Define Instruments OVP-100 Operating Manual

OVP -100

Over Voltage Protection

This over voltage protection unit is characterised
by its high level of protection, concentrated in
a compact space. It is suitable for installing in the
narrowest of places, making it ideal for automated
process industrial and building service systems.

Two Stage Protection:

› Gas discharge tubes provide the first stage

› Transient voltage supressors provide the second stage

Speci cations

Gas discharge tubes 8x20μs: 5000A. 10x1000μs: 10A. DC
spark voltage 60~90V at 100V/s. Impulse spark over voltage
<600V at 1kV/μs.

Transient voltage suppressors 10x1000μs: 600W. Response
time <5ns from 0~41V. Stand o voltage 33V typical.

Operating temperature 0 to 60°C (32 to 140°F)

Storage temperature -20 to 80°C (-4 to 176°F)

Operating humidity 5–85% RH max

EMC compliance Emissions: EN55022-A. Immunity: EN

50082-1 (<1% e ect FSO typical).

Leakage current 10μA at 24V DC

Casing 79 x 20 x 70mm (3.11 x 0.79 x 2.76") 35mm DIN rail

1

Wiring

2

1

KEY

EARTH

1

− OUTPUT

5

3

4

3750V ISOLATION BARRIER

5

6

2

3

4

EARTH

− INPUT

+ INPUT

+ OUTPUT

6

EARTH

7

EARTH

8

NOTE

USE INSTRUMENTATION CABLE
WITH SCREEN EARTH AT ONE
END ONLY

78

MIN 300MM DISTANCE
REQUIRED BETWEEN SIGNAL
AND POWER CABLES

Cables

Austral Cable B5102ES standard for 2-wire current loop

Austral Cable B5103ES standard for 3-wire transmitters & RTDs

De ne Instruments

New Zealand (Head O ce) [phone]

United States (Dallas, TX) [phone]

de neinstruments.co.nz

de neinstruments.com

South Africa (JHB) 087 945 2700

2

Copyright © De ne Instruments

de neinstruments.co.za

OVP -100-MAN-15V03 (1009)