MR MESSKO MSAFE, Operating Instructions Manual

Page: 43 / 60

10 Technical data
43 7232312/00 EN
Basic materials
Housing / terminal box Cast aluminum, RAL 7033 or 7038 (similar to
ANSI 70 light gray), powder-coated; seawater-re-
sistant version (offshore) upon request
Inspection window Hardened glass with UV filter
Specifications
Setup Indoors and outdoors, tropic-proof
Ambient air temperature -50°C…+80°C
Storage temperature -40°C…+80°C
Operating temperature -40°C…+115°C
Insulating fluid temperature
(IEC 60296) -25°C…+105°C (up to +115°C in transformer
overload operation)
Temperature ranges for alternative insulating flu-
ids on request
Degree of protection IP55 in accordance with DIN EN 60 529
Weight including terminal box Approx. 7 kg
Nominal diameter of the pipe,
flange version DN25, DN50, DN80 or G 1½“ thread connection
Flap valve triggering pressure
(mineral insulating oil) DN25: 1 m/s, 1.2 m/s, 1.3 m/s, 1.5 m/s, 2 m/s or
2.5 m/s (each ±15%)
DN50: 1 m/s, 1.3 m/s, 1.5 m/s or 2 m/s (each
±15%)
DN80: 1 m/s, 1.3 m/s, 1.5 m/s, 2 m/s or 2.5 m/s
(each ±15%)
3 m/s for DN25, DN50, DN80 on request
Overvoltage category III; external protection: Miniature circuit breaker
max. 16 A, C characteristic
Dry-reed magnetic switches
Number and type Max. 4 N/C contacts, N/O contacts and/or
changeover contacts
Floating; 2 contacts per function
Nominal voltage 24…250 V AC/DC