bolid SIGNAL-20P, Руководство пользователя

Страница: 9 / 57

SIGNAL-20P SPECIFICATIONS
9
can be considered as linearly increasing together with the detector con-
sumed current increments.
So the device useful current can be calculated in accordance with the
formulas:
The supply voltage being equal to 12 V,
I = 3,33×i + 400 [ мА ]
The supply voltage being equal to 24 V,
I = 1,67×i + 200 [ мА ]
where I is the common device consumed current (without regard to
external notification devices) expressed in мА
i is the consumed current of active detectors included into the
device alarm loops expressed in мА
The common reserve time is calculated by formula
T = 1000 × W/I hours
W is the accumulator capacity in А
⋅
ч
I is the device consumed current in мА
The device in operating mode supplies loop inputs by from 19 to 22 V
DC voltage provided the terminal resistance is equal to 4,7 k О hm ±5% and
the detector consumed current doesn’t exceed 3 m А . This voltage level is
kept even in case of short circuit failure in one of the alarm loops. More then
4 loop short failures together are not allowed. The short closed loop current
is restricted by 26,5 mA.
The ripple voltage effective value does not exceed 20 mV.
If burglary detectors are included into the alarm loop (burglary alarm
loop) the device provides in operating mode:
- the value of loop resistance being equal no more than 1 kOhm with-
out regard to external element;
- the value of leakage resistance between wires or between any wire
and ground being equal no less than 20 kOhm.
If fire detectors are included into the alarm loop (fire alarm loop) the
device provides in operating mode:
- the value of the loop resistance being equal to value no more than
100 Ohm without regard to external element;
- the value of leakage resistance between wires or between any wire
and ground being equal no less than 50 kOhm.
The device’s loops are resistant to electromagnetic effects being
harmonic electromagnetic pickup with 50 Hz frequency and 1 V effective
voltage.