Ordering instructions

Brand KGC, model GJH33-40A custom processing is

Material Number - Scope Solid State Relay Featured Services -

Name of electrical and electronic equipment, solid state relays, WWW.COKGC.COM, COMKGC @ 163.COM, + 86 13877625497,

 

Solid State Relay, the English name for the Solid State Relay, referred to as SSR. Is a kind of solid-state electronic components composed of non-contact switching device, which uses the characteristics of electronic components, magnetic and optical properties to complete the input and output of the reliable isolation, the use of high-power transistor, power FET, one-way controllable Silicon and triac devices such as switching characteristics, compared with the electromagnetic relay, it is a mechanical movement, without moving parts of the device can replace the traditional electromagnetic relay switching device, and has the electrical characteristics of the electromagnetic relay Contact switching device, single-phase SSR for the four-terminal active devices, including two input control terminal, two output, the input and output optical isolation between the input plus DC or pulse signal to a certain current value, the output From the off-state into the on-state.

 

Selection notes:

1, zero-crossing type SSR is mainly used for "switch" role; random type SSR mainly used with phase-shifting trigger module for voltage regulation.

2, the common type SSR is mainly used for small current module or resistive load (dv / dt lower requirements) of the occasion; enhanced main. Use a large current module or inductive load (dv / dt higher requirements) of the occasion.

3, the current capacity options:

  (1), resistive load, select the SSR current level should be greater than or equal to 2 times the rated load current.

  (2), AC electromagnets, AC motors, intermediate relays, inductors and other loads, select the SSR current rating should be greater than or equal to 4 times the load current rating.

  (3), the transformer. Power compensation capacitors and other loads, select the SSR current rating should be greater than 5 times the load current rating.

 Radiator Options:

    Single-phase SSR in the conduction time of the maximum heat output according to the actual operating current x1.5W / A to calculate, three-phase SSR heat for the three-phase actual The sum of the load currents (about 1.5w per ampere current) should be taken into consideration when considering the ambient temperature, ventilation conditions (natural cooling, fan cooling) and SSR installation density. The reference standard shall not exceed 75 ° C for the operating temperature of the SSR backplane. Between the solid-state relay and the radiator mounting surface to be coated with a thin layer of thermal grease.

Note and Notes:

A: Load current safety factor, resistance load 2-3 times, inductive load of 5-7 times. The following is the derating factor of the next load current recommended at room temperature:

 , WWW.COKGC.COM, COMKGC @ 163.COM, + 86 13877625497,

Load Type

resistance

electro-thermal

White weaving lights

Alternating current electromagnet

transformer

Single-phase motors

Three-phase motor

Derating factor

1

0.8

0.5

0.5

0.5

0.12-0.24

0.18-0.33

B: heat and heat: SSR conduction, there is always a pressure drop at both ends, resulting in Joule heat, especially in high current work especially prominent. Therefore, thermal design, should take into account the ambient temperature, ventilation conditions, installation density and installation methods and other factors to ensure that the surface temperature is below 60 degrees. 1, for 5A the following SSR, should be installed in the ventilated environment better cooling window next to, or cooling wind blowing to the place. , WWW.COKGC.COM, COMKGC @ 163.COM, +86 13877625497, installation should be higher than the circuit board 1-2mm, while the bottom should be hollow. 2, for 10A and above SSR, should be based on the actual output current size of the radiator with different sizes, in the relay floor and radiator mounting surface between the application of uniform thermal grease, and then tighten with screws. When the output power is too large or the surface temperature close to 60 degrees, should use the fan cooling or water cooling. , WWW.COKGC.COM, COMKGC @ 163.COM, + 86 13877625497,

C: over-current protection: SSR work does not allow over-current, although the selection has been taken into account when the derating factor, but the load in the frequent start-off moment, very state of the overcurrent, artificial short circuit, may lead to SSR Permanent failure, it must be protected, generally in the output load circuit in series less than 20ms fast fuse.

 

Enquiry Mailto: COMKGC@163.COM

→We quotation

→You side Released PO to us

→We signed PO

→You side payment

→We delivery goods to your side.

Return to home page↑︿