8
The unit is supplied with a plug fitted to the external interlock socket on the rear of the unit.
The plug contains a shorting link to enable the unit. If external interlocks are used, the
interlocks should replace the shorting link. Please note that the output will not switch on
without either the link fitted in the plug or a closed external interlock circuit.
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
Trip current ranges
X1
X10
KV5-100 mk2
2, 4, 6, 8, 10, 12mA
20, 40, 60, 80, 100, 120mA
KV3-250 mk2
5, 10, 15, 20, 25, 30mA
50, 100, 150, 200, 250, 300mA
KV4-300 mk2
6, 12, 18, 24, 30, 36mA
60, 120, 180, 240, 300, 360mA
KV5-200 mk2
4, 8, 12, 16, 20, 24mA
40, 80, 120, 160, 200, 240mA
KV6-80
1, 2, 4, 6, 8, 10mA
10, 20, 40, 60, 80, 100mA
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
The variable overload trip circuit does not limit the output current.
