Table 20 Environmental acclimation
Transit/storage environment Hours
required
before
applying
power
(minimum)
Condition (°F) (°C) %RH
Nominal 68–72 20–22 <30% 0–1
Cool/Damp <68 <20 >30% 4
Cold/Dry <68 <20 <30% 4
Hot/Dry 72–149 22–65 <30% 4
Hot/Humid 72–149 22–65 30–45% 4
72–149 22–65 45–60% 8
72–149 22–65 60–90% 16
Note: The environment of system must have temperature and humidity values that
prevent condensation from occurring on any system part. Altitude and
atmospheric pressure specifications are referenced to a standard day at 58.7°F
(14.8°C). Maximum wet bulb temperature is 82°F (28°C).
Regulatory compliance
This section provides an overview of regulatory compliance requirements.
DLm meets regulatory requirements as referenced by the following UL/IEC/EN 60950
third 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., following conditions apply:
l
The r.m.s. Protective Conductor Current not exceeds five percent of the input
current per line under normal operating conditions. If the load is unbalanced, the
largest of the single-phase currents shall be used for this calculation.
To measure the Protective Conductor Current, the procedure for measuring
Touch Current is used, but an ammeter of negligible impedance replaces the
measuring instrument.
l
The cross-sectional area of the Protective Bonding Conductor is not less than 1.0
mm squared in the path of high Protective Conductor Current.
l
A label with wording similar to the following shall be affixed next to the equipment
AC MAINS SUPPLY connection:
HIGH LEAKAGE CURRENT
Earth connection essential
Before connecting supply
The DLm configurations are Stationary Pluggable Type B systems, and the application
of the warning label, Dell EMC P/N 046-000-309, are in English and French. The label
location for the DLm configuration is on the inside the front door.
Environmental specifications and regulatory compliance
Disk Library for mainframe Physical Planning Guide for DLm8500 43
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