Burkert Type 6106 - Manual (Page 11)

11
Technical data
6.5.5. Safety data
Group: II C
Ignition protection type: Ex ia
Temperature class: T4, T5 or T6
Max. permitted input voltage (U
i
): 35 V
Max. permitted input current (I
i
): 0.9 A
Inductance (L
i
): ~ 0
Capacity (C
i
): ~ 0
The maximum permitted voltages and the associated short-
circuit currents can be found in Table A1 in the standard EN
60079-11 for the corresponding gas group.
Ignition protection type Ex ia II C: Coil Type AC21 (example):
U
i
15 18 20 22 25 28 30 35
I
i
0.9 0.44 0.309 0.224 0.158 0.12 0.101 0.073
The coils of type AC21 are available in two versions:
• Version for use with 300 Ω supply module (300 Ω barrier),
• High-resistance version for use with other authorized supply
modules (e.g. 8 x remote I/O from Stahl).
Version Resis-
tance
R20 [Ω]
Minimum
clamping
voltage
[V]
Minimum
current
[mA]
Type
Version which
uses 300 Ω
supply module 320 9.3 29 EX I / 21
High-resistance
version 475 10.9 23 EX I / 22
Version for Type
8650 125 6.1 49 EX I / 23
The maximum voltage and current values are specified by
the permitted electrical equipment.
6.5.6. Permitted ambient temperature
The maximum permitted ambient temperature depends on
the power fed in, the temperature class and the installation.
For the appropriate values see chapters “6.5.2” “6.5.3” and
“6.5.4”
.
english
PTB 01 ATEX 2175