Omega Speaker Systems LVH-200 - Manual (Page 3)

3
ELECTRICAL Step Two
Components:
Part
Number
Body
Material
Cable
Material
Thread
LVH‐200 PP Polymeric 1/2” NPT
Switch Rating:
Reed Switch Rating Max. Resistive Load
VA Volts Amps (AC) Amps (DC)
30
0‐50 0.28
120 0.28 0.07
240 0.14
Normally Open Operation: Normally Closed Operation:
Orientation mark on the top of the float. In the dry
state, the float rests on the bottom of the stem and
the circuit is open. Orientation mark on the bottom of the float. In the
dry state, the float rests on the bottom of the stem
and the circuit is closed.
As the switch becomes wet, the float becomes
buoyant and circuit closes. As the switch becomes wet, the float becomes
buoyant and circuit opens.
Contact Protection (Reed Switch):
When current is interrupted, the
inductance of the load generates a
high frequency voltage, which appears
across the switch contacts. If the
voltage is large enough, it can cause
arcing. Arcing can cause the contacts
to weld to each other resulting in
unreliable switching performance. It
is essential to protect the circuit, by
suppressing the voltage to prevent
arcing. This can be accomplished
through the use of a diode for DC
circuits and a resistor‐capacitor
network for AC circuits.
DC Contact Protection:
AC Contact Protection: