Symmetrix DMX-3 power requirements
291
Planning and Installation
Regulatory
compliance
The Symmetrix systems meet regulatory requirements as referenced
by the following UL/IEC/EN 60950 3d Edition:
5.1.7 Equipment with touch (leakage) current exceeding 3.5 mA
For Stationary Permanently Connected Equipment, or Stationary
Pluggable Equipment Type B, having a main protective earthing
terminal, if the Touch (Leakage) Current measurements exceed 3.5 mA
r.m.s., all of the following conditions apply:
• The r.m.s. Protective Conductor Current shall not exceed
five percent of the input current per line under normal
operating conditions. If the load is unbalanced, the largest of
the three-line (phase) currents shall be used for this
calculation.
To measure the Protective Conductor Current, the procedure
for measuring Touch Current is used, but the measuring
instrument is replaced by an ammeter of negligible
impedance.
• The cross-sectional area of the Protective Bonding Conductor
shall not be less than 1.0 mm squared in the path of high
Protective Conductor Current.
• A label with similar wording shall be affixed adjacent to the
equipment AC MAINS SUPPLY connection:
HIGH LEAKAGE CURRENT
Earth connection essential
before connecting supply.
The Symmetrix DMX-3 is a Stationary Pluggable Type B system, and
has been extensively tested and certified to meet the above standard,
including the application of the following warning labels in English
and French:
â—† EMC warning label, part number 046-002-420 is located inside the
rear of the Symmetrix DMX-3 system bay.
â—† EMC warning label, part number 046-002-593 is located inside the
rear of the Symmetrix DMX-3 storage bay.
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