Electrex X3M, Руководство пользователя

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4.2.6 2 Wire Connection (double phase)
Low Voltage phase 1 CT
2P 2W Configuration
4.3 Output Connection
The instrument is equipped with two opto-isolated transistor outputs rated 27 Vdc, 27 mA (DIN 43864
standards).
The outputs working mode is set by default to operate as pulse output proportional to the Active energy
(output 1) and to the Reactive energy (output 2). They support an output rate of 1.000 pulses per kWh (or
kvarh) referred to the instrument input range without any CT and PT multiplier.
In order to calculate the energy value of each pulse the following formula must be considered.
kWh Pulse
K K
K PT CT
P
/
×
=
Where:
K
p
= energy of each pulse;
K
CT
= CT ratio ;
K
PT
= PT ratio ;
Pulse/kWh
= Pulse rate
Example: CT = 100/5; PT = 20.000/100
pulse kWh K
P
/ 4
1000
200 20
=
×
=
or
kWh
= Pulse count / 4
Other pulse rate settings may be however programmed as described in the instrument set up section.
The operating mode of the digital outputs may also be changed to work as alarm output or as remote output
device controlled by the Modbus protocol as described in the instrument set up section.