Measured Value; Pulse Output - F&F LE-02d CT Quick Start Manual

Stored in the memory index values transformer primary current
Ip possible to apply. Choosing the right value compatible with
the values of external transformers automatically sets the cor-
rect ratio, which is calculated according to the actual value of
the collected energy. The LCD displays the actual value of the
energy consumed in the format depending on the selected gear.

Measured value

Active energy consumed

Pulse output

The indicator has a pulse output. This allows you to connect a
pulse meter-reading pulses generated by the counter. For proper
operation of the indicator is not required to connect additional
devices.
Constant pulse counter is 12000 pulses/kWh for maximum input
current meter, or the secondary current transformer (5 A). When
using a dedicated transformer the number of pulses per 1 kWh is
calculated from the formula (12000×5)/Ip, where:
Example:
for transformer 5/5 A (Ip=5):
for transformer 100/5 A (Ip=100):
Ip – primary current transformer used
(12000×5)/5=12000 pulses/kWh
(12000×5)/100=600 pulses/kWh
AE+/AE-
- 2 -
[kWh]