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SPK Electronics Co., Ltd. has 30 years of excellent experience in manufacturing. SPK is also the sole distributor of Sarantel Inc (UK) world patented Geohelix GPS Antenna products in Taiwan/China/Hong Kong and sales channel of Epson Toyocom for frequency controlled products. Our wide array of frequency controlled products encompass crystal , Oscillator , TCXO, VCXO, VCO, OCXO, Saw filters, and resonators. SPK products enable in GPS, Bluetooth, DVB-T, TV Field, such as Navigator, PND, E911 phone, Pet Finder, Handheld device, Notebook, MP3, MP4, GPS/GSM/GPRS/CDMA cellular phone, Wireless, mobile communication. We are committed to performance enhancement, continuous quality improvement and customer satisfaction.

Ceramic Gas Tube Surge Arrester Characteristics

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Categories > Main Parts for OEM/ODM > Ceramic Gas Tube Surge Arrester > Ceramic Gas Tube Surge Arrester Characteristics

Ceramic Gas Tube Surge Arrester Characteristics

( Characteristics )

Characteristics

TERMINOLOGY

Unless otherweie specified, the terms used throughout this catalogue are defined as follomia.

DC Sparkover Voltage: With a rate of rise of I00V/s er less, the minimum rising DC voltage that will cause sparkover or breakdown when applied across the terminals of an arrester.

Impulse Sparkover Voltage: The maximum voltage attained by an impulse of designated waveform (100V/

s or 1 kV/

s) applied across the terminals of an arrester brior to the flow of discharge current.

Insulation Resistance: The resistance measured between the terminals of an arrester when the DC
voltage specified in this catalogue is applied at a nominal ambient temperature (25℃) and relative humidity (75%).

Capacitance: The capacitance as measured between the terminals of an arrester.

DC Holdover Voltage: The maximum DC Voltage across the terminals of an arrester under which it
may be expected to clear and return to its high impedance state after the Passage of a surge under specified circuit conditions.

Impulse Life: Tbe minimum number of impulses of a specified waveform and peak current which an arrester will conduct without suffering any of the failure modes as defined in this catalogue.

Impulse Discharge Current: The maximum current of a waveform of 8/20

s that can be applied across the terminals of an arrester without causing the arrester to fail as defined by the failure modes described below.

AC Discharge Current: The RMS current value that an arrester will conduct without suffering any of
the failure modes defined in this catalogue when a current of 50 Hz or 60 Hz is applied for a period of 9 cycles (50 Hz) or 11 cycles (60 Hz).

Failure Judgment: After the Impulse Life Test, Impulse Discharge Current Test and the AC Discharge Current Test, an arrester shall be judged to have failed if any of the following failure modes exists.
Low DC Sparkover Voltage: Less than 50% of the nominal DC Sparkover Voltage
High DC Sparkover Voltage: More tban 150% of ther nominal DO Sparkover Voltage
High Impulse Sparkover Voltage: More than 150% of the nominal 100V/

s Impulse Sparkover Voltage
Insulation Resistance : Less than one Megohm

AQL SAMPLING

The scope of sampling inspections and the maximum admissible number of defects are based on the specifications of MIL-STD-105E single sampling plan for normal inspection General Inspection Level II. The AQL at delivery is 0.65 for the DC Sparkover Voltage and Insulation Resistance of arresters.

REMARKS

Ceramic Gas Tube Arresters contain no radioactive material.

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