What is contactor in battery?
What is contactor in battery?
Basically a heavier-duty version of the relay, a contactor is used to switch power to any of the loads supplied by the traction battery in an EV. Contactors, relays and solenoids are all names for an electromechanical switch.
What is the purpose of a contactor?
A contactor is a special type of relay used for switching an electrical circuit on or off. They are most commonly used with electric motors and lighting applications.
What is the difference between starter contactor and battery contactor?
A contactor is an electrically controlled switch similar to a relay. Whereas, a starter is a contactor with the addition of an overload relay. A contactor applies voltage to a contactor coil to close the contacts and to supply and interrupt power to the circuit.
What are the types of contactor?
There are different types of contacts in a contactor, and they are; auxiliary contact, power contact, and contact spring. The power contact has two types that are; stationary and movable contact. Material for making contacts must have a high welding resistance and stable arc resistance.
What is contactor in EV?
A high-voltage contactor, also called a high-voltage relay without distinction in the industry, is widely used in electric vehicles (EV) and hybrid electric vehicles (HEV). It is an electromechanical switching device with a coil to generate a magnetic force that mechanically operates an electric contact.
What is difference between relay and contactor?
Control Relay: It is a device through which contacts in one circuit are operated by an alteration in conditions in the same circuit or in associated circuits. Contactor: It is a device which is used for repeatedly establishing and interrupting an electric circuit under normal conditions.
Is a contactor the same as a starter?
The mechanical elements of starters and contactors are identical. The contactor applies voltage to a contactor coil to close the contacts and to supply and interrupt power to the circuit. A motor starter is simply a contactor PLUS an overload relay and is rated by motor HP or amperage.
What is AC1 AC2 AC3 and AC4 duty?
1)AC1– Non-inductive or slightly inductive rows. 2) AC2– Starting of slip-ring motors. 3) AC3– Starting of squirrel-cage motors and switching off only after the motor is up to speed. ( Make Locked Rotor Amps (LRA), Break Full Load Amps (FLA)) 4) AC4– Starting of squirrel-cage motors with inching and plugging duty.
How does a contactor work on a battery?
Battery Contactor Power IN from battery Power OUT to Control Unit or main bus Wire to VP-100/200 Control Unit J5 Pin 5 or to Master Switch. When this post is grounded the contactor is closed. If you wire this side to the battery the contactor will not work. 3 1 2
What kind of device is an electrical contactor?
What is an Electrical Contactor? A contactor is an electromechanical control device that used to make or break the connection between the load and power supply. The use of a contactor is similar to the relay.
How is the power level of a contactor controlled?
A contactor is typically controlled by a circuit, which has a much lower power level than the switched circuit, such as a 24-volt coil electromagnet controlling a 230-volt motor switch. Unlike general-purpose relays, contactors are designed to be directly connected to high-current load devices.
What’s the difference between a relay and a contactor?
Unlike general-purpose relays, contactors are designed to be directly connected to high-current load devices. Relays tend to be of lower capacity and are usually designed for both normally closed and normally open applications. Devices switching more than 15 amperes or in circuits rated more than a few kilowatts are usually called contactors.