1. Meter Base Surge Arrestor
| Applications
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| 120 VAC-240 VAC Surge Arrester for residential and light commercial / industrial usage. Installed at wattmeter, safely clamps and dissipates lightning induced AC line high voltage current impulses going to a residence, apartment or light commercial / industrial building. Also protects against AC line temporary overvoltage conditions. |
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| Features |
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- 40,000 amp peak capability, each 120 VAC leg
- 210 VAC, continuous 5 minute, temporary overvoltage clamping capacity.
- Lowest, reliable voltage clamping level.
- Safety fusing, both 120 VAC legs
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- Patented LED "unit good" indicators, both 120 VAC legs
- Fire-proof and explosion-proof polycarbonate glass-fiber reinforced enclosure with matching mounting connector
- Sealed unit except for mounting connector wiring opening
- For less inductance, 10# AWG tinned wires
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| Maximum Clamping Voltage @ 40,000 amperes, each 120 VAC leg
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840 Volts DC |
| Starting Clamping Voltage Level @ 1ma, each 120 VAC leg |
240 Volts AC |
| Accelerated Life Test: 13,000 volts, 1.2/50 µsec. Open circuit, 5,500 amperes, 8/20 µsec. Short circuit, 100 surge cycles, 6 seconds apart. No failures or arching allowed. |
Results: Surge arresters still in excellent working condition at end of test |
| Temporary Overvoltage Test: Continuous, 5 minute, maximum line voltage without thermal runaway, must be 185 VAC or greater |
Result: Passed at 240 Volts DC |
| End of Life Failure Mode Test: While in overvoltage induced thermal runaway, apply 7,000 amp @ 120 VAC. Surge arrester must fail without faulting the AC line. No arching allowed. |
Result: Passed |
| Salt-Fog Corrosion Resistance |
Very Good |
| UV Resistance |
Good UV stability in tropical conditions |
2. Telephone Line Surge Arrestor Specs
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- Surge clamp peak voltage with 1,000 volt unipolar 8/20 µsec current impulse with 3,000 amp source capability
- Metallic (tip to ring) = 310 volts average
- Longitudinal = 310 volts average
- Series Loop resistance = 80 ohms
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3. Coax Line Surge Arrestor Specs
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- 8/20 µsec single impulse withstand capability (20,000 amps)
- Protects from line to ground
- Operating Frequency = 0 - 1 GHz
- Response Time <5 nano seconds
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