DONATI SOLLEVAMENTI S.r.l. - Via Quasimodo,17 - 20025 Legnano (MI) - Tel. 0331 14811 - E: [email protected]
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2.3 Technical specifications and operating conditions
2.3.1 Applicable norms and regulations
•
The following norms and technical principles have also been taken into consideration in the design and
manufacturing of
“DGT”
series endcarriges for bridge cranes
:
•
EN ISO 12100/2010 “Fundamental concepts on general engineering principles”
•
EN 60529/97 “Degrees of protection for casings (IP Codes)”
•
ISO 4301-1/88 “Classifications for lifting equipment”
•
ISO 8306/85 “Tolerances for travelling girders”
•
FEM 1.001/98 “Calculations for lifting equipment”
•
FEM 9.511/86 “Classifications for mechanisms”
•
FEM 9.683/95 “Options for lifting and traversing motors”
•
FEM 9.755/93 “Safety work periods”
2.3.2 Electrical power – Protection and insulation of electrical parts
•
The motors on the
Drive
Units
are designed to be powered through three-phase alternating current: 400 V -
50Hz. in accordance with IEC 38-1.
•
Drive
Unit
motors: Protection IP55 (motor) - IP23 (brake); class “F” insulation.
•
Limit switch: minimum protection IP65; max. Insulation voltage 500 V
2.3.3 Surface finish
•
Finishing on the bodywork on the
“DGT”
series Drive units and Endcarriages
and protection from
atmospheric and environmental agents (dust, gas, etc.) is guaranteed by a special paintwork finish which applies
a chrome and lead free primer coat of 40 microns in thickness of yellow enamel RAL 1002; surfaces are
previously prepared with SA 2 degree metallic sanding in accordance with SVENSK STANDARD SIS 055900.
The finish is oven dried for 40 min. at a temperature of 60-80°C.
•
The special waterproof paintwork finish adopted for electro-mechanical parts (swinging reducer and self-braking
drive motor), obtained using an electrostatic process and the complete sealing of parts, guarantees their
inalterability over time and constant high performance characteristics, even in particularly hostile environments.
2.3.4 Environmental conditions for standard usage
•
Operating temperature: minimum - 10° C; m 40°C
•
Maximum relative humidity: 80% - Maximum altitude 1000 m above sea level.
•
Standard
Drive units and Endcarriages for bridge cranes
must be installed in a well aerated working
environment, free of corrosive vapours (acidic vapours, saline mists, etc.), and are designed to operate in a
covered environment, protected from atmospheric elements.
It is forbidden to operate the “DGT” series Drive units and Endcarriages in a potentially
explosive environment, i.e. in which the use of anti-explosive components is mandatory.
2.3.5 Noise emissions - Vibrations
•
Noise emission levels emanating from the
Drive units and Endcarriages
during traversing operations, whether
empty or fully loaded, are in all cases inferior to a value of 80 dB (A), as measured at a distance of 1 m and 1.6
m from the ground.
•
The incidence of environmental characteristics such as the transmission of sound through metallic structures,
reflection caused by combined machinery and surrounding walls, are not taken into consideration in the value
indicated.
•
Vibrations produced by the
Drive units and Endcarriages
during traversing operations are not considered
dangerous for the health and wellbeing of personnel operating the lifting equipment on which the units are
installed.
•
Excessive vibrations can be caused by a malfunction, which must be immediately pointed out and eliminated so
as to safeguard the reliability of components.
