Burkert Type 6027 - Manual (Page 8)

8
Application conditions
4.2. Warranty
The warranty is only valid if the device is used as intended in accordance
with the specified application conditions.
4.3. Approval
The EC Type Examination Certificate PTB 07 ATEX 2063 X was
issued by the
PTB (Physikalisch Technische Bundesanstalt)
Bundesallee 100
38116 Braunschweig (Germany)
which also audits production (CE0102).
4.4. Information on the Internet
The operating instructions and data sheets for Bürkert products can
be found on the Internet at:
www.burkert.com
5. APPLICATION CONDITIONS
5.1. Special conditions
5.1.1. Short-circuit protection
To protect each solenoid against short-circuit, a fuse (max. 3 x I
b
in
accordance with IEC 60127-2-1), corresponding to the rated current,
or a motor protection switch with short-circuit and thermal quick release
(set to rated current) must be connected upstream.
• At very low rated currents of the solenoid the fuse with the lowest
current value is adequate according to the stated IEC standard.
This fuse may be housed in the associated supply unit or must be
connected separately upstream.
• The fuse rated voltage must be the same or higher than the indicated
nominal voltage of the solenoid.
• The interruption rating of the fuse link must be the same or higher than
the maximum short-circuit current to be accepted at the installation
site (usually 1500 A).
Example 2/2-way
solenoid valve:
Solenoid coil AC19
Valve body
The nominal value of
the fuse is indicated
on the solenoid
Fuse
F . , . . A
Fig. 1 : Example of coil AC19 as part of a closed system.
english
07 ATEX 2063 X