dok fly mra4e mra4
DESCRIPTION
releu protectieTRANSCRIPT
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Protection Relay for Feeder, Grid and Generator Applications
Protection Technology made simple
ApplicationThe MRA4 is a protection relay which uses the latest Dual-Core-Processor Technology to provide precise and re-liable protective functions and is very easy to operate. Its various protective functions are specifically tailored to the protection of incoming and out-going 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 overcurrent protection
Directional and non-directional • overcurrent/short-circuit protection
Tripping characteristics: • DEFT ANSI: NINV, VINV, EINV IEC: NINV, VINV, LINV, EINV Thermal Flat, IT, I2T, I4T
Voltage controlled•
Disturbance recorder120 s non volatile, •
32 samples per cycles
Additional highlightsAutomatic reclosing•Inrush•Thermal replica•Four stages external protection•Plausibility checks•Adaptive parameter sets•Energy counters•Status display•Comprehensive measured values •
and statisticsMasking of unused functions•
Parameter setting support by software
Copy parameter sets•Compare parameter sets•Setting files are up and down •
convertible (across versions)
Comprehensive frequency protection packageEach of the six stages can be used as:
f< or f> (over- and • underfrequency supervision)
df/dt (ROCOF) • Rate of change of frequency
(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)•
Power protection packageSix stages power protection •
Each can be used as P>, P<, Pr, Q>, Q<, Qr, S>, S<
Two stages power factor (PF)•
SupervisionCurrent transformer supervision•Voltage transformer supervision•Circuit breaker failure protection•Trip circuit supervision•Cold load pickup•Switch onto fault•
HighPROTEC
MRA4
Four stages earth fault protectionDirectional and non-directional •
earth fault protectionTripping characteristic: •
DEFT ANSI: NINV, VINV, EINV IEC: NINV, VINV, LINV, EINV Thermal Flat, IT, I2T, I4T
Voltage controlled•
Two stages unbalanced load protection
Supervision by definite time or • tripping characteristic
Four stages voltage protectionUnder- and overvoltage•Programmable undervoltage •
time depending characteristic
Two stages residual voltage protection
VE>•
Six stages voltage asymmetry supervision
Under- and overvoltage in • positive phase sequence system, overvoltage in negative phase sequence system
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Functional Overview
PrOTeCTive FunCTiOnS elements AnSi
I, time overcurrent and short circuit protection, all stages can be configured for directional or non-direc-tional supervision. Tremendous reset options (instantaneous, definite time, reset characteristics accor-ding to IEC and ANSI). Voltage controlled overcurrent protection by means of adaptive parameters.
6 6
50P, 51P, 67P
51V
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
IE, 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 overcurrent protection by means of adaptive parameters.
4 4
50N,51N, 67N
51V
V<, V>, V(t)<, under- and overvoltage protection, time dependent undervoltage protection 4 27, 59
Voltage asymmetry supervision (V012)V1, under and overvoltage in positive phase sequence systemV2, overvoltage in negative phase sequence system
6 47
Each of the six frequency protection stages can be used as: 6
f< or f> (over- and under frequency supervision)• 81U/O
df/dt rate of change of frequency (ROCOF)• 81R
(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)• 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
SuPerviSiOn FunCTiOnS elements AnSi
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
Non volatile event recorder up to 120 s with 32 samples per cycles
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3
1
4
MRA4
50BF
60FL27
Fault recorder
Event recorder
Disturbance recorder
V, VE, V012, I, IG, f, delta phi, theta , IH2,
IGH2, I012, P, Q, S, PF, cos phi, W
Measured and calculated values49 51P 67P50P46
81 U/O
67N79 Inrush
59 59N 50N 51N
74TC
7881R
37
32 60L 55
SOTF CLPU
47
51V
Functional overview in AnSi form
Connections
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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
Woodward SEG GmbH & Co. KGKrefelder Weg 47
D - 47906 Kempen
Sales TeamPhone: +49 (0) 21 52 1 45 - 1
Fax.: +49 (0) 21 52 1 45 - 3 54e-mail: [email protected]
ServiceTelefon: +49 (0) 21 52 1 45 - 6 14/3 34
Fax.: +49 (0) 21 52 1 45 - 4 55e-mail: [email protected]
Visit us at www.eps.woodward.com DO
K_FL
Y_M
RA4_
04.0
9_EN
Enabling Electrical Power Systems Integration
Order form MrA4
Directional Feeder Protection MrA4
Digital Inputs
Binary out-put relay Housing Large
display
816
713
B2B2
--
AD
Hardware variant 2Standard
0
Housing and mountingDoor mountingDoor mounting 19“ (flush mounting)
A B
Communication protocolProtocol/without protocol RS485/terminals, Modbus RTU, IEC60870-5-103 Ethernet (RJ45), Modbus TCP, IEC61850* prepared (Hardware/Interface) Optic fiber, Modbus RTU, IEC60870-5-103 RS485/D-SUB, Profibus**, Modbus RTU, IEC60870-5-103
A B C F G
Presetting of available menu languagesStandard English/German
* Additional cost for the software update tool IEC61850 per device are 250 €. The devices can be updated via device front interface (RS232) and PC locallyExpected availability: 01.01.2010**expected 07.09