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Martindale ET4000 / ET4500
Appendix B - Measurement categories
The unit can be used safely on CAT IV installations where the phase to earth voltage
is ≤300V and on CAT III installations where the phase to earth voltage is ≤600V.
Such a unit could safely be connected between phases on CAT IV installations of a
3-phase distribution system where the phase to phase voltage is 400V because the
phase to earth voltage is 230V.
Martindale Electric Company Limited
Metrohm House, Penfold Trading Estate, Imperial Way, Watford WD24 4YY, UK
Tel: +44 (0)1923 441717 Fax: +44 (0)1923 446900
E-mail: sales@martindale-electric.co.uk
Website: www.martindale-electric.co.uk
© 2015 Martindale Electric Company Ltd.
Registered in England No. 3387451.
E&OE. LIT4000F Document Rev1
84
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