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05038.R3 11/03

422ELC

DEVICE CHARACTERISTICS

INSTALLATION INSTRUCTIONS

There are five (5) terminals on the LINE SIDE and five (5) terminals on

the EQUIPMENT SIDE of the 422ELC, 4 data lines and one ground.

Both grounds are connected together internally. A single low impedance

ground is sufficient. Incoming data lines are cut or disconnected from

the equipment to insert the 422ELC product. The incoming lines are to

be connected to the line side terminals as the equipment side lines are

connected to the equipment side terminals. The location of the product

should be as close to the equipment as possible. The 422ELC series is

designed with a short circuit failure mode to give maximum protection. A

fuse, fussable link, or circuit breaker is recommended for each data/

signal line on the input side for those that require an open circuit failure

mode.

Caution: A low DC resistance ground may not be a good ground.

Lightning contains a broad spectrum of frequencies up to 1 MHz. A low

impedance path to ground at the transient frequencies is necessary. A

ground strap is recommended or a #6 AWG stranded wire. For wire

lengths over 1.5 meters, there may be some excessive line to earth

potential under severe thunderstorm conditions.

30.0

MAXIMUM

CLAMPING

VOLTAGE

Line - Line

500A, 8/20µs

V

C

±VOLTS

MAXIMUM

CAPACITANCE

@ 0V, 1 MHz

C

pF

MAXIMUM

LINE THRUPUT

RESISTANCE

R

OHMS

12

30.0

125

MAXIMUM

CLAMPING

VOLTAGE

Line - Ground

500A, 8/20µs

V

C

±VOLTS

MAXIMUM

LEAKAGE

CURRENT

@ 12 V

OP

I

D

µA

Peak Operating Line Voltage (V

Operating Line Current (I

Maximum Transient Voltage

Maximum Transient Current

(8/20µs waveform)

Operating & Storage Temperature

Response Time

±12V

200mA

20kV

10kA/Wire

40kA/Protector

-55°C to 100°C

< 1 nanosecond