7
HRRS 5kV and 10kV Series
Maintenance
4.3.3 Calibration
Procedure
To calibrate the HRRS-5kV/10kV unit, proceed as
follows
1. Con
fi
rm that the leakage resistance between
either binding post and the case ground is
>10
6
times the highest unit resistance, but
may be as low at 1 T
Ω
.
If this is not obtained, clean the area
around the binding posts as described in
Section 4.2.
2. Determine the allowable upper and lower
limits for each resistance setting of each
decade based on the speci
fi
ed accuracy (See
Speci
fi
cations on page 2).
3. Con
fi
rm that the resistances fall within these
limits.
If any resistances fall outside thee limits,
the associated switch assembly may
require service or replacement.
WARNING
Connect the GND terminal to earth
or other suitable ground in order to
maintain the case at a safe voltage.
W h e n e v e r h a z a r d o u s vo l t a g e s
(>45 v) are used, take all measures to
avoid accidental contact with any live
components.
U s e m a x i m u m i n s u l a t i o n a n d
minimize the use of bare conductors.
REMOVE POWER WHEN SETTING
SWITCHES.
P o s t w a r n i n g s i g n s a n d k e e p
personnel safely away.
4.4 Schematic
Figure 4-1 shows a schematic of an HRRS-5kV/10kV
unit.
Figure 4-1: HRRS 5kV and 10kV Series
Schematic Diagram
