PTE-300-V
Sheet 6
1. INTRODUCTION
The PTE-300-V is designed as a Portable Three Phase Unit that allows the user to test, as stand alone
unit or in combination with others, all type of protective relays.
Extremely compact and rugged, this unit incorporates the latest in the modern microprocessor technology
to achieve unbeatable output characteristics in terms of power, accuracy, low distortion, and dynamic
capability. This technology allows the unit to perform, without any external accessories, various specific
functions very often used in the relay testing.
All the output signals are digitally generated, amplified and controlled by the internal IGM’s (Intelligent
Generation Modules) in terms of amplitude, phase and frequency. A high accuracy and stability are
obtained in the output waveforms, which are absolutely independent of the main supply.
Contained in an aluminum IP-65 case, with a membrane keyboard that allows full manual control, and a
RS-232 com port for computer control, the PTE-300-V offers the best features actually available for on
site manual or automatic relay testing.
1.1. MAIN FUNCTIONAL FEATURES
The following are the more outstanding functions/features that the PTE-300-V has:
a) INTERNAL FREQUENCY GENERATOR
Allows the user to work in any frequency between 40 and 300 Hz. Also, frequency ramps and
steps can be easily preprogrammed from the front panel controls allowing testing the most
complex frequency, harmonics and synchronizing relays. The differential mode allows regulating
frequency differences respect to an Extern Reference, with a resolution of 1 mHz.
b) AVAILABLE REFERENCES
The power output has four different references available:
• Internal Frequency Generator (Freq.).
• The main supply phase (Line).
• The PTE BUS (BUS).
• The External Phase Reference (current or voltage).
c) POWER OUTPUTS
The voltage or current outputs are available, up to 300 V in three ranges and up to 8 A in two
ranges respectively.
Any power outputs combination is possible: two channels can work in voltage mode and the
other one in current mode, or even all of them can work in current mode. In current mode, the unit
allows channels parallel connection so it can supply up to 3 x 8 A = 24 A.
All the outputs have a dynamic capability. The output regulation can work independently or
linked in a three phase system, when PTE units are working together interconnected through
the PTE BUS, any combination of dynamic steps to 2
nd
values, can be selected in amplitudes and
phase angles for any type of fault simulation.
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