Reynolds Industries Inc. - High Voltage Connectors, High Voltage Cable Assemblies, High Voltage Wire, High Voltage Cable, High Voltage Capacitors

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Next (In-series Gas Discharge)

Gas tubes may be combined with common circuit devices to form hybrid protection systems having protection characteristics superior to those of the individual components on their own. Typical supplemental devices used are resistors, diodes, inductors, capacitors, and varistors.

Four typical circuits are illustrated below. In circuit 1) the inductor develops a voltage from the transient surge current thus permitting the spark gap to reach its impulse breakdown voltage. The diode clips any overshoot voltage at the circuit output, diode destruction is prevented upon breakdown of the spark gap. Circuit 2) illustrates a similar application for a balanced pair line using the three electrode triarc type spark gap. Circuit 3) utilizes series resistances to limit power following in AC power applications. Several spark gap-resistor combinations may be paralleled to increase the system surge current capability without increasing the surge caused by Ohms Law voltage drop developed across the circuit.

A high frequency communication circuit protection system is illustrated in circuit 4. This circuit, similar to circuit 1, has low capacitance diodes placed in series with the avalanche diodes to reduce circuit capacitance to less than 200 pF.

Reynolds offers a variety of hybrid protection systems designed and tested to individual customer applications. This design task often includes the mechanical packaging interface between the transient source environment and the userís equipment. Several protection systems manufactured and designed by Reynolds are illustrated on the following pages.

DESCRIPTION:
Designed to provide lightning and EMP (electromagnetic pulse) protection for a mobile communication shelter, this input panel features replaceable modules containing hybrid spark gap protection circuits.

Incoming communication circuits route through the panel, which is mounted on the side of a shelter. Modules containing the individual protection circuits are designed for the electrical characteristics of the incoming lines. Each module plugs into a receptacle in the panel that is then wired through connectors to the shelters electronic circuit loads. Field wire carrying data and communication information from remote sources is rapidly terminated at the shelter with push to insert receptacles located on the external face of each module.

This panel illustrates the combination of transient protection circuits and specialized packaging design to provide an over-voltage protection system suitable for commercial and military applications. Reynolds offers this capability for a comprehensive solution for all communication and power transient protection requirements.

This high-density hybrid protection package is designed for card mounting of multiple circuit boards to provide induced lightning surge protection. A typical application is for a communications facility having many shielded input line pairs. Provisions are included for surge diversion from non-grounded cable shields (screens). Each protection package contains both input and output connectors permitting rapid field replacement. Induced surges to 2500 amps are possible without system damage. Output lines contain avalanche diodes to limit surge caused output voltages to less than 50 volts.

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