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G3PX
Precautions
Correct Use
Load
Only resistive loads can be connected to the G3PX. Contact your
OMRON representatives if it is necessary to connect inductive or
transformer loads.
Mounting
The three-phase, 60-A G3PX weighs approximately 5 kg. Pay ut-
most attention when mounting the G3PX so that the G3PX will not
fall thus resulting in injury.
Vertical Mounting
Flat Mounting
Note: In the case of flat mounting, the 30% derating of the
load current is required.
Close Mounting Example (Single-phase Models)
10 mm
10 mm
Note: Make sure that there is a space of at least 50 mm
vertically and at least 10 mm horizontally between
adjacent single-phase models.
18
10 mm
50 mm
10 mm
Wiring
Make sure that the lead wires are thick enough according to the cur-
rent.
Be sure to turn off power to the G3PX when wiring. The G3PX has
current leakage although the G3PX is turned off if the power supply
is connected to the G3PX, which may give an electric shock.
Do not wire power lines or high-tension lines along with the lines of
the G3PX in the same conduit, otherwise the G3PX may be dam-
aged or malfunction due to induction. Be sure to wire the lines of the
G3PX separated from power lines or high-tension lines or laid in an
exclusive, shielded conduit.
Tightening Torque
Apply the following tightening torque.
Output terminal:
20-A model: 1.47 N m
40-A model: 2.45 N m
60-A model: 4.12 N m
Terminal block:
Single-phase model: 0.98 N m
Be sure to protect the terminals with the protective cover after wir-
ing.
Wiring for Error Detection
If a contactor is employed and operated with the relay output signal
of the G3PX for error detection, make sure that the G3PX is closer to
the power supply than the contactor.
Instruments
Instrument
Thermal type
Digital type displaying
root-mean-square values
Moving-iron type
Rectifier type
Multimeter
Digital multimeter
The instruments are used for displaying room-mean-square voltage
and current values of the AC circuitry.
Operation Monitoring
The level indicator just indicates the phase of the load and it is not
highly precise.
Ramp Setting
There is a decrease in ramp if the internal DUTY adjuster is turned
counterclockwise.
DUTY
100%
If the External DUTY Adjuster is used, set the Internal DUTY
Adjuster to 100%.
CT Unit
The CT Unit varies with the G3PX-series model. Use the following
CT Units in combination with the G3PX models.
G3PX-2 0EH Series: G32X-CT
G3PX-2 0EHN Series: G32X-CT
G3PX-2 0EC Series: G32X-CT
G3PX
Remarks
Available
Not available (not
o a a ab e ( o
precise enough)
i
h)
DUTY
10%
HN
C
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