Franklin Electric incon OPTIMIZER3, Руководство пользователя, Страница: 26 / 60

26
SF₆ ALARM SETTINGS
Optimizer3 continuously records SF₆ density and SF₆ pressure. This is done separately for every SF₆ sensor that is used, up to the
maximum of 8 sensors.
The Fill Pressure, Warning, and Danger alarm pressures should always correspond to what is written on the circuit breaker
nameplate. In Figure 26, the Operating Pressure is the Fill Pressure and is 87 PSIG, the Alarm Pressure is 75 PSIG, and the Minimum/
Cutout Pressure is 72 PSIG. The Gas Fill Weight is 128 lbs.
Figure 26
– Fill Pressure Setting Example 1
In Figure 27, the Normal Operating Pressure is the Fill Pressure and is 66.7 PSIG, the Low-Pressure Alarm is 52.2 PSIG, and the
Minimum Pressure is 47.9 PSIG. The Gas Fill Weight is 26 lbs.
Figure 27
– Fill Pressure Setting Example 2
The examples in Figures 26 and 27, apply to circuit breakers with one common SF₆ system, using one density sensor. For circuit
breakers having three independent SF₆ systems (one for each pole), the settings are slightly different.
The Fill, Warning, and Danger alarm pressures will be the same for each pole. For this type of circuit breaker, with separate SF₆
systems for each pole, one SF₆ density sensor must be installed on each pole. Each SF₆ density sensor works independently and
leak calculation for each pole uses the fill weight value programmed, as if it were for each individual pole.