D0920 LITTELFUSE | Alldatasheet

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Technical content

Protection Relays and Controls © 2016 Littelfuse Protection Relays & Controls D0920 ARC DETECTION UNIT Arc Detection Unit Arc-Flash Monitoring Rev: 4-C-071316 Based on Manual Rev: 0-D-070616 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 61 mm (2.4”) Certification CE, CCC ORDERING NUMBER DESCRIPTION D0920.0060

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

trip, slide switch instead of key switch, electronic reset button instead of mechanical reset button, CCC approved

Ordering Information

Compact module Fits into wide range of Arc-Flash applications T rip time <1 ms Limits Arc-Flash damage and risk of injury T wo 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 mm2 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 Unit For tripping one circuit breaker with multiple D0920 Relays Accessories A Install sensors in line of sight to possible arc faults.