420E236中文资料PROTEC数据手册PDF规格书

DESCRIPTION

The 420E series is a two stage transient voltage protector providing primary and secondary protecton against lightning, inductve switching and electrostatc discharge (ESD) transient threats. The frst stage diverts the transient current through the ground terminal return path and the second stage clamps the voltage to a safe level without interrupton of service.

The 420E series is designed to protect 4-20mA analog control loops from differental (line to line) and common mode (line to ground) transients. Terminals 1 and 2 are designated as line pairs for both the line and the equipment side of the protector. A transient voltage suppressor is internally connected across each line pair for differental mode protecton. Each line pair is referenced to ground. This product can also be used on telephone, signal/data lines, security, tming and control interface circuits.

FEATURES

• Compatble with IEC 61000-4-2 (ESD): Air - 15kV, Contact - 8kV

• Compatble with IEC 61000-4-4 (EFT): 40A - 5/50ns

• Compatble with IEC 61000-4-5 (Surge): 95A, 8/20µs, Level 4 (Line Gnd) & 48A, Level 4 (Line-Line)

• Designed for 4-20mA Current Loops

• Automatc Reset - Does Not Interrupt Service

• Permanent Two-Stage Line Pair Protecton

• Common Mode & Differental Mode Protecton

• Subnanosecond Response Time

• Effectve Against Lightning, Inductve Switching and ESD

APPLICATIONS

• Security Alarm Systems

• Industrial Control and Monitoring Systems

• Remote Tech Site Staton

• Process Control Loops