RRGGUU –– 1100 // RRGGUU –– 1100CC
EElleeccttrroonniicc eeaarrtthh lleeaakkaaggee pprrootteeccttiioonn
rreellaayy
User manual
Extended version
M 982 032 01 / 03 / 06 A
© CIRCUTOR, S.A.
RRGGUU--1100 // RRGGUU--1100CC eelleeccttrroonniicc eeaarrtthh lleeaakkaaggee pprrootteeccttiioonn rreellaayy
Page 2
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
RRGGUU--1100 // RRGGUU--1100CC eelleeccttrroonniicc eeaarrtthh lleeaakkaaggee pprrootteeccttiioonn rreellaayy
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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
RRGGUU--1100 // RRGGUU--1100CC eelleeccttrroonniicc eeaarrtthh lleeaakkaaggee pprrootteeccttiioonn rreellaayy
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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
RRGGUU--1100 // RRGGUU--1100CC eelleeccttrroonniicc eeaarrtthh lleeaakkaaggee pprrootteeccttiioonn rreellaayy
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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
RRGGUU--1100 // RRGGUU--1100CC eelleeccttrroonniicc eeaarrtthh lleeaakkaaggee pprrootteeccttiioonn rreellaayy
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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 V
ac
± 20%
- Frequency : 50-60 Hz
- Terminals 10-11 : A1-A2
- Burden : 6 VA
Special Version:
- Power supply : 24...230 V
ac
// 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 A
ac
- Rated voltage/Maximum switching voltage : 230 V
ac
- Rated load in AC : 2,500 V·A
- Contacts protected by varistor : 275 V
ac
- Mechanical useful life : 10·10
6
- 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 V
ac
± 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.
RRGGUU--1100 // RRGGUU--1100CC eelleeccttrroonniicc eeaarrtthh lleeaakkaaggee pprrootteeccttiioonn rreellaayy
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Connection diagram features
The connection for the equipment using 0.5 mm2 diameter 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
3
4 Output common contact pre-alarm
5 NC output contact pre-alarm
6 NA output contact pre-alarm
7
8 Toroid current input 1S1
9 Toroid current input 1S2
10 Power supply voltage input A1
11 Power supply voltage input A2
12
13 NA output contact trip
14 NC output contact trip
15 Output common contact trip
Note: Terminals 3, 7 and 12 are free.
RRGGUU--1100 // RRGGUU--1100CC eelleeccttrroonniicc eeaarrtthh lleeaakkaaggee pprrootteeccttiioonn rreellaayy
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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 V
ac
400 Vac power
supply
RRGGUU--1100 // RRGGUU--1100CC eelleeccttrroonniicc eeaarrtthh lleeaakkaaggee pprrootteeccttiioonn rreellaayy
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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 V
ac
400 Vac power
supply
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