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ATEX Marking:
0722
0722
= number of the ATEX surveillance Notifying Body (CESI)
I M 2
= group I (mines), category M 2
II 2
= group II (surface), category 2
G
= explosive atmosphere with presence of GAS
Ex e
= "increased safety" protection mode
= gas group
IIC
Gb
= EPL
I
= group I (mines)
Mb
= EPL
DBC
= terminal block series or type
2
= rated cross-section of terminal block
IEC Ex Marking
Ex e
= "increased safety" protection mode
= gas group
IIC
Gb
= EPL
= group I (mines)
I
Mb
= EPL
Terminal
block
DBC.2
Notes:
(*): values calculated from the results of the voltage drop test according to paragraph 8.4.4 of IEC 60947-7-1 Std.
(**): rated voltage values can be subjected to a + 10 % tolerance as listed in Table 1 of IEC 60079-7 Std.
"Easy bridge" PTC comb-type jumper - Jumper connection configurations
DBC.2 (upper level)
DBC.2 (lower level)
Notes:
(*): rated voltage values can be subjected to a + 10 % tolerance as listed in Table 1 of IEC 60079-7 Std.
TERMINAL
BLOCK
DBC.2
the higher current value corresponds to the capacity embedding two jumpers for each one of the poles connected together
Note (***):
Instructions for the connection of PTC "Easy bridge" jumper.
After having cut the bar according to the number of poles, insert the cross-connection in the appropriate groove of the terminal block. At this point,
by using the blade of a screwdriver, push down the cross-connection until it reaches its blocking point. The cross-connection will be fully insulated
and intrinsically IPXXB protected. After having mounted the cross-connection the connected poles can be outlined and visually detected by placing
the PTC/SP green strip. This strip is supplied in a standard length of 100 mm and it can be easy cut to the appropriate length with the aid of a cutter.
To remove the cross-connection it is sufficient to remove the PTC/SP strip: insert the blade of the screwdriver in the jumper slot, then lift it up and
finally extract it.
I M 2 Ex e I Mb II 2G Ex e IIC Gb
Ex e IIC Gb
Ex e I Mb
DBC.2 two-level feed-through terminal block - Rated Ex values
Minimum /
Gauge
Rated
maximum
according
cross
to
flexible
section
conductor
IEC
[ [ [ [ mm² ] ] ] ]
[ [ [ [ mm² ] ] ] ]
60947-1
2,5
A3
0,2 / 4
Single or parallel
Pole skipping
extending
Ex e rated voltage
Ex e rated voltage
(Vac) (*)
(Vac) (*)
250
250
MULTIPLE
JUMPER
COMMONING BAR
PTC/2/...
TECHNICAL NOTE
Resistance
Rated
of the
current
terminal
[ [ [ [ A ] ] ] ]
block
[ [ [ [ Ω Ω Ω Ω ] ] ] ] (*)
-4
24
5,54 x 10
Adjacent with
partition (**)
Ex e rated voltage
(Vac) (*)
250
250
250
250
SCREW AND SLEEVE
-
N°
Page Rev.
31
2
Ex e
rated
Test voltage
voltage
[ [ [ [ Vac ] ] ] ]
[ [ [ [ Vac ] ] ] ]
(**)
400
2500
Staggered mode
Ex e rated voltage
(Vac) (*)
250
250
CURRENT OF THE JUMPER
-
21 / 24 (***)
Date
Issued
4
18/07/14
Parallel skipping
Ex e rated voltage
(Vac) (*)
250
250
[A]
Approved
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