Compliance West MegaPulse 1.2x50-12.3PF-1, Instruction Manual

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5
Section 2
Introduction
This manual contains complete operating, maintenance and calibration information for the
Compliance West USA MegaPulse 1.2x50-12.3PF-1 500ohm 0.5J Impulse Tester.
In case of trouble, the test can be immediately terminated at any time by turning the rear-
panel power switch to the OFF position.
Before the test can commence, the unit must be armed by pressing the CHARGE Button.
The test will not begin until the TRIGGER Button is pushed.
Your tester is warranted for a period of one year upon shipment of the instrument to the original
purchaser.
Specifications
Specifications for the MegaPulse 1.2x50-12.3PF-1 500ohm 0.5J are listed in the Error! Reference
source not found. below and the component designations are shown in
Figure 1
.
Figure 1. General Electrical diagram.
Output Waveform Voltage C1 R1 R2 C2
1000 Vp, 0.5 J 1.2x50 us 0, -10% 1 µF
68 Ω 500Ω
0.8 nF
5000 Vp, 0.5 J 1.2x50 us 0, -10% 40 nF
1700 Ω 500Ω
0.8 nF
12000 Vp, 0.5 J 1.2x50 us 10, -10% 6.9 nF
9792 Ω 500Ω
0.8 nF
Table 1. Nominal Component Values for MegaPulse Circuit.
Note: Multiple output if apply, otherwise single one.
The nominal component values are determined based on the requirement to have 0.5 Joules (J) of
stored energy in capacitor C1, and deliver the 1.2 x 50 uS open-circuit impulse waveshape with
the specified peak voltage (Vp) to the output through a series resistance (R3) of 500 Ohms.
Nominal component values are determined from the calculations provided in IEC 60255-5 Annex
C, which is copied in
Figure 2
.