1
HRRS 5kV and 10kV Series
Introduction
Chapter 1
INTRODUCTION
1.1 Overview
The High Resistance, 5kV and 10 kV Decade
Substituters (Figure 1-1 and Figure 1-2) is a family
of instruments that answers the need of the calibration
and test community for decades and working stan-
dards that go up to 10 T
Ω
, offering a broad choice of
high-range, excellent performance resistance sourc es.
High values of resistance are available for use at high
voltages, without sacri
fi
cing accuracy, stability, and
temperature and power coef
fi
cients of resistance.
The HRRS-5kV/HRRS-10kV units employ state-
of-the-art precision resistors. They are designed
speci
fi
cally for operation at high voltage, with very
low leakage to minimize degradation of accuracy.
The standard models offer a choice of one to nine
decades. The panels are clearly labeled showing the
step size and maximum allowable applied input for
each decade. Custom requirements outside of the
standard models can be satis
fi
ed.
To ensure low leakage, the connection terminals are
insulated with Kel-F high-resistance, non-moisture-
absorbing material.
With a resolution as low as 10
Ω
and a maximum
available resistance of 10 T
Ω
, these High-Resistance,
High-Voltage units may be used for exacting preci-
sion high-value resistance applications that require
voltages of up to 5kV or 10 kV.
Applications include calibration of meters and meg-
ohmmeters, and checking of electrochemical and bio-
medical sensors and instruments. These instruments
are useful wherever high resistances are required,
such as in testing high-impedance ampli
fi
ers and the
insulation of low-power circuits.
The HRRS 5kV and 10kV series complement the
HARS series which provides resistance steps as low
as 1 m
Ω
. The units may be rack-mounted to serve
as components in measurement and control systems.
Figure 1-1: Example of an HRRS-5kV unit
with 7 decades
Figure 1-2: Example of an HRRS-10kV unit
with 4 decades
