Three phase solid state relay 80A 380VAC ssr AC control Solid State Relay
Technical Parameters
| Model |
SSR-3 A3880Z |
| Control Voltage |
70-280VAC |
| Min Control Current |
5mA |
| Max Control Current |
20mA |
| Load Voltage |
380VAC |
| Load Current |
80A |
| Off Leakage Current |
<=5mA |
| On Voltage |
<=1.6V |
| On-off Time |
<=10ms |
| Ambient Temperature |
-30~+70 ºC |
| Mounting Method |
Screw fixed |
Working principle of solid state relays
1.Solid state relays is a kind of electronic switch that without mechanical contacts, adopting photoelectric device and transformer to electric isolate or signal couple the control circuit (input circuit) and load circuit (output circuit), drive solid power device to make and break or switch the load circuit. Although there are various solid state relays of different specifications in the market, their working principle is similar, and mainly made up of input (control) circuit, drive circuit and output (load) circuit.
2.The input circuit of solid state relays is used to input control signal and work as the triggering signal source. Generally, the input circuit of solid state relays is DC input (like resistant input, the input current will have a linear variation when voltage changes), but some are AC input.
3.The drive circuit of solid state relays includes isolating and coupling circuit, functional circuit and triggering circuit. At present, we adopt photoelectric coupler and high frequency transformer for isolating and coupling circuit. The photoelectric coupler that often used is light-triode, light- bidirectional thyristor and light- diode array (light-volt), etc. The high frequency transformer coupling, under a certain input voltage, a self-oscillation of 10MHz is formed, and transmits the high frequency signal coupling to secondary of transformer through the transformer's magnetic core, and finally drive the trigger circuit. The functional circuit is mainly applied in circuits of solid state relay that require some special functions, it also perfects the drive circuit, includes detection and rectifying, acceleration, protection and display. The trigger circuit is used to supply triggering signal for the output device.
4. The output circuit of solid state relay realize to make or break the load circuit under the control of triggering signal. It usually include power device (chip), some also include absorption circuit that has transient inhibitory action. At present, we often adopt output device such as bidirectional thyristor (Triac), single-directional thyristor (Thyristor or SCR), MOS field effect tube (MOSFET), crystal triode (Transistor) and insulating grid type bipolar transistor (IGBT) for solid state relays.
Product details
Wiring diagram
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Q1.Are you a factory or trading company ?
A:We are a factory founded in 2010 and have over 10 years'OEM and international trading experience .
Q2.What's your main product?
A:Our main products are time Relay, voltage Relay, motor protector, current relay,solid state relay
Q3.Do you accept OEM or ODM?
A:Of course.
Q4.What's your main payment term?
A:T/T ,LC ,D/P.
Q5.Any quality guarantee or after-sales service?
A:All the products have 2 years' Guarantee. If any quality complaint , we will give out solution within 5 days
Q6.Can sample fee be returned back to me ?
A:Sample amount can be deducted from your bulk order payment when order quantity is over 1000 pieces at the first time.
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