Embed Size (px)
DESCRIPTION
Informacion basica del relevador MRA4E de la marca Woodward
Citation preview
HighPROtecMra4
aPPlic ation the Mra4 is a protection relay which uses the latest dual-core-Processor technology to provide precise and reliable protective functions and is very easy to operate. its various protective func-tions are specifi cally tailored to the protection of incoming and outgoing feeders in MV systems. it also can be used for grid and generator protection.
all incluSive: all protection features without
extra charge Parameter setting and evaluation
software disturbance record analysis software
SiX StaGeS PHaSe over-current Protec tion
directional and non-directional overcurrent/short-circuit protection
tripping characteristics: deftansi: ninV, VinV, einViec: ninV, VinV, linV, einVthermal flat, it, i2t, i4t
Voltage controlled and restraint
Four StaGeS eartH Fault Protec tion
directional and non-directionalearth fault protection
tripping characteristic: deftansi: ninV, VinV, einViec: ninV, VinV, linV, einVthermal flat, it, i2t, i4t
Voltage controlled and restraint
t wo StaGeS unBalanceD loaD Protec tion
supervision by defi nite time or tripping characteristic
SiX StaGeS voltaGe Protec tion
Under- and overvoltage Programmable undervoltage
time depending characteristic
t wo StaGeS reSiDual voltaGe Protec tion
Ve>
SiX StaGeS voltaGe aSYmmetrY SuPerviSion
Under- and overvoltage in positive phase sequence system, overvoltage in negative phase sequence system
DiSturBance recorDer 120 s non volatile,
32 samples per cycles
aDDitional HiGHliGHtS automatic reclosing inrush thermal replica four stages external protection Plausibility checks adaptive parameter sets energy counters status display comprehensive measured values
and statistics Masking of unused functions
Parameter Set tinG SuPPort BY SoFt ware
copy parameter sets compare parameter sets setting fi les are up and down
convertible (across versions)
comPreHenSive FreQuencY Protec tion PacK aGeeach of the six stages can be used as:
f< or f> (over- and underfrequency supervision)
df/dt (rocof) (f< and df/dt) or (f> and df/dt)
combination of over-, under- and rateof change of frequency (rocof)
(f< and df/dt) or (f> and df/dt) combination of over-, under-and increase of frequency
delta Phi (Vector surge)
Power Protec tion PacK aGe
six stages power protectioneach can be used as P>, P<, Pr, Q>, Q<, Qr, s>, s<
two stages power factor (Pf)
Q(v) Protec tion Undervoltage directional reactive power
protection with reclosing disengaging
SuPerviSion current transformer supervision Voltage transformer supervision circuit breaker failure protection trip circuit supervision cold load pickup switch onto fault Breaker Wear
Protection relay for feeder,Grid and Generator aPPlications
Protection tecHnoloGyMade siMPle
w w w . w o o d w a r d . c o m
MRA4 Protection relay for feeder,Grid and Generator aPPlications
Func tional over vie w
elements anSi
Protective Functions
i, time overcurrent and short circuit protection, all stages can be configured for directional or non-directional supervision. tremendous reset options (instantaneous, definite time, reset characteristics according to iec and ansi).
Voltage controlled overcurrent protection by means of adaptive parameters.Voltage dependent overcurrent protection.negative phase sequence overcurrent protection
6
50P, 51P, 67P
51c51V51Q
i2>, unbalanced load protection with evaluation of the negative phase sequence currents 2 46
iB, overload protection with thermal replica and separate pick-up values for alarm and trip functions 1 49
iH2/in, inrush detection with evaluation of the 2nd harmonic 1 inrush
iG, earth overcurrent and short circuit protection, all stages can be configured for directional or non-directional supervision. tremendous reset options (instantaneous, definite time, reset characteristics according to iec and ansi).
Voltage controlled earth overcurrent protection by means of adaptive parameters. Voltage dependent earth overcurrent protection.
4
4 4
50n, 51n, 67n
51nV 51nc
V<, V>, V(t)<, under- and overvoltage protection, time dependent undervoltage protection 6 27, 59
Voltage asymmetry supervision (V012) V1, under and overvoltage in positive phase sequence system V2, overvoltage in negative phase sequence system
6 47
each of the six frequency protection stages can be used as:
f< or f> (over- and under frequency supervision) df/dt rate of change of frequency (rocof) (f< and df/dt) or (f> and df/dt) combination of over-, under- and rate of change of frequency (rocof) (f< and df/dt) or (f> and df/dt) combination of over-, under- and increase of frequency delta Phi (Vector surge)
6
81U/o81r
78
Ve, residual voltage protection 2 59n
ar, automatic reclosing 1 79
exP, external alarm and trip functions 4
PQs, Power protection 6 32, 37
Pf, Power factor 2 55
Q(V) Protection (undervolt. dep. directional reactive power protection with reclosing disengaging)
Supervision Functions
cBf, circuit breaker failure protection 1 50Bf
tcs, trip circuit supervision 1 74tc
Vts, voltage transformer supervision by comparing phase and residual voltages 1 60fl
Vts, fuse failure protection via digital input 1 60fl
cts, current transformer supervision 1 60l
clPU, cold load pickup 1
sotf, switch onto fault 1
Bwear, Breaker Wear 2
non volatile event recorder up to 120 s with 32 samples per cycles
3
1
4
MRA4
*
74TC79 50
BF 50P 51P 51Q46 37
81R60FL
81 U/O784759N
5927
50N 51N 51R
67PQ(U)
60L 49
32 5567N
51C*
51V
Inrush CLPU SOTF
Fault recorder
Event recorder
Disturbance recorder
V, VE, V012, I, IG, f, delta phi, theta , IH2, IGH2, I012, P, Q, S,
PF, cos phi, Wcurrent and voltage
phasors
Measured and calculated values
IRIG-B00X* = Via Adaptive Parameters
Func tional over vie w in anSi Form
connec tionS
Enabling Electrical Power Systems Integration
TM
MRA4 Protection relay for feeder,Grid and Generator aPPlications
orDer Form mr a4
Directional Feeder Protection mra4
Digital inputs
Binaryoutputrelays
Housing
816
713
B2B2
ad
Hardware variant 2standard 0
Housing and mountingdoor mountingdoor mounting 19“ (fl ush mounting)
aB
communication protocolWithout protocolrs485/terminals, Modbus rtU, iec60870-5-103ethernet (rJ45), Modbus tcP, iec61850* prepared (Hardware/interface)optic fi ber, Profi bus dPrs485/d-sUB, Profi bus dPoptic fi ber, Modbus rtU, iec60870-5-103rs485/d-sUB, Profi bus, Modbus rtU, iec60870-5-103
aBcdefG
available menu languagesenglish/German/russian
all devices are equipped with iriG-B interface.
the parameterizing and disturbance analyzing software is included in delivery of HighProtec devices.
* For information about additional cost for the software update tool IEC61850 per device, please contact our sales team. The devices can be updated via device front interface (RS232) and PC locally. Please ask for availability.
current inputs 4 (1 a and 5 a) with automatic short circuitersvoltage inputs 4 (0– 800 V)Digital inputs switching thresholds adjustable via softwarePower supply Wide range power supplyterminals all terminals plug typemounting door mountingtype of enclosure iP54Dimensions of housing 212.7 mm x 173 mm x 209 mm (W x H x d)weight (max. components) approx. 4 kg
contac t:
north & central america
Phone: +1 970 498 3634
e-mail: [email protected]
South america
Phone: +55 11 3034 1120
e-mail: [email protected]
europe
Phone: +49 2152 145-319
e-mail: [email protected]
middle east & africa
Phone: +971 2 6275185
e-mail: [email protected]
russia
Phone: +7 960 272 4205
e-mail: [email protected]
china
Phone: +86 512 8818 5515
e-mail: [email protected]
india
Phone: +91 22 2561 2256
e-mail: [email protected]
aSean & oceania
Phone: +49 711 78954-511
e-mail: [email protected]
© Woodward
all rights reserved | 03.2010 do
K_fl
y_M
ra4_
03.1
0_en
