Epcos BR 7000 - Section 3: CONNECTION ALTERNATIVES MEASURING VOLTAGE AND MEASURING CURRENT

Section 3: CONNECTION ALTERNATIVES MEASURING VOLTAGE
AND MEASURING CURRENT
According to the existing grid and the desired operating mode (CONTROL-MODE
Programming) the BR7000 has to be connected accord. one of the following alternatives.
In grids without neutral conductor the connector N(PE) from meas.voltage at
the controller has to be connect with the PE of the grid !
Alternative 1: measuring performed in each phase - 3 current transformers needed
Use: CONTROL-MODE: 1 - 4 (control modes see page 11)
BR7000
Alternative 2: single-phase measuring via current transformer in L1 Values extrapolated (balance assumed).
Measuring complies with conventional measuring for switching of three-phase capacitors.
Use: CONTROL-MODE 5
BR7000
Alternative 3: single-phase measuring as alternative 2 , but with capacitor current measuring in the compensation
system for collection of real capacitor currents.
Use: CONTROL-MODE 6
BR7000
Reserve
PE
N
L2 (S)
L3 (T)
L1 (R)
( L1) ( N )
L1 L2 L3 N(PE)*
Supply voltage
110-230V~
Measuring voltage Um
Meas.current
L3
Meas.current
L2
Meas.current
L1
Load site
( L1) ( N )
L1 L2 L3 N(PE)*
Supply voltage
110-230V~
Measuring voltage Um
Meas.current
L3
Meas.current
L2
Meas.current
L1
L1 (R)
L2 (S)
L3 (T)
PE
N
Load site
- 6 -
( L1) ( N )
L1 L2 L3 N(PE)*
Supply voltage
110-230V~
Measuring voltage Um
Meas.current
L3
Meas.current
L2
Meas.current
L1
L1 (R)
L2 (S)
L3 (T)
PE
N
L1 L2 L3 N
P F C- system