Atec Solar-7399-2 - Manual

ment of the scope, it is ready for viewing the
spike. When the READY lamp indicates the storage
circuit has been charged to the selected peak
voltage, the pushbutton is depressed which
triggers the sync circuit of the oscilloscope.
All connections to the Model 7399-2 are isolated
from the chassis. The chassis is grounded through
the third wire in the power cord in accordance
with safety regulations.
The Model 7399-2 is provided with two plug-in
assemblies which enable it to be configured for
series or parallel injection as described in the
appendices of MIL-STD-1399:
1) Using the P/N 739945 Plug-in Unit, the
equipment is ready for series injection as
described in Appendix B of the MIL spec.
In this mode, the operation of the Model
7399-2 is identical to Model 7399-1. When
using the P/N 739945 Plug-in Unit, heavy
duty output jacks provide connections in
series with loads up to 100 amperes r.m.s.
The mating plugs are well insulated and
will handle power line voltages in excess of
500 volts, r.m.s.
2) Using the P/N 739950 Plug-in Unit,
the equipment can be used for parallel
injection of the spike on single or three
phase power circuits as described in
proposed Appendices A, C, and D of the
MIL spec. This method requires the use of
external components determined by the
characteristics of the item being tested.
MODEL 7399-2 SPIKE GENERATOR
2500 VOLTS
for conducted transient susceptibility testing
APPLICATION
The Model 7399-2 Spike Generator is a “Big Bang”
unit capable of providing high energy spikes
with amplitudes adjustable up to 2500 volts,
peak, into low impedance loads, as required
by paragraph 4.8.5.4 of MIL-E-16400G and
described in MIL-STD-1399 Appendices A, B, C,
and D. The shape of the spike approximates Figure
1 of MIL-STD-1399, Section 103, as shown.
DESCRIPTION
Modes of operation:
s Repetitive spikes up to 2500 volts peak at two
pulses per minute.
s Single non-synchronous spike actuated by a
pushbutton on the panel.
s Sync functions provide for placing the spike on
the power frequency waveform of 50, 60 or 400
Hz power lines. The spike can be moved to any
point o the sine wave from 0
ᑻ to 360ᑻ.
A SYNC TEST function is provided for adjusting
the trigger circuit of the associated oscilloscope
for response to a single pulse. After this adjust-
KV
2.5
2.0
1.5
1.0
0.5
0
0 20 40 60
0.5 OHM LOAD
OPEN CIRCUIT
80 100 120
MICROSECONDS
21