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CHAPTER 1 -
TRIDENT OVERVIEW
1.1
USING TRIDENT
The TRIDENT range includes the following products:
TRIDENT “Blind” including:
Trident 1U
Trident 1U1I
Trident 3U
Trident 3U3I
TRIDENT standard:
Trident 3U
Trident 3U3V
Trident 3U3I
With a
harmonic
option on the TRIDENT 3U3I.
Remark: This note describes the use of any product in the TRIDENT range.
The display functions and use of the keyboard that are described here do not apply to a
“Blind” TRIDENT.
Similarly, descriptions of the measurement functions of triphase units are to be considered in
monophase for versions 1U and 1U1I.
TRIDENT is used to perform measurement programs on three phase & single-phase low voltage (400V) and
medium voltage (11 or 20kV.) electrical networks using measurement sensors.
The device has only low voltage inputs.
TRIDENT 3U3I /I is intended for use with current clamps having a current output of 1A or 5A.
TRIDENT 3U3I /V is intended for use with current clamps having a voltage output of 1V to 5V.
During a program, it records:
Voltage faults, including those on the Neutral/Earth,
A running record of the RMS values of the voltages and currents, as well as the total active power,
The durations of frequency out-of-limits (measured on the phase 1 voltage input),
The durations of out-of-limits of the mean values of the voltages,
Five date stamped maxima of current in 1 sec. values and P in mean values (for the product of U & I).
TRIDENT has a local user interface, consisting of an LCD display of 4 lines of 20 characters each and 4
buttons (except, of course, for the « Blind » versions).
Communication with a PC is made via a series connection RS232 (RS485 is optional). The WINTRID PC
software is a necessary complement for TRIDENT which enables the study and analysis of the measurements
made by the equipment.
