The new type of relay refers to the electromagnetic relay developed and produced in order to meet the new special requirements and meet the use under special environmental conditions. Its main characteristics are small size, light weight, vibration resistance, shock resistance, and load range from low level. Load to 5A, 28 V rated load, the product has reliability index (failure rate grade) requirements, the product adopts resistance welding or laser welding sealed airtight sealing structure, mainly used in signal transmission and weak current in electronic control equipment Power switching.
New electromagnetic relays include: non-magnetic latching relays and magnetic latching relays. The non-magnetic latching relay is a monostable relay. The output state of the contact of the relay coil changes under the action of the specified voltage excitation, but after the coil excitation is cancelled, the contact output state is restored to the initial state. Magnetic latching relay is a kind of bistable relay, divided into single-coil structure and double-coil structure, coil excitation is electric pulse mode. For the single-coil structure relay, when the coil is under the action of the specified voltage excitation, the contact output state changes. After the coil excitation is cancelled, the contact can maintain the existing state. To change the contact output state, you need to add a specified value to the coil. The amount of reverse voltage excitation. For the double-coil structure relay, when the first coil is under the action of the specified voltage excitation, the contact output state changes. After the coil excitation is cancelled, the contact can maintain the existing state. To change the contact output state, the second The coil is excited by the specified voltage.
Due to the special performance of the new type of relay, its testing methods and testing requirements are also different from those of conventional relays. The main testing content includes electrical parameter testing, electrical performance index testing, mechanical performance index testing and physical performance index testing, etc.