Schaffner NSG 203 A Generator
Manufacturer:
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Model:
NSG 203 A
Date:
1990
Category:
Group:
Description:
Interference Simulator
Information
The NSG 203 A can be used to simulate short variations in
line voltage or line failures. The line voltage may for
example decrease for a few seconds from 220 (110) volts to
110 (55) volts or increase for 10 (8,3) msec, from 220 (110)
volts to 600 volts. For this operation a single external
variable voltage transformer is needed.
The maximum output voltage for the NSG 203 A is 600 V A.C.
(RMS).
For simulating a variation from a high voltage to an
abnormally low voltage (for example, if one voltage is 150V,
the other 280 V), two external variable voltage transformers
are needed. Cables to these transformers with corresponding
connectors are available as NSG 322 (one transformer) and
NSG 323 (two transformers).
A line failure or voltage variation will always start at
zero crossing. The line failure can be terminated at an
arbitrary moment, the line variation only at a zero
crossing. The duration of the line variation is therefore
always a multiple of 10 (8,3) msec.. f
Line failures or line voltage variations occur in regular
intervals. If however a logic 0 level (TTL) or a closed
electromechanical contact is applied to the !lgate11
terminal no failures or variations will occur. Using an
electromechanical timer with output applied to the gate
terminal the duration or number of failures or variations
can be preselected.
Using the push button a single event can be obtained if the
switch is in the “single shot"” position. Trigger pulses are
supplied to an Oscilloscope. One pulse (Start) will occur at
the start of failure or variation, the other (End) at
termination. Using the current transformer it is possible to
observe the change in output current at two moments.
The NSG 203 A connot be operated without a load. In order to
actuate the zero crossing detector the load current should
not (even at low supply voltages) drop below 100 ma.
Manual type:
User Manual
Pages:
28
Size:
519.81 Kbytes (532290 Bytes)
Language:
english
Revision:
Manual ID:
Date:
1990 05 01
Quality:
Scanned document, all readable.
Upload date:
2017 05 13
MD5:
079ee79fb499dc3338e302796afc90da
Downloads:
886