Quantcast Figure 1-38. Typical Operating Curve for Two Series of Gas-Filled Spark Gap Arresters with Nonlinear Series Resistor

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MIL-HDBK-419A
Figure 1-38. Typical Operating Curve for Two Series of Gas-Filled Spark Gap
Arresters with Nonlinear Series Resistor
(3) Summary.  In summary, the gas-filled spark gap is capable of discharging high-amplitude
transients, but has a relatively slow response time and a relatively high discharge voltage. Follow current
(10 to 80 amperes typical) occurs, but normally presents no significant problems. Figure 1-38 depicts typical
operating curves for two series of gas-filled spark gap arresters with a series-connected silicon carbide resistor.
b.
ZNR and MOV type arresters. The ZNR type arresters have several desirable characteristics. Other
types of MOV arresters are currently under development that have voltage-current characteristics similar to
the ZNR type. The ZNR type arresters have a relatively fast turn-on time (50 nanoseconds or less), low turn-on
voltage, relatively low clamping voltage, and various levels of current dissipation capability since the ZNR
types are available in different energy level packages.  Table 1-13 lists related characteristics for ZNR
available in one type of energy level package, and Table 1-14 lists related characteristics for a high-energy
level package.
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