.

Jan 10, 2019 · A-B-C are the conductors / phases etc. L1, L2, L3 are the terminals designation on the line side of the equipment, as opposed to T1, t2, t3 on the load side. If you just used A-B-C on the equipment, you would not be able to easily determine which side is line and which is load.

交流接触器l1、 l2、l3是接触器电源侧，接三相电源。 t1、t2、t3是负载侧接负载。 no为常开触点，通电以后触点闭合，变常闭触点。 交流接触器是接触器的一种，其典型结构分为双断点直动式(lc1-d/f*)和单断路转动式(lc1-b*)。