P4802ACMC datasheet(156/212 Pages) TECCOR

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UL 497C

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SIDACtor® Data Book and Design Guide

UL 497C

UL 497C requirements cover protectors for use on coaxial cable circuits. This standard

covers construction and performance requirements.

UL 497C Construction and Performance Requirements

The “Construction” section covers the following requirements:

• General

• Corrosion Protection

• Field-wiring Connections

• Components

• Spacing

• Enclosures

The “Performance” section covers the following requirements:

• General

• I2t Limiting

• Abnormal Sustained Current

• Component Temperature Test

• Breakdown Voltage Measurement

• Impulse Spark-over Voltage Measurement

• Limited Short-circuit Test

• High Current Ground Path Test

• Cable Shield Fuse Test

• Endurance Conditioning Test

• Induced Low Current Test

• Distortion Test

• Flame Test

• Impact Test (Polymeric Enclosures)

• Jarring Test

• Water Spray Test

• Leakage Current Test

• Dielectric Voltage-withstand Test

• Ultraviolet Light and Water Exposure

• Tensile Strength and Elongation Tests

• Air Oven Aging

• Ozone Exposure

Performance Requirements Specific to SIDACtor Devices

1. Strike Voltage Breakdown Test — Protectors are required to break down within ±25% of

the manufacturer’s specified breakdown range but no higher than 750 V at

£ 2 kV/s rise

time.

2. Endurance Conditioning — Protectors are subjected to 500 impulse cycles. Each cycle is

a 1000 V peak, 10 A, 10x1000 µs pulse. Pulses are applied in one polarity at 10-second

intervals and then repeated in the opposite polarity. Then, 100 cycles of 1000 V peak,

100 A, 10x1000 µs pulse are applied to three new protectors. Finally, two cycles of

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