TRANSIENT3000
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1.3.9.3 Characteristics and performance of the generator for a.c. tests
Test levels for continuous operation 1, 3, 10, 30 V
Test levels for short time operation 10, 30 V 1 to 10s Selectable short duration
time
Test frequencies 16,7Hz, 50Hz and
60Hz
1.3.9.4 Characteristics and performance of the generator for tests in the frequency range 15 Hz-
150 kHz
Frequency range 15Hz up to
150kHz
-10%,
+10%
Test levels 1, 2, 3, 4,
Decade time 10s up to 1000s
Step Sizes of the preceding
frequency value
2 to 10%
Voltage changes 20dB / decade.
20dB / decade.
Decreases
Increases
15 up to 150Hz
1.5kHz up to 15kHz
No test level is defined below 15Hz, excluding d.c.
Generator output is short circuit protected
For further information about short duration disturbance test see EXT-TRA3000 C-SHORT instruction
sheet.
1.3.10 Power line limits on EUT power input of TRA3000
Power line voltages greater than 280V and frequencies higher than 70Hz are the limit for the power
dissipation of the SURGE circuit. The TRA3000 measures the voltage and the frequency. When higher
voltages or frequencies are measured the following modes will be activated:
Gating Mode Gating Time Gating activated
0 No Gating F < 70Hz & V < 280Vrms
1 0.5 Seconds F < 70Hz & V >= 280Vrms
2 0.1 Seconds F >= 70Hz
Explanation of the gating mode:
The coupling path between the SURGE circuit and the power line will be opened and only closed during
Surge release.
Possible states during “RUN” modes:
0 Æ 1 0 Æ 2 1 Æ 2
1.3.11 Synchronisation of TRA3000 to mains frequencies
Synchronisation to EUT power input
A minimum voltage of 30V rms must be applied to the power input on the rear of the TRA3000 (PWR1 or
PWR2) to synchronize the Surge to the mains. The LED within the connector on the front panel indicates a
proper synchronisation.
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