7
2.5 Potential Transformer Setup
Set up the PT according to the
PM295 User’s Guide
Rev. A1, Section 3.3.7
or in the
PAS295 User’s Guide
Rev. A1, Section 4.2.1.
2.6 Voltage Probes Connection
Connect the voltage probes to the PNA295-1 through the voltage connectors
marked
V
1/
V
2/
V
3/
V
N. Connect the probes to the line conductors according
to the power system configuration. (An optional set of extension cables for
the voltage probes may be ordered.).
WARNING
The voltage between phases V1, V2, V3 should not exceed 660 VAC
RMS (900 VAC peak).
2.7 Current Sensors Connection
Connect the current sensors first to the PNA295-1
and then to the
measured circuit.
The optional set of extension cables, 3 meters in length,
can be used with all current sensors.
There is a common connector for all types of current sensors in each phase.
NOTE: The nominal secondary inputs of the current sensors can be 1A or 3V.
WARNING
All clamps provided with the PNA295-1 include special protection
against overvoltage. If you use clamps
other
than those provided with
the PNA295-1,
do not under any circumstances
disconnect the
current clamps from their sockets while the clamps are connected to
the electrical wires. This can cause fatal injury and equipment
damage.
2.7.1 Standard Clamps
The PNA295-1 contains a set of
standard current clamps
with 1A
secondary nominal current and primary nominal current according to the
order specification (120A / 1000A / 3000A).
Maximum measured current is 120% of the nominal current.
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...
