CIRCUTOR WRU-10-MT User Manual

WRU-10 MT Electronic Earth-leakage Protection Relay

Code

RAL

R

P24275

REC

REC

Super-inmunized Type A electronic relay. Built-in core balance
transformer, 28 mm.Device with self-reclosing system. Symbol on
display. It has programmables relays, 3 outputs. Main trip and 2 pre-alarm signals. It has 1
free voltage input for external ON / OFF. Mounting in DIN rail 46277 (En50022) or PANEL
72x72 by means of accesories M5ZFF1. Displays setting values and instantaneous earth
leakage current value (TRMS)

GENERAL DESCRIPTION

Type

WRU-10 MT

Sensivity

0,03-0,1-0,3-0,5-1-3 by direct setting

5-10-30 by SETUP

REC

PRELIMINARY CONSIDERATIONS

CHECKS ON RECEPTION

On receving the instrument, check the following points:

- The unit’s specifications are the same as those on your order.

- Check that the device has not suffered any damage during transport.

You can download more information from CIRCUTOR website, www.circutor.es

SAFETY PRECAUTIONS

The staff using or handling the unit must follow the common safety measures and warnings included in the
instruction manual.

The WRU-10 MT unit has been specifically designed for its installation in a electric board, enclosure to a
DIN rail or mounted in panel by means of accesories. It has a flashing green led (ON) when it is operation
and, therefore, it shows that there is voltage and current in the electronic circuit. The user must make sure
that the equipment is not conected to the power supply at all the times, even when the LED is not flashing.

INSTALLATION AND START-UP

The user must take into account and observe the informations and warnings included in this instruction
manual to guarantee the correct operation of the equipment and comply whit the safety specifications. The
equipment must not turned on until is fully installed in the electrical panel.

The unit´s protections systems might not be effective if the unit is used for purpose other than

!

those specifications by the manufacturer.

Disconnect the equipment from the power supply when the unit´ssafety protection systems are not working
or there are signs of a problem (in case of visible damage). In this case, contact a qualified technical service
or with our own technical service (TAS).

INSTALLING THE EQUIPMENT

DIN rail installation. On the inside of the hole must pass all live conductors supplyng electrical energy to
loads or part of the installation which requires it to earth leakage protection with this device. In single-phase
installation (phase and neutral, L and N), three phase - 3 wires (three phases, L1, L2 and L3) or three
phases - 4 wires (L1, L2, L3 and N). Depending on the level of wiring insulation can be pass through the hole

should be inside the electrical board. Please note that with the connected equipment, terminals and
opening covers or removing elements, can give access to dangerous parts to touch. The equipment must
not be used until it has completely finished installation. The unit must be connected to a power supply circuit
protected by fuses in line with the range and power consumption. In turn, the supply circuit must be
provided with a circuit breaker or equivalent device to disconnect the equipment from the mains. During the
wiring cable is advisable a section permitted between 1 - 1.5 mm2. A recommended torque of 0.5-0.6 N.M.
Cable Stripping Tools length 7 mm.

Power supply Operating conditions Safety

Voltage 230 Va.c..
Frequency 50!60 Hz
Burden 4,5 VA

CONNECTIONS BY MEANS OF PLUG-IN CONNECTORS

TERMINAL DESCRIPTION FEATURES

1 - 2 EXTERNAL INPUT TRIP / RECLOSE
3 PRE-ALARM OUTPUT RELAY, NO
4 PRE-ALARM OUTPUT RELAY COMMON
5 LOCKED OUTPUT RELAY, NC
6 LOCKED OUTPUT RELAY COMMON
7 SUPPLY 230 Va.c. (Phase or Neutral)
8 SUPPLY 230 Va.c. (Neutral or Phase)
9 TRIPPING OUTPUT RELAY,OFF MOTOR
10 TRIPPING OUTPUT RELAY, COMMON
11 TRIPPING OUTPUT RELAY,ON MOTOR
12 INPUT AUX. CONTACTS

Temperature -20...70 C

+/- 30%

Relative humidity 95%
Max. Altitude 2.000 m
Protection Ip20

¡ IMPORTANT !

Category III - 300 Vac (En61010)
Double - insulated electric shock protection
clas II - UL 1053 UL LISTED Certification ­IEC 60755 - IEC 60947-2 Annex M

Free voltage, not isolated

Rated current: 0,25 Ac.a.
Rated voltage: 230 Vc.a.
Rated Load: 62,5 V·A

Protected by varistor:
420 Vc.a. - 10 Ac.a.
Rated current: 5 Ac.a.
Rated voltage: 250 Vc.a.
Rated Load: 1.250 V·A

Peso / Wheight : 168

Technical Assistance Service (T.A.S)

If you have any doubts about the running of the equipment or any faults, contact the service staff.

Vial Sant Jordi s/n
08232 Viladecavalls (Bacelona) SPAIN

Tel: [phone]
Fax: [phone]
email: [e-mail]

Tripping delay

INS-SEL-0,02-0,1-0,2-0,3-0,4-0,5-0,75-1 by direct setting

3-5-10 by SETUP

.

DESCRIPTION LED AND BUTTONS

Shows equipment status via a
display and 2 LED's. It has 5
button equipment setup and
setting and 2 button equipment to
do TEST and RESET.

- DELAY SE TTING

- SETUP ROTATION

- SENSIVITY SETTING

- outputs contacts SETTING.
(LOCKED SIGNAL)

- ENABLE/DISABLE

REC

SELF-RECLOSING SYSTEM

INDICATION BY LED AND DISPLAY

MAIN TRIP RELAY LED and display signals a

- .

change of status by changing from green to red.
Display event type messages or values

PREALARM SIGNAL. The LED green is blinking

-

betwen green and red.

BETWEN RECLOSURES. LED is blinking

-

LOCKED BY RECLOSURES. The yellow LED is

-

fixed. The equipment arrives al maximun number of reclosures established by the self-reclosing
sequence. Red display shows the cause.

No OF RECLOSURES. By short press on the display shows the number of reclosures by earth

-

leakage faults, partial and total number. The partial number are floating pages. In these pages
it can configure the self-reclosing sequence by press button.

REC

REC

Tripping cause

Test
Remote signal trip/reclose

.

Earth leakage fault

Others MESSAGES by display

Enter setting values

SAVE

Exits setting mode

EXIT

Value reading off scale

OVR

- GREEN led: ON

- RED led, tripped by fault.

- blinking led: pre-alarm

R

- Reclosures led:
fix, maximun reclosures
blinking, betwen reclosures

- RESET Button

- TEST Button

- SETUP settings

- change PAGES

Message display

TESt
EXT
DIF / value

RECLOSING THE EQUIPMENT.

TRIP LOCKED BY RECLOSURES

- BY

Automatic (earth leakage fault or manual). Is shown on display

1. .

2. Manual reclose by pushing button RESET.

External reclose sytem by remote or communications signal. When it forces a trip by remote

3.

signal, only it can reclose by another remote signal. In the case 2 and 3 the partial counters

of reclosures returns to a zero.

The relay only self-recloses after a trip by earth leakage current fault. The Test (red button) only verifies the relay trips
the protection. It recloses only by manual pressing RESET button.

MAIN RELAY PARAMETER SETTING

SETTING TRIP DELAY The message and two values appear on the screen after

- , t .

pressing the button. The lowest value indicates the current set value and the highest is the
values to be configured which are displayed by pressing The selected value to be saved is
displayed by showing the message

SENSITIVITY SETTING The same operation as above setting is carried out by pressing

- , I . I .

- SIGNALLING CONTACTS RELAY STATE, std/+ . Select the default position of the relay contacts

4-5-6 that indicates the situation of locked by reclosures of the device . In (Std) 4-6 NO / 4-5 NC
and (+) 4-5 NC / 4-6 NO and appears the symbol in display .

- SELF-RECLOSING SYSTEM, REC. In reclosure partial numbers by press REC button we

configure the self-reclosing sequence referred at the page which it’s showing us. By default is
configured nº10 by earth leakage protection and nº5 by shortcircuit/overload fault.

SREC No RECLOSURES TIME SEQUENCES RESET TIME

0
1 6 8, 16, 30, 59, 115 y 224 s 15 minutes
2 30 20, 40 s y 5 min. to the end. 15 minutes
3 8 30 s, 1, 2, 3, 4, 5, 6 y 7 min 15 minutes
4 6 10, 20, 30, 60, 130 y 600 s 15 minutes
5 6 2, 4 y 8 min. to the end. 15 minutes
6 7 30 s, 1, 2, 3, 4, 8 y 16 min 30 minutes
7 10 1 min 30 minutes
8 10 90 s 30 minutes
9 8 2, 4 y 6 min. To the end. 15 minutes
10 10 3 min 30 minutes
11 7 2, 4, 8, 16, 32, 32 y 32 min 15 minutes

12 31 2, 4 y 6 min. to the end. 60 minutes
13 3 2, 4 y 8 min 15 minutes
14 (empty) Empty space for personalized secuence ...

t

d

DISABLED

RECLOSE SEQUENCE BY SHORTCIRCUIT/OVERLOAD FAULT

SREC No RECLOSURES TIME SEQUENCES RESET TIME

0
1 2 1 min 30 minutes
2 2 1 min 60 minutes
3 2 90 s 30 minutos
4 2 90 s 60 minutes
5 2 3 min 30 minutes
6 2 30 min 30 minutes
7 6 30 min 30 minutes
8 (empty) Empty space for personalized secuence

In the case that it is disabled the two secuences types disappear

The relay only self-recloses after a trip by earth leakage current fault and by shortcircuit/overload fault. The Test
(red button) only verifies the relay trips the protection. It recloses only by manual pressing RESET button.

SETUP ADJUSTEMNT

PROG

With the button the submenus are browsed and with the button the values to
be selected are displayed to enter the value. The equipment configures
the value by displaying on the display and then exits Setting Mode. If the keypad
remains inactive for a certain time, the equipment automatically exits Setting Mode and
displays without changing the setting

“EXIT” . In the submenu TRIP ( circuir breaker ), Cb for

shortcirucuit/overlaod without coil and SC/UC with coil.

PROG

d

SAVE.

d d

PROG

PROG

. Press

“SAVE”

REC

¡ IMPORTANT !

( t , I and std/+ )

d d

DISABLED

¡ IMPORTANT !

.

+

REC

M98232601-03-14A

WRU-10 MT Electronic Earth-leakage Protection Relay

Button PROG

FREC

LIM

Pre-alarm current %

ALAR

Delay pre-alarm seg.

Contact NO/NC

SP

AU

Reconectable

RSTC

TRIP

50 Hz
60 Hz

10 s, 30 A

1 s, 3 A

OFF

I

d

t

d

50
60
70
80
MAIN
0,02
0,1
0,2
0,3
0,4
0,75
1
3
NO
YES
AUTO
MANU
NO
YES
Cb
SC
UC

- FREQ, (50) frecuency (Hz)

- LIM,(1s, 3A), range of values (Id / td)

- ALAR, pre-alarm.
. Id ( OFF), It’is not pre-alarm.
. Td ( 20 ms), time.
. SP (NO),contact states.
3-4 [NA/NC]
.AU (AutO), Relay reclaim the state.

- RSTC, (NO), Reset the partial reclosures.

- TRIP, (Cb), Motorized circuit breaker.

Button

Earth leakage protection and self-reclosing
system by means of external breaking element
asociated to output contacts 9-10-11-12.

MOTORIZED CIRCUIT
BREAKERS:

- WITH COIL

- WITHOUT COIL

Default values in SETUP

SUBMENUS SP(ALAR) and AU(ALAR) are disabled when trip with coil are activated.

MENU SETUP

PROG

mA

mS

t

d

PROG

mS

t

t

d

d

PROG

mS

PROG

mS

PROG

mA

mA

PROG

mA

mA

PROG

mA

mA

PROG

mA

PROG

mA

mS

t

d

PROG

mS

PROG

mS

t

d

PROG

mS

PROG

mS

t

d

PROG

mS

PROG

mS

PROG

mA

mA

mA

mA

PROG

mA

mA

mA

mA

PROG

%

mA

mA

mA

mA

PROG

mA

DIMENSIONES

mA

mS

mA

REC

GUARDA CAMBIOS

SAVE CHANGES

SALIR SETUP

EXIT SETUP

PROG

mA

mS

mS

mA

t

d

PROG

mA

mS

mS

mA

mA

mS

mA

REC

PROG

PROG

mS

t

d

PROG

mS

CONNECTION WRU-10MT + MT- 62/64

L3

NL1 L2

C1

U>

C2

MT - C- 62/64

11

L

N

M

12

O

I

- C- 62/64 + F6
MT

External
ON/OFF

2

1

WRU-10 MT

MENU SETUP

7

8

230 Vac

LOAD

Without trip coil

SETTING SETUP

TRIP:

3

Alarms

Id

Reset

Test

9

4

5

11

10

R

6

12

Protection relay
with self-reclosing

External
ON/OFF

2

1

MENU SETUP

7

8

230 Vac

LOAD

With trip coil
Shunt coil, TRIP SC
Undervoltage coil, TRIP UC

INStantaneous Protection, 30 mA
only with shunt coil.

SETTING SETUP

TRIP:

mA

PROG

mA

mA

mA

PROG

mA

mS

PROG

mA

t

d

PROG

mA

mS

mA

REC

SELF-RECLOSING SEQUENCES CONFIGURATION

L3

NL1 L2

L

N

M

O

I

Alarm

R

6

4

3

5

Reset

Test

WRU-10 MT

11

9

12

10

Protection relay
with self-reclosing
SETUP: TRIP Sh

Shunt coil
Undervoltage coil

mA

mS

mA

11

12

t

d

PROG

mA

mS

mA

PROG

mA

mS

PROG

mA

PROG

mA

mS

PROG

mA

PROG

REC

BY EARTH LEAKAGE FAUL

T

REC

PLUG IN
CONNECTORS

ACCESSORIES

T

t

d

t

d

t

d

PROG

mA

mS

t

d

PROG

mS

PROG

mA

mA

PROG

mA

PROG PROG

BY SHORTCIRCUIT/OVERLOAD FAUL

REC

REC

M98232601-03-14A