VAMP 257 - Application Modes (Feeder vs. Motor)

VAMP 257 Feeder and motor manager
Technical description
VAMP Ltd
10
VAMP 24h support phone : +358 (0)20 753 3264
VM257.EN002
IEEE
no
IEC symbol
Function name
VAMP 257
P Active power X
Q Reactive power X
S Apparent power X
E+, E- Active Energy, exported / imported X
Eq+, Eq- Reactive Energy, exported / imported X
PF Power factor X
Phasor diagram view of voltages X
Phasor diagram view of currents X
2nd to 15
th
harmonics and THD of
currents
X
2nd to 15
th
harmonics and THD of
voltages
X
Condition monitoring CB wear X
Condition monitoring CT supervision X
Condition monitoring VT supervision X
Voltage interruptions X
Measurement and monitoring functions
Voltage sags and swells X
IEC 60870-5-103 X
Modbus TCP
X
Modbus RTU
X
Profibus DP
X
SPA-bus communication
X
Man-Machine-Communication, display
X
Communication
Man-Machine-Communication, PC
X
Number of phase current CT’s 3
Number of residual current CT’s 2
Number of voltage input VT’s 3
Number of digital inputs 26
Number of extra digital inputs with the
DI19/DI20 option.
2 *
Digital inputs parallel T5, T6, T7, T8 4
Number of trip outputs 8
Number of alarm outputs 1
Hardware
Number of heavy duty alarm outputs 4
*) Only one arc channel is available with DI19/DI20 option
2.2.2. Application modes
The application modes available are the feeder protection mode
and the motor protection mode. In the feeder protection mode
all current dependent protection functions are relative to
nominal current I
n
derived by CT ratios. The motor protection
functions listed in chapter 2.2.1 are unavailable in the feeder
protection mode. In the motor protection mode all current
dependent protection functions are relative to motor’s nominal
current I
mot
. The motor protection mode enables motor
protection functions which are listed in chapter 2.2.1. All
functions which are available in the feeder protection mode are