Camco P Series Mains Protections Inrush Current Limitation, Mains Over Voltage Detection, Fan

4 OPERATION

P.20

4.4 Mains Protections

4.4.1 Inrush Current Limitation

Within 2 seconds of the amplifier being switched on, the inrush current limiter will increase mains current from nearly zero to nominal value.This value depends on program material, output level and speaker loads.

4.4.2 Mains Over Voltage Detection

Mains over voltage detection is always operative. When the mains voltage exceeds approx. 267 V (230 V operation) or 134 V (120 V operation), the ampli- fier will be switched off. The system will try to start in intervals and will return with a soft start when the regular mains voltage returns.

4.4.3 Mains Failure Detection

Mains failure detection is always operative. When the mains supply is inter- rupted for about 2 mains cycles, the amplifier will be switched off. When the mains voltage returns to a normal value, a soft start occurs.

4.4.4 Fuse Protection

The average mains current can peak temporarily, depending on the load im­ pedance and type of signal, at values significant higher than the nominal value allowed by the fuse protection.

Continuous monitoring of the fuse protection status allows the conditions that would trigger the fuse protection to be predicted. In order to avoid shut-down of the amplifier due to current overload, the amplitude of the input signals will be limited and by hard overloads the amp will be muted for the time.

USER MANUAL

TECTON POWER AMP SERIES

4.5Main SMPS Protections 4.5.1 Over Current Protection

Main SMPS (Switched Mode Power Supply) transformer current is continuously monitored. If over current occurs, the main SMPS immediately stops working. Should there be an internal failure, this feature prevents other parts being damaged.

4.6Fan

The fan mounted in the TECTON operates permanently, but as long as the temperature remains below 40 °C it runs at its slowest speed and can hardly be heard. The highest detected temperature from either channel controls the speed of the fan: above 40 °C the speed is increased until it reaches its maximum value.