1
1 The Portable Network Analyzer
1.
The PNA295-1 Portable Network Analyzer measures, records and analyzes
parameters of electrical networks. Being mobile, it enhances efficiency by
enabling on-site identification of power problems. The PNA295-1 meets the
requirements of a wide range of applications, from
power quality analysis
to
energy auditing
and
load profile recording
over a period of time.
The PNA295-1 includes all the
measuring, logging and analyzing
capabilities
of the PM295 Powermeter in a convenient, portable package.
The manufacturer’s PAS295 software package included in the PNA295-1
provides graphic data display and analysis capabilities.
The PNA295-1 is suitable for direct measurement of voltages up to 660V (or
greater when using a Potential Transformer). The PNA295-1 is equipped with
standard clamps with secondary current of 1A (default) or 5A. It is also
possible to use FLEX sensors with secondary voltage of 3VAC.
A unique advantage offered by the PNA295-1 is its ability to measure, with a
high degree of accuracy, a
current range of 100mA to 6A
, in addition to the
standard ranges. This additional measurement capability is made possible by
the combination of standard current clamps and the manufacturer's special
cables and electronic circuit.
This combination also enables the PNA295-1 to perform
current
measurements on
high voltage lines
via current transformers, by
measuring the secondary output of the external CT with 5A nominal
secondary current.
The PNA295-1 accuracy is a function of the accuracies of the PM295, the
clamps and the external transformers (PT and CT). Most of the PNA295-1
measurement error is due to the latter two elements.
The PNA295-1 has an
internal DC battery
which enables it to continue
working even when the power supply is disconnected for short intervals, as in
a power failure.
The contents of the PNA295-1 case are shown in
Figures 1-1
,
1-2
and
1-3
.
Section 2 of this manual provides installation instructions, including wiring
mode, CT and PT setup, as well as connection of voltage probes and current
sensors. Section 3 provides information on the internal battery and an
explanation of the PNA295-1 indicator lights.
Summary of Contents for PNA295-1
Page 1: ...PNA295 1 Portable Network Analyzer Installation and Operation Manual BG0149 Rev B...
Page 2: ...PNA295 1 Portable Network Analyzer Installation and Operation Manual...
Page 18: ...13 Figure 2 3 PNA295 1 Connections for 4 Wire System Direct Connection...
Page 19: ...14 Figure 2 4 PNA295 1 Connections for 4 Wire Grounded Delta System Direct Connection...
