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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
V
A
MP 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
M
eas
ure
m
en
t
an
d mo
nito
ri
ng fu
nctio
n
s
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
Co
mm
uni
catio
n
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
Ha
rdware
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