Littelfuse D0920 Series User Manual download pdf

Protection Relays & Controls

D0920 ARC DETECTION UNIT

Arc Detection Unit

Arc-Flash Monitoring

Rev: 4-A-021014

Based on Manual Rev: 0-B-011014

Installation Diagram

Description

The D0920 Arc-Flash relay provides a simple and cost

effective solution for Arc-Flash monitoring. Two light sensors

can be connected directly to one relay.

Light Sensors react to light and have a 180º detection zone.

Sensors are supplied with 10 or 15 m of cable. 1-2 sensors

are recommended per cubicle or drawer.

Speciﬁcations

Supply Voltage 230 V AC

+15,-30%

Thyristor Output 325 V DC from charged capacitor, nominal energy 3.5 J

Sensitivity Adjustable 2 - 24 klux

Number of Sensors Max. 2

Response Time Less than 1 ms

Power Consumption 3.5 VA

Ambient Temperature –25°C to 70°C

Dimensions H 90 mm (3.5”); W 105 mm (4.1”); D 75 mm (3.0”)

Certiﬁcation CE

ORDERING NUMBER CONTROL POWER

D0920.0010

230 V AC +15, -30%

D0920.0020

230 V AC +15, -30%, remains powered on after trip

Ordering Information

FEATURES BENEFITS

Compact module

Fits into wide range of Arc-Flash applications

Trip time <1 ms

Limits Arc-Flash damage and risk of injury

Two optical sensor

cable lengths

Point sensors with 10 or 15 m of cable

Inputs for two

sensors

Single Arc-Flash relay can monitor 2 sensors

Adjustable light

sensitivity

Allows operation in bright environments and maximum

sensitivity in dark environments

Service mode

Allows relay and sensor test without tripping system

Features & Beneﬁts

ACCESSORIES REQUIREMENT

A0033.0010 Detector cable

2 x 0.25 mm

w/screen. 100 m

Optional

A0220.0010 Arc Detector V-Type; 10 m cable

Required: At least one

sensor per monitored zone

A0220.0020 Arc Detector V-Type; 15 m cable

PGA-1100/D1100 Diode Logic Unit

Optional

A0220 Light Sensors

Line-of-sight light sensor detects an arc as small

as 3 kA within a 2-m half-sphere. Available with

10 or 15 m cable.

PGA-1100/ D1100 Diode Logic

For tripping one circuit breaker with multiple

D0920 Relays

Accessories

Install sensors in line

of sight to possible arc faults.

Littelfuse D0920 Series User Manual

Browse online or download User Manual for Hardware Littelfuse D0920 Series. Littelfuse D0920 Series User Manual

Summary of Contents

Comments to this Manuals

Littelfuse D0920 Series User Manual

Browse online or download User Manual for Hardware Littelfuse D0920 Series. Littelfuse D0920 Series User Manual

Summary of Contents

Comments to this Manuals

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