Type:Logic ICs
Condition:New
Place of Model:LSR-TH3Z300D3
Power supply mode:alternating current
contact form:Often open type
This package includes the following accessories:
(1) 300A solid state relays*3
(2) Radiator
(3) Fan + mesh cover
(4) 75 degree temperature switch
(5)Wiring arrangement
(6)A set of trigger connection wires
(7)Thermal conductive silicone grease
[Control mode]: DC-AC
[Load Voltage] 30-480 VAC
[Control Voltage]: 3-32VDC
Product Size: Long: 245MM Width: 125MM High: 170MM
Three-phase solid-state relay 300A I. Characteristics of this productPhotoelectric isolation between control circuit and load circuit.(2) High temperature bare sheet welding, thyristor output, zero current switching off, instantaneous strong ability to withstand overload.(3) Voltage zero-crossing is turned on and the control state is indicated by light emitting diode.(4) Built-in resistance-capacitance absorption circuit, such as inductive load can be added with varistor protection.The control signal is compatible with TTL logic._Rectangular shape, epoxy resin filling (module), easy to use, optional safety shield._Proper radiator should be equipped when using, and forced air cooling should be strengthened when necessary._Flame retardant engineering plastic shell, copper base plate_Wide range of uses: e.g.
Industrial Electric Furnace, Oven, Water Pump, Motor, Electrical Switchgear, Automation ControlEquipmentsII. Product OverviewHigh-power solid-state relay is a kind of contactless on-off electronic switch, in which two small terminals are input control terminal, the other two terminals are output controlled terminal, three-phase is six-terminal, three-in-three-out, photoelectric isolation is used in the middle, and photoelectric coupling is used between input and output. When DC or pulse signals are added to the input terminal, the output terminal can change from the off state to the on state (when there is no signal, it is blocked), thus controlling the larger load. The whole device has no movable parts and contacts, and can achieve the same functions as mechanical electromagnetic relays.Solid state relay is a contactless switching element composed of solid elements. Compared with electromagnetic relay, it has the characteristics of reliable operation, fast switching speed, no noise, long life, small size, no spark, corrosion, explosion and vibration resistance. It has a series of advantages, such as small external interference, compatibility with logic circuit, strong anti-interference ability, fast switching speed and convenient use. Therefore, it has a wide range of application fields. It has the potential to gradually replace traditional electromagnetic relays, and can be further extended to areas such as computers where traditional electromagnetic relays can not be applied. At present, it has been widely used. Computer peripheral interface equipment, electric furnace heating and constant temperature equipment; CNC machinery, remote control system, industrial automation device; signal lights, traffic lights, lighting stage lighting control equipment; instruments and instruments, medical instruments, photocopiers, color expander, rubber and plastic machinery, automatic washing machine; in addition, explosion-proof and anti-explosion in chemical industry, coal mine, etc. It has been widely used in wet and anti-corrosion occasions and has become an ideal replacement product for relay families.3. Matters needing attention in selecting solid state relay products:When choosing a product, different margins should be left on the current grade according to the nature of the load. (When resistive load is applied, it can be selected according to 3 times load current. When the inductive or capacitive load is applied, it can be selected according to 5 times of the load current.)According to the relationship between load current and ambient temperature, when ambient temperature is high or heat dissipation condition is not good. Current capacity should be increased. In order to prevent short circuit of load in use,It is required to connect the corresponding fast circuit breaker or fuse in series with the product in the load circuit.When inductive load is applied, the output terminal should be connected with varistor in parallel to prevent thyristor from being damaged when overvoltage occurs. Selection of varistor (MOV): 430-470V for 240V, 680-750V for 440V and 1100-1200V for 660V.During installation, it is required that the contact surface between the radiator and the product should be smooth and smooth, and a layer of thermal conductive silicone grease should be evenly coated on the surface of the radiator, then the screw with flat washer and spring washer should be tightened and fixed symmetrically.After the first shutdown of the solid state relay, the fixed screw should be tightened again while the residual temperature is still available, so that the bottom plate of the solid state relay and the surface of the radiator can be closely contacted to achieve better heat dissipation effect.The nominal current of different types of solid-state relays is the nominal current at the ambient temperature of 40 degrees Celsius, so the heat dissipation should be sufficient!
