17
Instruction Manual
RECmax-CVM
4.- OPERATION
4�1�- OPERATING PRINCIPLE
RECmax-CVM
is a device for protecting single-phase or three-phase electrical installations of up to 63
A in which a high continuity of electrical service must be guaranteed�
The device has an automatic reset system after a trip, so it reconnects on its own after a period of time,
with the installation recovering power without human operator intervention�
The basic functions of the
RECmax-CVM
are:
Earth leakage protection (protecting people against electric shock and property against the risk of
fire)
Protection against overloads and short-circuits with a circuit breaker�
Measurement and display of electrical parameters, see
Table 4
, in the four-quadrant (consumption
and generation)�
0º
90º
180º
-90º
Capacitive
Capacitive
Inductive
Inductive
Generation
Power
Consumption
Power
Single-phase
Three-phase
Single-phase
Single-phase
Single-phase Three-phase
Three-phase
Three-phase
k
k
k
k
k
k
k
k
k
k
k
k
k
k
k
k
k
k
k
k
Figure 9: Measurement convention�
Table 4: Measurement parameters of the RECmax-CVM�
Parameter
Units
Phases
L1-L2-L3
Total
III
N
Phase-neutral voltage
(2)
Vph-N
Phase-phase voltage
Vph-ph
Current
(2)
A
Frequency
Hz
Active power
(2)
kW
Apparent Power
(2)
kVA
Inductive Reactive Power
(2)
kvarL
Capacitive Reactive Power
(2)
kvarC
Power factor
PF
Cos
φ
(2)
φ
Voltage THD %
(2)
% THD V
Current THD %
(2)
% THD A
