Module SEPAM Generalities

MV Relais : SEPAM generalities

By Y. NICOLASJun-2012

Schneider Electric – BU Infrastructure - PEC

Schneider Electric 2- Division - Name – Date

Usual ANSI codes for current protection

50 – 51 : Phase overcurrent

50N-51N / 50G-51G : Earth fault / sensitive earth fault

49RMS : Thermal overload

67 : Directional phase overcurrent

67N : Directional earth fault

64REF : Restrictive earth fault

87T : transformer differential

87 M : Machine differential

87B : Busbar differential

87L : Line differential

(46 : Negative sequence / unbalance)

(37 : Phase undercurrent)

∑ 3 CT by SEPAM

With CSH200 on 3 phases

With CSH120 on neutral

Current & Voltage analog

Inputs are needed

The way for the polarity of CT is

important


Usual ANSI codes for Voltage protection

27 : Undervoltage

(27D : Positive sequence undervoltage)

27R : Remanente undervoltage

59 : Overvoltage

59N : Neutral voltage displacement

(47 : Negative sequence overvoltage)

25 : Synchro-check

Normally

=

not latchedSolution to detect the first fault on IT earthing system

Usefull to be sure that no voltage on busbar even if some motor are not stop

Source 1 Source 2

25

- 25 = Module MCS025 for SEPAM (only on SEPAM 60 or 80)- Voltage Reference = 1 single Voltage or 1 composed voltage- VT healthy circuit is needed (to be sure when the busbar is « dead »

VT VT

FuseFuse

MCB MCB

Fuses are drawn-in

Fuses are not blown

MCB close

VT are healthy (=1) if fuses are drawn-in and fuses are not blown and MCB is closed


Usual ANSI codes for transformer or motor protection

26 / 63 : Thermostat / buchholz (DMCR or DGPT2)

38 / 49T : Temperature monitoring

48/51LR : Excessive starting time / Loked rotor

66 : Starts per hour

Transformer protection

Motorprotection

8 sensors (PT100 or Ni100)

per module (MET-148) for SEPAM


ANSI codes for frequency & Power protection

(81H : Overfrequency)

(81L : Underfrequency)

(81R : Rate of change of frequency)

32P : Directional active overpower

(32Q : Directional reactive overpower)

(37P : Directional active underpower)

Others ansi codes :

- 64G (100% stator)

– 79 (recloser)

– 24 (overfluxing)

– 67NC (for compensed neutral)…


SEPAM Range

SEPAM series 20, 40, 60 & 80

SEPAM series 10

SEPAM series 100


SEPAM series 100SEPAM 100 RT =

For transformer protection applications : DGPT2 or Buchholz + thermostat information.

For back-up protection : Phase overcurrent (50/51) & earth fault (50N/51N) :

SEPAM 100 LA =

SEPAM 100 LD = High impedance differential relay.It provides restricted earth fault, busbar and machine protection.

SEPAM 100 MI = High impedance differential relay.It provides restricted earth fault, busbar and machine protection.


SEPAM series 10


SEPAM series 20, 40, 60 & 80


SEPAM series 20 & 40 (selection table 1/2)


SEPAM series 20 & 40 (selection table 2/2)


SEPAM series 60 (selection table 1/3)


Series80 & 60

Remoteadvanced UMI

Integratedadvanced UMI

Mimic-basedUMI

Series20 & 40

Basic UMI

Different SEPAM UMIs


Optional modules Sepam series 20 & 40ACE949-2ACE959ACE937ACE969TPACE969FOcommunicationmodules

MES148-2temperature sensor modules

MSA141analogoutput module

MES114optional input/output modules

DSM303remote UMI


Optional modules Sepam series 60 & 80ACE949-2ACE959ACE937ACE969TPACE969FOcommunicationmodules

MES148-2temperature sensor modules

MCS025synchro-checkmodule

MSA141analogoutputmodule

MES120 optional input/output modules

DSM303remote UMI


I/O modules

FOR SEPAM Series 60 & 80 : MES120, MES120G, MES120H14 inputs / 6 outputs modulesUp to 3 modules for SEPAM 80Up to 2 modules for SEPAM 60

FOR SEPAM Series 20 & 40 :MES114, MES114E, MES114F10 inputs / 4 output modules1 module by SEPAM


ACE949-2 : 2-wire RS 485 network interface

ACE959 : 4-wire RS 485 network interface

ACE937 Fiber optic interface

ACE969TP-2 Network interfaces

ACE969FO-2Network interfaces

ACE850FONetwork interfaces

ACE850TP Network interfaces

Communication module possibilities

IEC 61850

DNP3

Modbus RTU

Modbus TCP/IP

IEC 60870-5-103


Residual current inputs : CSH 30/120/200●CSH120 or CSH200 core balance CT

● ratio of 1/470

●CT + CSH30● connection of CT with

secondary ●1A: 2 turns●5A: 4 turns

● Or direct on CCA634

Not adapted for

outdoor installatio

n

Be carrefull lengh of

wiring is

limite

d


Current sensor inputs●CCA630/CCA634 connector

●The CCA630 connector is used to connect 3 phase current transformers to Sepam

●The CCA634 adds an input for a residual current transformer : do not connect a core balance ctWith CCA634 Io input on A or E connector must not be used.

●Both contain interposing ring CTs with through primaries and be disconnected with the power on since disconnection does not open the CT secondary circuit.

Series 20Series 40Series 80

CT 1 or 5A


Characteristics comparisonSeries 80Series 20 Series 40

Sensors 3 CTs + 1 core balance CT Or 4 VTs

3 CTs + 3 VTs + 1 core balance CT

3 CTs + 4 VTs + 2 core bal. CTs6 CTs + 4 VTs + 2 core bal. CTs

Or 3 CTs + 8 VTs + 1 cor. bal. CT

Communication port 1 1 2

Equation editor - Yes Yes

Logipam - Yes (optional)

Removable cartridge - Yes

Battery - Yes

0 inputs / 5 outputsBasic I/O 0 inputs / 4 outputs

42 inputs / 23 outputsMaximum I/O 10 inputs / 8 outputs

24 / 250 V DCPower supply 24 / 250 V DC110 / 240 V AC

No UMI Or advanced UMI

Or mimic-based UMI

User / MachineInterface

No UMI or remote advanced UMI

-

-

-


SEPAM series 20 : Ordered form (1/2)


Main points to remember● Take care of storage conditions

● Connecting Sepam and additional modules to earth is compulsory.

● All output relays are not identical :● Some are control type with 8A continuous current

» For Sepam 20/40 : O1 / 02 / 011» For Sepam 60/80 :O1 -> 04 et O101 / O201 / O301

● The availability of some protection functions depend on VTs wiring

● ACExxx communication modules need to be powered with 12 or 24 V DC

● Synchro check option only work with series 60 or 80 and need specific cable CCA 785

Module SEPAM Generalities

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