MEDC Ex ResistTel MB - Manual (Page 14)

14
Explosion protection – parameters
1. Non-secure power circuits
1.1 Telephone network
(Clamps A/B no.: 13 – 14)
Maximum input voltage U
m
(call voltage) AC 90 V
Permissible frequency range 16...54 Hz
or
Maximum input voltage U
m
(supply voltage) DC 66 V
Maximum input rated current 100 mA
Maximum input short circuit current I
K
35 A
(In the input of this device is a fuse
with a disconnect threshold of 35 A.)
1.2 External second alarm: only for the connection to passive
conductors
(Clamps Bell shunt1, Bell shunt no.: 15 –16)
Maximum call voltage
AC 90 V
Frequency range 16...54 Hz
or
Maximum supply voltage
DC 66 V
2. Secured Circuits
2.1
Headset (microphone)
(Clamp pair HSM no.: 5 – 6)
Maximum output voltage U
o
17 V
Maximum output current I
o
90 mA
Maximum output rating P
o
80 mW
Maximum external capacity C
o
375 nF
Maximum external inductance L
o
1,2 mH
2.2
Headset (earphone) or second receiver
(Clamp pair HSR No.: 7 – 8)
Maximum output voltage U
o
17 V
Maximum output current I
o
110 mA
Maximum output rating P
o
190 mW
Maximum external capacity C
o
375 nF
Maximum external inductance L
o
1,2 mH