Page 144 - Sace Emax 2 Catalogue

7/10 SACE EMA X 2 LOW VOLTAGE AIR CIRCUIT-BRE AKERS

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Installation environment

— In addition, ABB provides instructions for the use
of circuit breakers in nonstandard environments,
SACE Emax 2 circuit breakers as for example personalized maintenance pro-
have been designed and tested in gram or installation solutions aimed at increasing
performances and extending the lifecycle of the
accordance with major circuit breaker.
international Standards to
manage the electrical plant.
Temperature
The installation requirements prescribed by the SACE Emax 2 circuit breakers can operate in the
international Standards are listed below. following environmental conditions:
Temperature (°C)
Operating Active Display Storage
Emax 2 with Ekip DIP -25°C … +70°C - -40°C … +70°C
Emax 2 with Ekip Touch -25°C … +70°C -20°C … +70°C -30°C … +70°C
Emax 2 with LCD -25°C … +70°C -25°C … +70°C -40°C … +70°C
Emax 2 swith-disconnectors -25°C … +70°C - -40°C … +70°C

Environmental conditions Altitude
The devices can be installed in industrial environ- SACE Emax 2 air circuit breakers do not undergo
ments with pollution level 3, IEC60947. SACE changes in rated performance up to 2000 metres.
Emax 2 circuit breakers also comply with: Beyond this altitude, the properties of the atmo-
• IEC60721-3-6 class 6C3 sphere in terms of composition, dielectric capaci-
• IEC60721-3-3 class 3C2 tance, cooling power and pressure can vary and,
therefore, the performance of the circuit breakers
is subject to derating, which can be measured by
means of the variation in maximum rated service
voltage and rated uninterrupted current.

Altitude [m] 2000 3000 4000 5000
Rated service voltage - Ue Versions 690V [V] 690 624 544 477
Rated current [% In] 100 98 93 90