1

some installation plan for ZAHRA - Multifunction safety monitoring relays

Plan RST 25

Plan RST26

φ cos

Plan N0. 3

time relay

2

Plan N0. 3

Plan N0. 4

3x400V

3x1000V

) 3x280V (start up phase

3x1000V

SPSPLC

16A

OCRRPG

h

passive

1367

3

1340

1362maximumminimum

start up current

short - current

520

N

PE

start up current

start up phaseshort current

ImaxI 2 • t

1365

1368

ABB, AEG Bohncke,, , Bender Mueller Weingaten, SIBASermes

ABBDOLDMES

L1

L3

B

K

TrafoMotorPump

11

14

12

Network Voltage : 345...445 V

PE

B

OFF

11

14

K

ON

PE 12 11 14

370

340 400

465

495435

0 5

1

2 3

4

Made inGermany

ZAHRA RST 300Earthing Breack

Control Relay

L1 L2 L3 OFF ON

U+ Time DelayU320V 415V 415V 515V 0 5 sec.

L1 L2 L3

L2

1A

ZAHRA GermanyDipl. Ing. Dj. Raseghi

RST 300 = ControlsEarthing Breack, Under and Overvoltage, Phase failurePhase Shift, Phase flash, Phase sequence, Asymemtry

RST 300

PE

bre

ack c

on

tro

l

K

Ea

rth

ing185

...2

55

V A

C

24 V

AC

/ D

C

Ex

tern

al R

ese

t

GND

P2

P1

S2

P2

S2

S1

P2

P1

S2

S1

P1

S1

L1 L2 L3

A B C

RestrictedGroundFault Protection

Relay of PowerTransformer Windings

low voltage - medium voltage - high voltage

24 V DC external Alarm relay Terminal16 and 18 maximum 45 mA

Exte

rna

l R

ela

y

Ala

rm

two usable power suplay: 24 V AC / DC Terminal 15 and 18 or 231 V

4..

.20

mA

0..

.10

V

L1 L2 L3

N

ZAHRA ESR 600

Made in Germany

RESET

0,3

2 3

4 1

2 3

4

30

6

12 18

24

Rel.1ON OFF

5

1

0,3 5 0

Earth Leakage Differential Relay

Rel.2ON

OFF

Rel.2Rel.1 16 A 16 A

I t [sec ]

2

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 19 20

ANSI = 30 - 87

GND

4

18

5..

.245

V

L1

2,5 mm2x 10 m

3x 400/231 V / 3x 415/245 V 40...60 Hz

P

K K

Fig. 2

18

5..

.24

5 V

ZAHRA Core Balance CT for Earth Leakage

ZAHRA special Core Balance CT for Earth Leakage

Dry

ru

n

K

L

Te

mp

era

ture

- S

en

sor

Ala

rm r

ela

y

Ala

rm r

ela

y

Tem

pe

ratu

re -

Se

nso

r

Balance CT :

CT 20 = 20

CT 60 = 60

CT 110 = 110

L2L3

L1L2

L3

ex

tern

al

ala

rm

re

lay

- 2

4 V

DC

ma

x 4

5 m

A

1A

3xCTs 00/5A 5VA Cl .1

PEGND

E1

E0

E2

Set-Reset automatic Pump Protection Relay RPP 685 Dry Run

Rela

y: 1

Ma

in R

ela

yTerm

ina

l 1 +

2

Rela

y: 1

Ma

in R

ela

yTe

rmin

al 1 +

2

Rela

y: 2

Set-

Re

set

auto

ma

tic

Term

ina

l 9 +

10

Rela

y: 2

Set-R

ese

t a

uto

matic

Term

inal

9 +

10

Fig. 1Usable for pressure switch or Dry run

Pre

ss

ure

Re

gu

lato

r

S2

S1

Pump or comperessor:

NC

NC

S2

S2

S2

/ N

C

S1 /

NC

E1 and E2 = interlocking flip-flop control of relay 2

0

1S2

S1

PSet-Reset automatic

Se

t-R

ese

t a

uto

matic S

et-

Re

set

au

tom

atic

15 poles- D subconnectorfor external indicator

and external reset

ANSI

27 30

37 49 50

51 50 V 51 V

50 N 51 N 59

74 ?? ??

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 19 20

IA tA Imax

Made inGermany

0 30

6

12 18

0 5

1 4

2 3

•0 5

1 4

2 3

0 30

6 24

12 18

Pump Protection Relay

-U +U IE TempDry

0

624

12 18

30 0

1 42 3

5

Rel.1

Rel.2

RESET2I tIA [A] tA [sec] Imax [A] IEarth Asym

ZAHRA RPP 685 D-sub

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 19 20

IA tA Imax

Made inGermany

0 30

6

12 18

0 5

1 4

2 3

•0 5

1 4

2 3

0 30

6 24

12 18

Pump Protection Relay

-U +U IE TempDry

0

624

12 18

30 0

1 42 3

5

Rel.1

Rel.2

RESET2I tIA [A] tA [sec] Imax [A] IEarth Asym

ZAHRA RPP 685 D-sub

Made in Germany

ZAHRARPP - Indicator

RESET

IA tA Imax -U +U

Rel.1 IE DRY Temp Rel.2

N N

N N

ON

OFF

1A

Relay 1

Relay 2

1

2

9

10

Relay 1Terminal

1 + 2

Relay 2Terminal9 +10

220 V

15 pole

.RPP 685