SURGE Series: Lightning and Transient Protectors

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The SURGE Series of transient protectors consist of multi-stage devices which include three terminal gas discharge tubes, thyristor crowbar devices, and coordinating resistors.

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Overview

Wiring, particularly long horizontal wiring, can convert transient electrical fields to destructive voltages at sensors and data logger terminals. Transient protection equipment can be used to divert these transients to ground, increasing installed system reliability.

The SURGE Series of transient protectors consist of multi-stage devices which includes three terminal gas discharge tubes, thyristor crowbar devices, and coordinating resistors. They are capable of protecting against high-speed (100 volts per microsecond) transients of up to 20,000 amps, letting only 77 volts through before clamping to 4 volts. The protector is housed in a NEMA-4X enclosure or in a compact T35 DIN-rail housing with screw-terminal input/output and ground connection through the DIN rail, simplifying connections, and facilitating good signal practices: i.e. labeling, shielding, and routing outside cables away from protected lines.

In normal operation, the protector appears as a low resistor in series with each wire, typically having no effect on operation. During a transient, the 4 signal lines and up to 2 shield lines are clamped to ground. Once the transient is over, the device self-resets, allowing normal operation to resume. The protector is suitable for use with most devices, including vibrating wire sensors, data loggers, 4-20 mA transmitters, and other DC-powered sensors.


SURGE Series: Lightning and Transient Protector Specifications

ITEM SPECIFICATION
Conductors Protected SURGE 4D: 4+2 shields

SURGE 4N: 4+1 shield

SURGE 16N: 16+4 shield

Maximum transient current per line (1 event, 8/20 µs) 20,000 Amps
Minimum conduction threshold voltage 58 Volts
Peak pass-through voltage (common or normal mode) 77 Volts
Output clamp voltage 4 Volts
Series resistance per line 1.6 Ohms
Maximum leakage current 5 Microamps
Hold current 150 Milliamps
Maximum AC current (1 line cycle) 30 Amps RMS
Maximum continuous current 2 Amps

Lightning and Transient Protectors are commonly used to divert transient electrical fields in wiring to the ground; increasing installed system reliability.

SURGE Series: Lightning + Transient Protectors Ordering Info

ITEM PART #
SURGE 4D: 4-Wire and Shield Transient Protector for DIN rail mounting ELLP4501
SURGE 4N: 4-Wire and Shield Transient Protector in NEMA-4X enclosure ELLP4500
SURGE 16N: 16-Wire and Shield Transient Protector in NEMA-4X enclosure ELLP4504
5/8” Copper Ground Rod – 1.5 m length ELGK4600
5/8” Copper Ground Rod – 3 m length ELGK4601

 

File Name

SURGE Series Lightning and Transient Protector Installation Manual

Resource Type

Manual
Language Version Download
English ELM0100A

File Name

SURGE Series Lightning Transient Protectors

Resource Type

Brochure
Language Version Download
English ELB0036E

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