Switching time adjustable solid state relay
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Switching time adjustable solid state relay
- Optical isolation and non-isolation between input and output circuits.
- Light Emitting Diodes (LEDs) indicate the on and off status separately.
- The timing of the switch can be adjusted arbitrarily within a specified range.
- The GAT14 model features a thyristor (SCR) output with zero current turn-off.
- The GAT06 model has a transistor output, which provides fast switching speeds and a low on-state voltage drop.
- The products are mainly used for automatic timing switch control in industrial automation, advertising lights, solenoid valves, electromagnetic clutches, and similar applications.
Model | GAT14 | GAT06 |
---|---|---|
Input Power Voltage | 440VAC, 660VAC | 12VDC to 24VDC, 12VDC to 200VDC |
Maximum Output Current | 10A to 180A | 10A to 100A |
On-State Voltage | ≤1.8 V | ≤1.5 V |
Control Voltage | 6VDC to 15VDC, 18VDC to 32VDC | |
Control Current | ≤30 mA | |
Turn-On Time | 0.5 sec to 30 min | |
Turn-Off Time | 0.5 sec to 30 min | |
Off-State Voltage | 800V, 1500V | 100VDC, 400VDC |
Isolation Voltage | ≥2000 V | Control to output non-electrically isolated |
Insulation Voltage | ≥2000 V | |
Insulation Resistance | ≥100 MΩ | |
Operating Temperature | -20°C to 75°C | |
Cooling Conditions | ≥20A with heat sink, ≥40A with additional fan cooling | |
Load Current Safety Factor | Resistive load: Use 2-3 times the current, Inductive load: Use 3-5 times the current |
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Current Margin Selection Based on Load Power:
- The larger the power of the load, the greater the current margin should be. Typically, the current capacity of a solid-state relay (SSR) is selected to be 2.5 to 5 times the load current.
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Protection Measures in the Output Circuit:
- Overvoltage Protection: Use a varistor. For a 440VAC SSR, select a varistor rated between 470V to 680V, and for a 660VAC SSR, choose between 1100V to 1200V.
- Overcurrent Protection: Incorporate a quick-acting circuit breaker or fast-acting fuse in the main circuit.
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Heat Sink Selection:
- The choice of heat sink should vary according to the SSR's current rating, mode of operation, and environmental conditions. It is better to choose a heat sink with a larger surface area rather than one that is too small.
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Input Control Terminal Wiring:
- Pay attention to the voltage level and polarity when wiring the input control terminal of the SSR. If the actual control voltage is higher than the rated voltage, a resistor can be connected in series in the control circuit to ensure that the control current is higher than the minimum required to turn on the SSR.
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Adjustment of the Time-Setting Potentiometer:
- Adjustments to the time-setting potentiometer should be made slowly. Avoid applying excessive force at the start or end points to prevent damage to the components.
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