Page 165 - Sace Emax 2 Manual for design engineers

ABB | SACE Emax 2
3 - Environmental conditions

Installation environment Install the circuit-breaker in a dry environment, without dust or corrosive acids, and so that it is not subject
to shock or vibration.
If this is not possible, mount the circuit-breaker in a compartment protecting it adequately.
For the dimensions to be considered for installation, see the chapter "4 - Installation" on page 165 where the
references for following information can be found:
• minimum installation volumes of the circuit-breakers and derived versions in a cell
• overall dimensions of the circuit-breakers and the fixed parts
• drilling of mounting holes
• drilling of the cell door

Temperatures of the installation The mechanical and electrical characteristics are guaranteed between -25 ° C and +70 ° C, -13 °F e +158 °F.
environment

Particular weather conditions The circuit breaker is designed to operate in particularly difficult industrial environments.
It was tested according to:
• IEC 60068-2-1: endurance at low temperatures
• IEC 60068-2-2: hot dry climate
• IEC 60068-2-30: hot humid climate
• IEC 60068-2-52 severity 2: saline mist atmosphere
• IEC 60947 (pollution level ≤ 3)
• IEC60721-3-6 class 6C3
• IEC60721-3-3 class 3C2
NOTE: the circuit-breaker is suitable for installation in environments with saline concentrations
no higher than 10 mg/m3.

Dusty environments It is recommended to install the circuit breaker in suitably ventilated switchgear where penetration by dust is
minimized.
In case of dusty environments (dust> 1 mg/m3) second level maintenance procedures must be followed.

Vibration The circuit-breaker is insensitive to mechanical or electromagnetic vibrations that meet the following
standards:
• IEC 60068-2-6 a) From 1 to 13 Hz with movement equal to 1 mm - 0.04 in b) From 13 to 100 Hz with
constant acceleration equal to 0.7 g - 0.025 lbs
• Shipping Registers' specifications: RINA, BV, GL, ABS, LRs, DNV

163 | © 2020 ABB | 1SDH001330R1002 - ECN000134959 - Rev. A Mechanical characteristics | 3 - Environmental conditions