Ref ID : ADR233B/IM/SGI
Rev No. : 05
ADR233B
TECHNICAL SPECIFICATIONS FOR SAFETY
The recommended maximum rating of the external protective fuse for equipments is 8A, high
rupture capacity (HRC) Red Spot type NIT, or TIA, or equivalent, unless otherwise stated in
the technical data section of the equipment documentation. The protective fuse should be
located as close to the unit as possible.
DANGER - CTs must NOT be fused since open circuiting them may produce lethal hazardous
voltages 7.2 Protective Class
Protective Class
IEC 60255-27: 2005
EN 60255-27: 2005
Class I (unless otherwise specified in the equipment documentation).
This equipment requires a protective conductor (earth) connection to
ensure user safety.
Installation Category
IEC 60255-27.2005
Category III
(Overvoltage Category III)
: At 2 kV, 50Hz between all terminals connected together and
earth for 1 minute Distribution level, fixed installation.
Equipment in this category is qualification tested at 5KV peak,
1.2/50µs, 500Ω, 0.5J, between all supply circuits and earth and
also between independent circuits
Environment
The equipment is intended for indoor installation and use only. If it is required for use in an
outdoor environment then it must be mounted in a specific cabinet or housing which will enable
it to meet the requirements of IEC 60529 with the classification of degree of protection IP52
(dust and splashing water protected).
Pollution Degree 2 Compliance is demonstrated by reference to safety standards.
Altitude Operation up to 2000m
IEC 60255-27:2005
EN 60255-27: 2005
CE MARKING
Compliance demonstrated by reference to safety standards
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