Ponovo PAC60Bi, Руководство пользователя

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PAC60Bi (PAC60Ci)/PAV120Bi POWER AMPLIFIER USER MANUAL
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3. PAV120Bi Voltage Amplifier
3.1 Basic Principle
This voltage power amplifier is a linear voltage power amplifier specially targeting at the PT
characteristics of power system with the strengths of high accuracy, high voltage and quick
response, which consists of below parts mainly:
1) High-speed differential input circuit for amplifier;
2) High-performance voltage power amplifier module;
3) Distortion detection and alarm circuit. Each amplifier has the overload or output distortion
detection circuit. When overload or short-circuit situation disappears, the amplifier can resume to
work automatically.
4) Temperature protection circuit. It will terminate the amplifier as soon as the temperature of
the amplifier reaches the dangerous degree and will let it resume to automatically when it has
been cooled down to a reasonable level.
5) Temperature-controlled fan. Fan will work at low speed if amplifier temperature is certain
low, which is benefit for prolonging its service life and reducing working noise.
3.2 Function
1) The differential input circuit can reduce the influence of the common mode noise to make it
possible that use long wires to connect across the amplifier and signal source, which will reduce
mutual effects between all amplifiers during high current output to guarantee the operation safety
of the simulator.
2) Automatic output voltage distortion and overload detection circuit, which is quite capable to
protect voltage amplifier against output overload or short-circuit fault. When overload and short
circuit situation disappears, the amplifier can resume to work automatically. If overload or
short-circuit occurs, the amplifier will be terminated automatically and the overload alarm light on
the front panel will turn on.
3) Pause control function (PAUSE). The pause button on the front panel can cut off signal input of
amplifier. Press the pause button, the output of the amplifier will become zero.
4) When the overheat protection is activated, the input of the amplifier will be terminated and the