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Manufacturer of Measurement Instrument―Signal SPDOperation Display / Alarm Contact☆★☆NEW PRODUCT☆★☆
2010 Year On Sales

DA2 Series

Signal SPD can be Preventive Maintenance■UseJIS C 5381-21: 2004 Category

This Signal SPD can prevent damage to electronics instrument by thelightning surge invading to instrument signal line. They are 5 types of modelaccording to different signal and all instruments have preventive maintenancefunction.

Compliance with C1, C2, D1■Features* JIS C 5381-21:2004 category, compliance with C1, C2, D1.
* Impulse withstand: 20kA (8/20μs) High withstand: 1kA (10/350μs).
* Preventive maintenance is possible, lighting-induced surge (earth): 10kA
(8/20μs) ±15%. Protection function will continue if detection surge less than20kA (8/20μs)《Operation display change to White》《Alarm contact ON: Continuous》* Monitoring SPD state is possible from a long distance by alarm contact.
* Laborsaving to SPD maintenance by operation display and alarm contact.
* Replacing the main product become easy by plug-in structure, line will notopen even pullout the main body from terminal block.
* DIN Rail mounting and wall mounting.

OperationDisplay

DA2-TP* Current rating (Max. load current) is 200mA.

(23.5x113x78mm)■Specification & Performance
Name of ProductSignal SPD (2-wire)Type Name

DA2-TP
1Signal SPD (3-wire)

DA2-HT

DA2-RH

DA2-RT

DA2-GT

Thermocouple

Thermal Resistance

Potentionmeter

Pulse

kind of Signal

DC Signal *Max. Continuous Use Voltage
Uc

DC30V

DC7.5V

DC3V

DC7.5V

DC14V

73V or less

23V or less

23V or less

23V or less

51V or less

650V or less

650V or less

650V or less

650V or less

650V or less

5μA or less（at DC30V）

5μA or less(at DC7.5V)

2μA or less(at DC3V)

5μA or less(at DC7.5V)

5μA or less(at DC14V)

Voltage Protection Level LineUp(5kA 8/20μs）
EarthLeakage Current

Line

Impulse Durability

Earth

20kA(8/20μs) ×1-time、10kA(8/20μs）×5-time
1kA(10/350μs）×1-time

Current Rating(Max. load current)

200mA

Series Resistance (1 line)

10Ω±5%
Detecting point

Detection forLightning-induced Surge10Ω±5%
Between L3-T3
Less than 0.1Ω

10kA (8/20μs), ±15% (between earth)

Operation Display Before: Black ; After: White (continuous)
Alarm Contact*110Ω±0.3%(30ppm/℃)

Before:OFF ; After:ON (continuous), Contact Capacity:AC/DC125V, 0.5A (resistance load), DC Signal: DC30V or less use, like DC4～20mA, DC1～5V etc.

Signal SPD (Operation Display / Alarm Contact)■Block Diagram■Terminal
Arrangement

DA2 Series■Connection Diagram● DA2-TP、DA2-HT● DA2-RH、DA2-RT(1) Height:15mm for DIN rail mounting■Compare Terminology between JIS (DA2 Series) & (DA Series)
DA2 Series

DA Series● DA2-GT

SPD (Surge Protective Device)

ArresterMax. continues use voltage Uc

Max. line voltage

Voltage protection level

Clamping voltage

Leakage current *2

Leakage current

Impulse withstandWithstand discharge

Rated current (Max. load current)

Max. load current

Series resistanceInternal series resistance (2-line)

Category―Use―

Spark over voltage

DC Signal

DA2-TP―

Response Time

Thermocouple

DA2-HT

Thermal Resistance

DA2-RH

Potentiometer

DA2-RT

Pulse

DA2-GT*2, JIS C 5381-21, use insulation resistance meter and applied max. continues use
voltage Uc between terminal SPD to measure the current and resistance value.
Normally insulation resistance test is difficult as high voltage but leakage current test
is same like before as above chart.

Type Name■Purchase Specifications(1) Type Name
(2) Quantity
Defensive function will be recoverable when the main body only is replaced after this SPD operated. But, please replace both main
body and terminal block if lightning surge invading and beyond the impulse durability, main body and connecting part of terminal
block (card-edge connector) will leftover the discharge traces by lightning surge current, it may cause damage to terminal block.

■Application consideration
1) Please pull SPD main body out of terminal block or remove SDP grounding wire during the withstand voltage test of distribution board.
2) Please insertion the body to terminal block less than 50 times.

CAUTION！ 安全に関するご注意* To ensure safety, connections are to be performed by an electrical engineer qualified in wiring.
* Please check the connection diagrams carefully before performing connections.
* Do not work with live wires, there is a risk of electric shock, which may lead to malfunction, fire or burnout.

DAIICHI ELECTRONICS CO., LTD
Hard Office:11-13, Hitotsuya 1-chome, Adachi-ku, Tokyo,
121-8639 Japan
Tel: +81-3-3885-2411
Fax:+81-3-3858-3966

http://www.daiichi-ele.co.jp

No.0903-0