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NumericalCheck SynchronisingProtection Relay
FeaturesArgus 7 is a combined check and system synchronising relay
which can automatically select check or system synchronise from
measurements of the relative phase angles between line and
bus voltages. The relay will prevent closure of the circuit breaker
if either the phase angle, slip frequency or the voltage magnitude
of the incoming and running voltages fall outside
prescribed limits.
If the parameters are within the limits the relay will issue an
output which can be used to close the circuit breaker directly or
in conjunction with an autoreclose scheme. Both the check and
system synchronise functions have independent settings andblocking features. The relay includes split system detection with
a variable time delay, which can be used for blocking purposes
within delayed autoreclose schemes.
Synchronising bypass logic is provided to connect a dead line
or bus to a live line or bus. For manual synchronising the relay
includes a circuit breaker close guard feature which is used to
prevent the control switch being held closed during a
synchronising operation. This feature is implemented using
internal logic and removes the need for an external relay.
Applications
Protection
Check synchronising (25) and system synchronising
Under voltage blocking (27)
Differential blocking
Control
The basic Argus 7 relay contains 4 programmable digital
(status) inputs with programmable pick-up and drop-off timers
The Argus 7 relay contains 7 programmable output
relays out of which 1 have CO contact 1 have NC contact
and 5 have NO contacts Configurable dead bus and/or dead line charge
Adjustable slip frequency, phase angle and time delay
Integrated manual close guard feature
Independent Check synchronising and system synchronising
settings
Description
Check synchronising (25) and system
synchronising
Numerical Check Synchronising Protection Relay - Argus 7
ARGUS 7
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Monitoring
Split system detection Storage of 500 time-tagged event records
Storage of 5 wave form records
Metering
Primary RMS voltage for both line & bus
Secondary RMS voltage for both line & bus
Frequency of both line & bus
Phase difference between line & bus
Frequency slip between line & bus
Phase - In/out limits
Slip - In/out limits
Line and bus health status (ie live and dead)
Voltage blocking element status
User Interface
Backlit liquid crystal alpha-numeric display with
16-characters, 2 lines
LEDs for check/system sync system split and
protection healthy
Push buttons for programming and resetting
Communication
Fibre optic communication port at rear
Data communication using IEC 60870-5-103 protocol
Wiring Diagram
Notes1. VT Connections are shown for phase-neutral,
phase-phase is also possible.
2. VT & Earth connections are typical only.
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VT Input Rating63.5/110V AC, 50/60Hz
SettingsVT ratio 1:1 to 9999:1
Check sync AUTO, MANUAL
Phase angle 5 to 90 1
Slip timer OFF, 0.1 to 100.0 sec 0.1 sec
Slip frequency OFF, 0 to 2.000Hz 0.005Hz
Dead voltage 5 to 127V 0.5V
Live voltage 10 to 132V 0.5V
Line undervoltage OFF, 22 to 132V 0.5V
Bus undervoltage OFF, 22 to 132V
0.5VDifferential
Voltage OFF, 0.5 to 44V 0.5V
Sync bypass OFF, DL&LB, LL&DB, DL&DB,
DL or DB, DL&/or DB
System split OFF, 90 to 175 1
Split timer OFF, 0.1 to 100.0 sec 0.1 sec
Manual close
guard function OFF/ON
System sync LOCKOUT, AUTO, MANUAL
Phase angle 5 to 90 1
Slip timer OFF, 0.1 to 100.0 sec 0.1 sec
Slip frequency OFF, 0 to 2.000Hz 0.005Hz
Close pulse 0.1 to 2 sec 0.1 sec
DC Auxiliary supplyNominal Operating range
24, 30, 48V 18-60V
110, 220V 88-280V
Output relays The Argus 7 relay contains 7 programmable output relays out
of which 1 have CO contact 1 have NC contact and 5 have
no contacts
Contact ratings
Carry continuously 5A AC or DCMake and carry 30A AC or DC for 0.2sec
Resistive break 75W DC, 1250VA AC
DC digital(status) inputThe Argus 7 relay contains 4 programmable digital (status) inputs
which have programmable pick-up and drop-off timers.
Nominal Operating Range
30 V DC 18 - 37.5V DC
48 V DC 37.5 - 60V DC
110/125 V DC 87.5 - 137.5 V DC
220/250 V DC 175 - 280 V DC
For relays to ESI48-4 standard and 110/125 or 220/250
Technical Information volt DC working a 48 volt digital (status) input is supplied for
use with external dropper resistors:110/125V Resistor 2K7 5% 2.5W
270/250V Resistor 8K2 5% 6.0W
BurdensAC < 0.2VA
DC 3W Quiescent (Typical)
10W maximum
Indications LEDs for check/system sync, system split and protection healthy
indications
LCD - alphanumeric display for settings, instruments and fault
data
EnvironmentalTemperature IEC 68-2-1/2
Operating range -10C to +55C
Storage range -25C to +70C
Humidity IEC 68-2-3
Vibration IEC 255-21-1 class I
Shock and bump IEC 255-21-2 class I
Seismic IEC 255-21-3 class I
Insulation IEC 255-5
2 KVrms for 1 min all terminals to earth.
2 KVrms for 1 min between independent circuits.
1 KVrms for 1 minute across NO contacts.
Transient overvoltage IEC 255-4 class III
5KV 1.2/50s between all terminals and earth without
damage or flashover.
High frequency disturbance IEC 255-22-1 class III
2.5KV common mode < 3% deviation
1.0KV series mode < 3% deviation
Electrostatic discharge IEC 255-22-2 class III
8KV direct without maloperation or damage
Radio frequency disturbance IEC 255-22-3
20MHz to 1GHz at 10V/m < 5% deviation
Fast transient IEC 255-22-4 class IV
4KV 5/50ns < 3% deviation
Mechanical ClassificationDurability 106 operations
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Auxiliary and digital (status) input voltage
Qualification
ISO 9001 - 2000
Cutout Details
Ordering Information
F A C T / A R G U S
7 / 1 2 -
0 5 / R E V
0
Case WeightArgus 7 - E4 3.15 kg
The policy of Easun Reyrolle is one of continuous improvement and development. The company therefore reserves the right to supply equipment, which may
differ slightly from that described and illustrated in this publication.
AUTOMATION DIVISION
Ashirwad, #25, 29th Main,4th B Cross, BTM Layout 2nd Stage,Bangalore-560 076, India.Tel: +91 80 26685496/51311405Fax: +91 80 26685446Email: [email protected]
HOSUR WORKS#98, Sipcot Industrial Complex,Hosur 635 126, India.Tel: +91 4344 401600/01/02Fax: +91 4344 276397
SWITCHGEAR WORKS
Ernavur,Chennai-600 057, India.Tel: +91 44 25733715/358Fax: +91 44 25733468Email: [email protected]
BANGALORE WORKS#17/3 Arakere,Bannerghatta Road,Bangalore-560 076, India.Tel: +91 80 26581023 / 3268Fax: +91 80 26580642Email: [email protected]
EXPORTS DIVISION
#17/3 Arakere,Bannerghatta Road,Bangalore-560 076, India.Tel: +91 80 26581023 / 3268Fax: +91 80 26580642Email: [email protected]
Sales Offices
MumbaiTel: +91 22 22022270/22855415Fax: +91 22 22825703Email: [email protected]
BangaloreTel: +91 80 26685496/51311405Fax: +91 22 26685446Email: [email protected]
BhopalTelefax: +91 755 2684221Email: [email protected]
DelhiTel: +91 11 25747321/25747322Fax: +91 11 25747320Email: [email protected]
ChennaiTel: +91 44 24346425/24347608Fax: +91 44 24346435Email: [email protected]
SecunderabadTelefax: +91 40 27817847Email: [email protected]
KolkataTel: +91 33 22848320Fax: +91 33 22848326Email: [email protected]
Corporate Office
Easun Reyrolle Limited. 98 Sipcot Industrial ComplexHosur 635 126 India. Tel: +91 4344 401600/01/02Fax: +91 4344 276397
www.easunreyrolle.com
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