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83488001 Revision N
4.5.
Connecting the High Voltage Output
Ensure that the power supply is off and disconnected from the AC
input power and that all load capacitors are discharged and shorted to
ground before making any connections. Never handle the HV cable
while the supply is operating. Never operate the supply without a load
capacitor connected.
Before connecting the HV output cable, inspect the cable and check for signs of damage.
Always use the HV connector and cable provided with the power supply or an equivalent
substitute provided by TDK-Lambda Americas. Fully insert the connector end of the HV
cable and tighten the locking nut only "hand tight".
When operating above 20kV or 200Hz rep rate, silicone grease (such as Dow Corning DC-4)
must be applied to the HV cable before insertion into the HV connector. The grease is used
to displace air in the connector and reduce long-term corona effects. A cable greasing
procedure is available for download from the TDK-Lambda Americas web site.
The load ground must be connected to the chassis ground through a separate safety ground
cable with a minimum wire size of 10 AWG in addition to the HV output cable shield (see
Figure 5).
!
L1
L2
L3
N
HV Switch
LOAD CIRCUIT
SAFETY
GROUND
C
B
A
3
AC
POWER
N
Figure 5 Typical Load Circuit Connection
Some peak current will flow out of the power supply during discharge and return through the
HV return and system chassis. This current comes from voltage reversal in under damped
systems and from normal discharge of filter and cable capacitance. The path for this current
should not parallel control signal returns since the resulting voltages could interfere with
normal system operation.
Summary of Contents for 802 Series
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