Circutor RGU-10 Manuale utente

–

User manual

Extended version

M 982 032 01 / 03 / 06 A

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Checks on receipt.

This manual assists in the installation and use of the RGU-10/RGU-10C earth leakage relay so that the best possible

use can be gained from it. Please check the following points on receipt of the relay:

• The equipment delivered matches your order specifications.

• Check that the equipment has not been damaged during delivery.

• Check that it has the correct instruction manual.

This manual contains information and warnings about the RGU-10/RGU-10C which must be

followed to guarantee the proper operation of all instrument functions and to maintain it in a

safe condition.

Installing and maintenance for this relay must be carried out by a qualified person.

CONTENTS

General features ..........................………......………….......................................... page 4

Installation and start-up ...................................………...........…………............................ page 6

Connection diagram ………...........................................................…………............... page 9

Description. ……...................…………........................................................... page 16

Operation. …….................................................…………............................. page 18

Equipment settings. ……...............................................................…………............... page 21

Setting communication SETUP ......………..............…………...................................................... page 23

Setting measuring SETUP ...............………...................…………........................................ page 25

Menu diagrams for SETUP ………................................................………….......................... page 26

MODBUS Protocol …….................................................................…………............. page 27

MODBUS memory map ......………...............…………..................................................... page 27

RS485 Connections ……......................................…………........................................ page 29

Scada PowerStudio applications ……....................................................………….......................... page 30

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SMALL 3 MODULE SIZE

DIN RAIL

PANEL (ADAPTER ACCESSORY)

BACKLIT

LCD DISPLAY

GREEN Normal operation

status.

RED Trip status by fault or

other event.

INSTANT CURRENT

LEAKAGE DISPLAY

PRE-ALARM

RELAY

SENSITIVITY from 50 to

80%I∆N

DELAY from 20 ms to 10

seconds

OUTPUT RELAY

CONTACT STATUS

RS-485 MODBUS

COMMUNICATIONS

SETTING OF PARAMETERS

SENSITIVITY from 30 mA to

30 A

DELAY from 20 ms to 10

seconds

ASSOCIATED

BREAKING DEVICE

CONTACTOR. Connection by

undervoltage coil

EARTH LEAKAGE DEVICE

WITH TRIP COIL

TRIP COIL

· MINIMUM Voltage

· Current EMISSION

ASSOCIATED

MEASURING DEVICE

EARTH LEAKAGE TOROID.

WG/WGS FAMILY

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GENERAL FEATURES

The RGU-10 earth leakage relay is type A programmable electronic earth leakage protection equipment with two

independent relays 4, the main output for checking the cut off device and performing the protection function and the

pre-alarm relay for installation prevention and maintenance.

Allows the setting and adjustment of all parameters required for complete protection and maintenance checking in

the installation. A series of parameters may be set directly from the keypad (buttons) and by setting menus on the

instrument itself.

Before starting the earth leakage device carefully read sections: power supply, connection diagram and setting.

The RGU-10 measures, calculates and displays the earth leakage current in

three-phase, balanced or unbalanced industrial systems.

Measurements are in true effective value, via one earth leakage current input,

from the WG/WGS family external measuring toroid.

Under normal operating conditions the main values determining earth leakage

protection in an installation are shown on the display. These include sensitivity,

delay and instant current leakage.

Bearing in mind the high degree of protection required by installations, the equipment

has a display and LED indicators for the different events which usually occur.

Data displayed or pre-alarm indication, trips, leakage readings, etc. assist in providing

sufficient information for proper maintenance.

Under normal operating conditions the backlit display is green. However, after any

event causing a main relay to trip, the backlight is red, indicating the reason.

The version for RS485 communications and appropriate software allows

setting, data and information to centralised for the proper monitoring and

checking of the maintenance of electricity lines.

The measurement of earth leakage current from which the RGU-10/RGU-10C

operates by indicating the instant leakage current, pre-alarm or trip is

determined by the WG series earth leakage transformers. The inner diameter

of the transformer is defined by the installation's wiring dimensions.

EARTH LEAKAGE TRANSFORMERS, WG SERIES

Weight (g)

Useful

diameter

(mm)

Type Code

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MAIN FEATURES

 Measuring in true effective value (TRMS)

 Type A differential. IEC 61008.1

 Insulation against transients. IEC 61008.1

 High frequency filtering. IEC 61008.1

 Trip setting between 80 and 100% I∆N

 Inverse curve. IEC 61008.1

 Associated standard IEC 61008.1, IEC 38

Other features:

 3 modules. DIN rail. In a panel using front accessory, code M5ZZF1

 Displaying instant leakage values.

 Backlit LCD display.

 Built-in RS485 communications (Modbus RTU®). RGU-10C only

Available models:

RGU-10 SERIES

CODE

RGU-10 P11941

RGU-10C P11944

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INSTALLATION AND START-UP

This manual contains information and warnings about the RGU-10/RGU-10C which must be followed to guarantee

the proper operation of all instrument functions and to maintain it in a safe condition. The equipment must not be

switched on until it is finally connected to the electrical board.

IF THE EQUIPMENT IS HANDLED IN A WAY NOT SPECIFIED BY THE MANUFACTURER, THE EQUIPMENT'S

PROTECTION MAY BE COMPROMISED

When it is likely that the equipment has lost its protection (i.e. with visible damage), it must be disconnected from the

auxiliary supply. In this event, contact a qualified technical service representative.

INSTALLING THE EQUIPMENT

Check the following points before switching the equipment on:

 Power supply voltage.

 Operating conditions.

 Safety.

A. Power supply voltage:

 Standard version:

- Power supply : 230 Vac ±20%

- Frequency : 50-60 Hz

- Terminals 10-11 : A1-A2

- Burden: 6 VA

 Special Version:

- Power supply : 24...230 Vac // 400 Vac // 12...230 Vdc

- Frequency : 50-60 Hz

- Terminals 10-11 : A1-A2

B. Main/pre-alarm relay output switch contacts:

- Main output terminal contacts : 13-14-15

- NA output terminal : 13

- NC output terminal : 14

- Output common terminal : 15

- Pre-alarm output terminal contacts : 4-5-6

- NA output terminal : 6

- NC output terminal : 5

- Output common terminal : 4

- Material : AgCdO

- Rated current/Maximum instant current : 6 / 10 Aac

- Rated voltage/Maximum switching voltage : 230 Vac

- Rated load in AC : 2,500 V·A

- Contacts protected by varistor : 275 Vac

- Mechanical useful life : 10·106

- Ambient temperature range : - 40…+85 ºC

- Electrical useful life for AC loads Cut off power for DC loads

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C. External input for Trip/Rearm:

- Terminals : 1 – 2

- Type of input : Optocoupled

- Maximum voltage / Maximum power : 110 – 230 Vac ±20% / 0.7 W

D. Earth leakage current measurement circuit

Scale range Full scale Resolution display

30 mA 75 mA ±1 mA

300 mA 750 mA ±1 mA

3 A 7.5 A ±0.1 A

30 A 75 A ±1 A

E. Operating conditions:

- Operating temperature : -10 ºC / +50ºC

- Relative humidity : 5 to 95 % RH (without condensation)

- Altitude : up to 2,000 metres

F. Safety:

- Designed for category III installations, 300 Vac (EN 61010).

- Protection against electric shock by class II double insulation.

INSTALLATION AND MOUNTING

The equipment is installed on a DIN rail or on a panel (drilled panel 65+0.8 x 65+0.8 mm, according to DIN 43 700 using

accessory M5ZZF1). All connections must remain inside the electrical board.

Note that when the instrument is switched on, the terminals may be dangerous when touched and opening or

removing parts may access dangerous areas. Therefore, the equipment must not be used until it is properly

installed.

A 72x72 mm front adapter accessory is used to install the equipment on a panel. All connections must remain inside

the electrical board.

The front adapter accessory has a base, a frame two tabs and three

screws.

1. The base is mounted on top of the equipment.

2. The equipment is attached by screwing the holes in the

equipment on the upper right corner and lower left corner on the

front of equipment.

3. The front frame is attached to cover the mounting points.

4. Three green pressure tabs on the side runners of the base are

attached.

5. The equipment is mounted in the hole in the panel with the

adapter.

6. The tabs run towards the panel to obtain the mounting

pressure.

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Connection diagram features

The connection for the equipment using 0.5 mm2diameter cable.

Recommended tightening torque is 0.5-0.6 Nm.

Length of cable to strip 5-7 mm.

It is recommended that meshed cable is used to connect the toroid over large distances.

Terminal list

No. Terminal description

1 Voltage input ON/OFF external L

2 Voltage input ON/OFF external N

4 Output common contact pre-alarm

5 NC output contact pre-alarm

6 NA output contact pre-alarm

8 Toroid current input 1S1

9 Toroid current input 1S2

10 Power supply voltage input A1

11 Power supply voltage input A2

13 NA output contact trip

14 NC output contact trip

15 Output common contact trip

Note: Terminals 3, 7 and 12 are free.

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CONNECTION DIAGRAMS

RGU-10/RGU-10C connection with current emission coil. In the event of powering the equipment before the breaking

device (AUTOMATIC SWITCH) in an earth leakage trip situation because of a fault, test or toroid error:

1. Note the cause of the trip on the red display.

2. Reset the breaking device.

3. Press the RESET equipment.

Power supply from

24 to 230 Vac

400 Vac power

supply

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RGU-10/RGU-10C connection with current emission coil. The following has to be taken into consideration in the

event of powering equipment after the breaking device.

1. The breaking device has to be a manually resettable device.

2. After dripping, the equipment is disconnected losing all information on the reasons for the trip. The system is

reset only by resetting the breaking device. It is reconnected by the power supply.

Power supply from

24 to 230 Vac

400 Vac power

supply

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