Lightning memory

OLM-2, OLM-2S

OTOWA Lightning memory can detect and record above certain lightning current that flows through earth wire and can indicate the number and current level, date, time of them.

Features

・Records and displays the level of surge current entering the earth wire date time
・This is useful for verifying the effectiveness of SPD (surge arresters) and for maintenance
・Compact and lightweight
・Easy to install
・EU RoHS Compliant with regulated substances

Type

OLM-2
OLM-2S

Specification

Type		OLM-2	OLM-2S	OLM-2W (coming soon)
Power source		LR03 (AAA) type Alkali battery 2 pieces
Range of record surge current (8/20μs)		100/1000A		500/5000A
Max. current		25kA (8/20μs)		100kA (10/350μs)
Recorded data		Range of Surge current, year, month, day, time
Recording medium		Internal memory
Number of recording data		99
Signal contact		-	operating time for 1s. (Open collector output)	-
Capacity of signal contact output		-	The Maximum operating voltage: DC80V The Maximum operating current: 50mA	-
Installing method		Cable tie / M4 screw	Cable tie / M4 screw	Cable tie
Operating temperature	Measurement	-20℃ ～ +50℃
Operating temperature	Indication	0℃ ～ +50℃

Purpose

A surge detector to detect lightning surges.
Records and tables the size of the surge and the time of detection.
With surge counter function

Basic Circuit Diagram

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