Atec Solar-Electronics-LISN-Simulation Networks - Manual (Page 2)

HIGH VOLTAGE, HIGH CURRENT,
HIGH FREQUENCY
LINE IMPEDANCE
STABILIZATION NETWORKS
Five microhenry unit
To answer the need to cover the frequency
range up to 1.0 GHz and to accommodate
higher line voltages and currents, we
offer the Type 8902-5-TS-500-N Line
Impedance
Stabilization Network. At the
low frequency end of the spectrum, this
network provides the impedance charac-
teristic of all other 5 microhenry units and
maintains the required 50 ohm (
DŽ20%)
impedance up to 1.0 GHz. It is rated at 500
v.a.c. and 500 amperes., a.c. It is a single
line unit in an aluminum case measuring
7.625" x 7.625" x 19". The line and load
terminals are.5-20 threaded brass studs.
The r.f. connector is a conventional Type N.
Fifty microhenry unit
For operation up to 100 MHz with a 50
microhenry coil, the Type 8905-50-TS-
50-N is a Line Impedance Stabilization
Network rated at 270 v.a.c., 50 amperes.
The impedance characteristic meets the
requirements at 10 KHz, sloping upward
toward 50 ohms as frequency increases
and maintains the required 50 ohm
(
DŽ20%) impedance up to 200 MHz.
Inductance, Current Resistor Resistance
Type Number** microhenries Rating across coil in series
8901-4-TS-15-BP 4 15 A. 25 ohms 250.00 milliohms
8903-4-TS-100-BP 4 100 A. 25 ohms 0.36 milliohms
8904-4-TS-15-BP 4 15 A. 25 ohms 50.00 milliohms
LINE IMPEDANCE SIMULATION NETWORKS
FOR A.C. AND D.C. APPLICATIONS
In the application of Line Impedance Simulation Networks, some specifications require that NASA units
(4 ȖH) be used on both a.c. and d.c. power circuits. To do this, the large electrolytic capacitor stipulated
for d.c. applications must be disconnected when the network is used on a.c. lines. Our engineers
believed that the end-user might not be aware of this detail or would not know whether the capacitor
was in place at the time the test was being set up. A SPECIAL SERIES OF UNITS IS OFFERED WHICH
AUTOMATICALLY CONNECT OR DISCONNECT THE CAPACITOR WHEN THE NETWORK IS CONNECTED
TO A POWER LINE.
When the power line is 24 to 30 volts d.c., the capacitor is automatically connected into the circuit.
However, when the power line is 110 to 115 volts a.c., the capacitor is automatically switched out of the
circuit. Since the switching function is automatic, there is no need to operate a switch or disconnect a
wire to accomplish this. The end-user does not need to think about it.
These innovative combination networks are available in current ratings up to 100 amperes and with
specified resistance values across the coil and differing series resistance in the circuit.
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