Technical Information Sheet SD1-40N & SD3-40N

Novaris Pty Ltd 72 Browns Road, Kingston, TAS. 7050 ABN: 33 065 427 232 AUSTRALIA TEL: +61 3 6229 7233 Copyright 2001 Novaris Technologies FAX: +61 3 6229 9245 E-mail: sales@novaris.com.au Page 1 of 1

SURGE DIVERTERS 40 & 80 kA MULTIMOV

Product Description Novaris 40kA & 80kA MultiMOV surge diverters provide high-energy surge diversion for single phase and three phase power circuits. The units are designed for mounting at power switchboards and distribution boards where medium to high exposure to surge distrubances is to be expected. In a systems design these surge diverters would be utilised upstream of power line surge filters for effective protection of high sensitivity loads.

Operation The surge diverting elements are based upon 40kA metal oxide varistors (MOVs). Each varistor is connected in circuit with a high-energy fuse. The fuse allows the varistor to absorb maximum energy, but in the event of a varistor failure, the fuse will open circuit to isolate the damaged varistor. Should the diverter be subject to a prolonged overvoltage and the MOVs reach a high temperature a thermal sensor will indicate an alarm condition. All diverters are alarmed with a local LED display indicating the status of each varistor. A common alarm is also provided to indicate the failure of any one element. This takes the form of a clean changeover contact with 4kV isolation to the active circuitry. Both the SD3-40N and SD3-80N provide all mode protection between each phase and neutral, each phase and earth and neutral and earth.

The SD3-80N is a redundant segment unit with 2 segments per phase. One segment failure indicates reduced capacity but does not result in loss of protection. The diverters may be DIN rail mounted with the clips provided. These clips are removable to allow panel mounting. Specifications

Description: Surge diverter Protection modes: All phases to neutral, all phases to earth,

neutral to earth Operating volts: 200 -280V AC L-N Supply Frequency: 40 – 60Hz Recommended fusing:

SD1-40N: 32A HRC SD3-40N: 32A HRC SD3-80N: 63A HRC

Surge rating (8/20us): see below Let-through voltage for 6kV 1.2/50us, 3kA 8/20us pulse: < 800V for all modes Standards Compliance: IEEE C62.41 cat. A, B, C AS1768-1991 cat. A, B, C BS6651-1992 cat. A, B, C CP33-1996 cat. A, B, C IEC 1000-4-5-1995 UL1449 Second Edition Alarms: Each active circuit alarmed with local

display LED. External clean contact alarm Alarm isolation: 4kV to active circuitry Earth leakage: any phase to earth <10uA Environmental: 85°C max ambient. 95% RH Dimensions:

SD1-40N: 200H x 60W x 70D SD3-40N: 200H x 80W x 70D SD3-80N: 200H x 115W x 70D

Conductor size: 16mm2 Weight:

SD1-40N: 900g SD3-40N: 1.1kg SD3-80N: 2kg

Location: Suitable for all TN systems including MEN star or delta configuration.

Other voltages also available.

Options Cat No. Phases MOV Rating 8/20us SD1-40N 1 40kA per mode SD3-40N 3 40kA per mode per phase SD3-80N 3 80kA per mode per phase