Thermal Overload Trip; Scr Heat Sink Assembly - Hobart GPU-600 Operation And Maintenance Manual

Solid state transformer-rectifier

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(4) Thermal Overload Trip

The printed circuit board turns off the SCR firing or gate pulses and turns on the trip light when S5

overload thermostat (3, Fig. 5) opens. The power supply can not produce any DC output until the

S5 thermostat cools enough to automatically reset (close).

1. Surge Suppressor (2)

3. Overload Thermostat, S5

April 10/89 Revised

SCR Heat Sink Assembly

Figure 5

4. Metering Shunt, R12

5. Heat Sink Insulator (2)

6. Flyback Diode, CR7

OM-2010

2-1

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