Lambda 303 Series Operator's Manual - page 21
INSTALLATION
83-489-009 Rev A
4-15
could interfere with normal system operation. Currents due to voltage reversal at high
rep. rates could damage the power supply. Generally, a resistor in series with the HV
output can be added to limit this current to an acceptable level. Refer to Application
Note 517 (available from the factory or at
www.lambda-emi.com
) for more information.
Figure 4-4 Typical Load Circuit Connection
Dress the high voltage cable creating a gentle curve making sure there are no sharp
bends as this will tend to reduce the cable's insulation strength. Strain relieve the load
end of the high voltage cable to prevent breaking of the center conductor. Keep the HV
cables as distant as possible from the input power and the control signals.
To connect the HV cable to the load it is necessary to remove the cable jacket, shield,
and any semiconducting layer that remains on the cable insulation after removing the
shield.
The cable outer jacket should be removed to reveal the cable shield. At least 12” or
300mm of outer jacket should be removed for suitable voltage hold-off. The exposed
shield should be trimmed to an appropriate length and terminated with a ground connec-
tion. With the shield removed, the black semiconducting layer is exposed. This layer
should be very carefully removed using a sharp craft knife, and a peeling action. Once
the semiconducting layer is removed the exposed EPR insulation should be cleaned
with IPA or an equivalent solvent. If any of the semiconducting layer remains on the HV
cable insulation it may cause the cable termination to fail.
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HV Switch
LOAD CIRCUIT
SAFETY
GROUND
A
B
C
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AC
POWER
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HV Switch
LOAD CIRCUIT
SAFETY
GROUND
A
B
C
3
φ
AC
POWER