Hochiki IFD-E(IS) - Manual (Page 10)

10 Hochiki Europe (UK) Ltd
2-3-0-809/ISS2/JUL07
IS System Drawing
Detector Input Parameters
Terminal 1 with respect to terminal 2
Terminal 3 with respect to terminal 4
Ui = 30V
Ii = 100mA
Pi = 0.65W
Ci = 0.03µF
Li = 0
Terminal 5 with respect to terminal 6
Terminal 7 with respect to terminal 8
Ui = 30V
Ii = 100mA
NOTE 1
Each Barrier fed circuit must be a separate circuit and must not
be connected with any other electrical circuit.
NOTE 2
The electrical circuit in the hazardous area must be capable of
withstanding an AC test voltage of 500 volts RMS to earth or
frame of the apparatus for one minute.
NOTE 3
The installation must comply with national installation
requirements (for example to EN 60079-14)
NOTE 4
The capacitance and either the inductance or the inductance to
resistance (L/R) ratio of the hazardous area cables must not
exceed the maximum permissible parameters for the required
groups IIA, IIB and IIC.
NOTE 5
The cable may be separate cables or a twin pair contained in a
type ‘A’ or a type ‘B’ multicore cable (as defined in clause 5.3 of
EN50 039). Provided that the peak voltage of any circuit
contained within the muticore does not exceed 60 volts.
NOTE 6
If required a loading resistor of not less than 3k 0.5 watt and
having a surface area between 20cm² and 10cm² may be
connected between the terminals of any circuit, but not between
circuits.