Kessel SG 400 V Mono Original Operation Manual page 45

3.2.1 Additional information on ATEX design
The requirements of the standards EN 50014 +
II (1) GD [Ex ia Ga] IIC
A1-A2, EN 50020:2002 are satisfied.
Permissible air humidity
Maximum operating height
Maximum power consumption
Direct current 230 V (AC) / 50 Hz +- 10% to
(terminals N, L1, L2, L3, PE)
Input circuits
(terminals TF1a, TF2a, TF1b, TF2b)
Output circuit potential-free
contact
Switching contacts U = 400V +-10% <=4kW,
Power contactor
Bedienungselem. Stromkreis
The control unit must be operated outside the potentially explosive area. The
necessary classification: Group II, Category (1)G, appropriate operating equip-
ment for a gas atmosphere.
EU type approval certificate for the Zener barriers
010-532_05
10 to 80%, non-condensing
2000 m above sea level
11 VA Mono / 15 VA Duo systems
supply the electronics
Thermal inputs Un = 230V
U = 42 V ac dc /0.5 A
50Hz
passive (switch and button)
Installation and operating manual
Name of standard
II (1) GD [Ex ia Ga] IIC [Ex ia Da] IIIC (-20°C ≤ Ta ≥ 60°C)
Technical
Single barrier
specification
Level circuit in type of protection intrinsic safety Ex ia IIC
Terminals OFF, ON, ALARM
Zener barrier MTL 7789+,
max. values
Uo
Io
Ro
Po
Co
Lo
Lo/Ro 56 µH* /106 µH/Ω
*Zener barrier MTL 7787+
Double barrier
OFF, ON1, ON2,
ALARM
15.8*/28 V
93 mA
300 Ω
0.65 W 0.33 W
0.083 µF
3.5*/ 16 mH 16 mH
106 µH/Ω
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