NBN EN 50091-2 : 1996

1 Introduction
1.1 Scope
1.2 Object
1.3 Normative references
1.4 Definitions
2 Emission
2.1 General requirements
2.2 Classification of UPS
2.3 General measurement conditions
2.4 Conducted emissions
2.5 Radiated emissions
3 Immunity
3.1 General requirements and performance criteria
3.2 Immunity to electrostatic discharges
3.3 Immunity to radiated electromagnetic fields
3.4 Immunity to fast transients
3.5 Immunity to surges
3.6 Immunity to low frequency signals
Annexes
A (normative) Electromagnetic emission (test methods)
B (informative) Electromagnetic emission - limits
      of magnetic field
C (informative) Electromagnetic emission - limits
      of signal ports
D (normative) Electromagnetic immunity - test methods
E (normative) Attenuation test method - (under
      consideration)
F (informative) Relationship with EU mandate(s)
      directive

Applicable to UPS units or UPS systems which include a number of interconnected UPS and associated control/switchgear to form a single power system, for installation in any operator accessible area or in separated electrical locations which are connected to either industrial or public low voltage supply networks. Takes precedence over all aspects of the generic standards and requires no additional testing.