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1.2
Output Voltage Control
The output from the equipment is controlled from zero by means of the output control. To
increase the output voltage turn the control knob in a clockwise direction.
Note:
The output cannot be energised unless the regulator knob is set to zero, thus operating the
zero voltage interlock switch.
1.3
Overload Protection
The equipment is fitted with a fuse and variable overload protection circuits as standard.
1.3.1
Variable overload
The variable overload protection system senses current changes in the high voltage circuit.
The trip levels are adjustable in two ranges each of 6 steps giving 2-12% and 20-120% rated
current.
Unit
KV5-100 mk2
KV3-250 mk2
KV4-300 mk2
KV5-200 mk2
The range change and selector switches are located on the front panel of the instrument. The
circuit will activate when the load current exceeds that set by the trip level selector switch.
WARNING
2, 4, 6, 8, 10, 12mA
5, 10, 15, 20, 25, 30mA
6, 12, 18, 24, 30, 36mA
4, 8, 12, 16, 20, 24mA
The variable overload trip circuit does not limit the output current.
Trip current ranges
X1
8
X10
20, 40, 60, 80, 100, 120mA
50, 100, 150, 200, 250, 300mA
60, 120, 180, 240, 300, 360mA
40, 80, 120, 160, 200, 240mA
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