Aegis
ring main unit
Disclaimer
Lucy Switchgear has a policy of continuous research and
development and accordingly reserves the right to change the
design and specification of its products without prior notice.
Lucy Switchgear worldwide offices
Lucy Middle East FZE
PO Box 17335, Jebel Ali, Dubai,
United Arab Emirates
Tel: +97 148 129 999
Fax: +97 148 129 900
Email: salesme@lucyswitchgear.com
Lucy Switchgear Ltd.
Howland Road, Thame, Oxfordshire,
OX9 3UJ, United Kingdom
Tel: +44 1844 267 267 General
Tel: +44 1844 267 222 Sales
Fax: +44 1844 267 223
Email: salesuk@lucyswitchgear.com
Lucy Switchgear Arabia Co. Ltd.
Novotel Business Centre,
P.O. Box 35340, Dammam 31488,
Saudi Arabia
Tel: +966 3 8147 910
Fax: +966 3 8147 914
Email: salessa@lucyswitchgear.com
Lucy Asia Pacific Sdn Bhd
L13A-03-03A, PJX-HM Shah Tower,
No16A Jalan Persiaran Barat,
46050 Petaling Jaya, Selangor, Malaysia
Tel: +603 74910700
Fax: +603 79316923
Email: salesmy@lucyswitchgear.com
Lucy Switchgear (South Africa)
Unit 2, Cranberry Industrial Park, Cranberry Street
Laser Park, Honeydew, 2170, South Africa
Tel: +27 11 025 7490
Fax: +27 11 794 3277
Email: salesza@lucyswitchgear.com
Lucy Electric (Beijing) Co. Ltd.
卢西电器（北京）有限公司
北京市朝阳区东三环北路霞光里
18号佳程广场A座1122室
邮编: 100027
电话: +86 1059 231 176
传真: +86 1059 231 177
电子邮件: salescn@lucyswitchgear.com
Postal Address:
P.O. Box 1078, Honeydew, 2040
To find out more about us, visit:
www.lucyswitchgear.com
LSAEG0214
providing intelligent solutions
Why Aegis?
•
Contents
Cost effective
Introduction to Lucy Switchgear
4
Product panorama: Lucy medium voltage and high voltage range
5
•
Safe
Introduction to Aegis
6
Installation and operating conditions
7
•
Maintenance free
Safety features
8
Application examples
9
•
Simple operation
Aegis range presentation
10
Available configuration
12
•
Easy to install
Standards
12
Product characteristics
13
•
Climate independent
General
13
•
Automation ready
Product presentation
User interface and interlocking mechanism
L: LBS Load Break Switch
Standard features
Optional features, factory fitted
Optional features also available as retrofit
Circuit Breaker; T or V modules
14
15
Standard features
Optional features, factory fitted
Optional features also available as retrofit
Circuit breaker protection
16
TLF
Protection relays
Protection CT (Current transformers) for TLF and relays
Options and accessories
19
Secondary injection
Actuators (motorised)
Cable compartment
Shunt trip coils
Earth Fault Indicators (EFI)
Air metering unit
20
Switchgear automation
21
Cable bushings and cable terminations
22
Technical data sheet
23
Dimensions
24
Order form
26
To find out more about us, visit:
www.lucyswitchgear.com
Page 3
Introduction to Lucy Switchgear
Lucy Switchgear is a global leader in switching,
protection and automation solutions for
electrical distribution systems, with over 100
years’ industry experience. Today the company is
a specialist in secondary power distribution,
engineering high-performance medium voltage
switchgear for utility, industrial and commercial
applications, overhead line equipment and
providing retrofit and automation solutions to
customers internationally.
Engineering excellence, based on a long tradition of expertise,
coupled with state of the art technology to meet customers’
stringent specifications, make Lucy Switchgear one of the few
companies that can offer truly bespoke solutions. We have the
capability to manufacture units for any location, climate or situation
Product panorama: Lucy medium
voltage and high voltage range
and offers a complete product portfolio, with a wide scope of
services and dedicated after sales support throughout the
product lifecycle.
A specialist UK research and development facility, with a continuous
programme of R&D, ensures that Lucy Switchgear’s products are
always at the cutting edge, designed to anticipate the evolving
technical and market demands of our customers. And our
multi-million pound, purpose built, state of the art UK
manufacturing facility provides complete control over production.
Lucy Switchgear is a truly international company with offices in
China, Dubai, Malaysia and South Africa; manufacturing facilities in
the United Arab Emirates, Saudi Arabia and India; and an established
global network of industrial partners and contractors operating in
over 50 countries worldwide.
Rated
voltage
(up to)
Mode of
fault current
interruption
Insulation
medium
Rated
current
(up to)
Mounting
Installation
condition
Operation
Aegis
24kV
Vacuum
SF6
630A
Ground /
Transformer
Indoor /
Outdoor
Local /
Remote
Sabre
24kV
Vacuum
SF6
630A
Ground /
Transformer
Indoor /
Outdoor
Local /
Remote
Scimitar
17.5kV
Fuse
SF6
630A
Ground /
Transformer
Indoor /
Outdoor
Local /
Remote
Trident
15.5kV
Fuse
Oil
630A
Ground /
Transformer
Indoor /
Outdoor
Local /
Remote
Rapier DSB
145kV
-
Air
2500A
Structure
Outdoor
Local /
Remote
Rapier GX
38V
-
SF6
630A
Pole
Outdoor
Local /
Remote
Rapier AX
36kV
-
Air
800A
Pole
Outdoor
Local /
Remote
Ring main units
Ring main unit range evolution
Trident
Switch disconnectors
Scimitar
Sabre
Aegis
1965
Page 4
1970
1975
1980
1985
1990
1995
2000
2005
2010
2015
Page 5
Introduction to Aegis
Aegis is a new generation of Ring Main Units
mainly designed for secondary distribution
networks up to 24kV. This range is available
in indoor and outdoor formats to suit various
application needs. All the live parts and switching
functions are insulated with SF6 gas and sealed
in a stainless steel tank ensuring a high level
of reliability, personnel safety and virtually
maintenance free operation.
The structural tank welding is performed by a robotic welding
process ensuring high reliability with a product life expectancy of
more than 30 years. The housing is fully treated using zinc coated
steel and electro statically applied, oven cured paint to resist
degradation from pollution and harsh climatic conditions.
The transformer protection is by Vacuum Circuit Breaker. On
request, the units can be supplied with integrated automation for
remote monitoring and control functions.
Installation and operating conditions
Characteristics:
•
12kV, 17.5kV and 24kV ratings
•
Extensible and non extensible range with up to
4 switching functions in a single tank
•
Hermetically sealed stainless steel tank insensitive
to environment
•
Intuitive single line mimic diagram for simple and
safe operation
• Vacuum Circuit Breaker enclosed in an SF6 insulated tank
for extra protection against corrosion and pollution
•
Provision for motor actuators for remote operation
and control
•
Integrated cable testing facility on front face
eliminating the need for cable disconnection
•
Suitable for indoor and outdoor applications
•
Various protection options (TLF, relays) to suit
customer needs
•
Low roof height designed for kiosks and
mini substations
•
Easy integration with SCADA network for remote
operation and control
•
Standard RAL7032 paint finish with other colours
available on request
IP54
Outdoor metal clad non extensible units only
i.
Indoor and outdoor type units
ii.
Ambient temperature for operation without derating:
40°C (for higher temperature applications please refer to
temperature derating curve below)
IP41
Indoor extensible and non extensible
Temperature De-rating Curves
630A at 40°C
700
iii. Average value over 24 hours max: 40°C
v.
Insulation medium: SF6 Gas
vi. Rated pressure at +20°C: 0.03 MPa
vii. Interruption medium: vacuum
*
F or higher altitude applications please contact local
Lucy Switchgear sales office.
650
Rated Current (Amps)
iv. M
aximum altitude for operation without derating:
1000m (above sea level)*
600
550
500
450
400
350
300
40
45
50
55
60
65
Ambient Temperature ° C
Page 6
Page 7
Safety features
Operation mechanism
Earth and test facility
T he mechanism consists of one operating shaft and one selector. The
operating shaft is used for switching ON / OFF (Mains or Earth) and
the selector is used for selection of the Mains or Earth positions. It is
impossible to simultaneously close the Load Break Switch or Circuit
Breaker and the Earth switch.
The cable earth and test facility is an optional feature on the Load
Break Switch and the Circuit Breaker. It is located at the front of
the unit for ease of access. It is used for testing cable insulation
and to locate faults in the circuit without the need to remove the
main cables from the cable compartment, which improves the
operator safety.
The mechanism incorporates mechanical interlocks and padlocking
facilities to improve operator safety.
The cable test access cover is fully interlocked and cannot be opened
until the Load Break Switch or Circuit Breaker Switch is in Earth ON
position. The test bushings are earthed with a star bar which has to
be removed for cable tests.
Earth bar in cable compartment
VPIS
A fully rated copper earth bar is mounted inside the cable
compartment. This earth bar is used to connect the screened cable
connectors through M12 size bolts. The bar runs through the
width of the unit and protrudes 125mm to the rear of the cable
compartment or connection to the main earthing system. For
additional safety it is not possible to remove it while unit is live.
VPIS (Voltage Presence Indication System) is an optional feature in
the Aegis range. It is used for checking the presence of voltages in
the cables. The VPIS gets a voltage signal through the voltage divider
built into the cable bushings. They can also be fitted with neon lights
and momentary latching push buttons to show voltage presence
without needing external testing probes.

Two types of voltage presence indication device are offered:
•
Pfisterer sockets
•
Neon indicators with push-to-test buttons and phase
comparator sockets
Pfisterer sockets
Anti reflex mechanism:
Ensures a time delay between switching operations to allow
sufficient time for the main breaker to trip and clear a fault.
Internal Arc withstand
Aegis SF6 Gas insulated stainless steel tanks are fully internal arc
rated and this feature is also available on the cable compartment
(optional) to ensure maximum operator safety in the event of
internal faults. As standard, all the tanks are rated for AF (operator
safety from the front of the unit) and there is an option to request for
AFL (front and side) and AFLR (front, side and back of the unit).
For more details on IAC ratings, please refer to the technical data
sheet on page 20.
Cable compartment
The cable compartments are located at the front of the units with
horizontal mounted DIN 400 type C bushings for ease of cable
connection. Vacuum Circuit Breaker function has factory mounted
protection CT (current transformers) on the cable bushings for ease
of installation and to avoid any potential damage to CT during
transit and connections.
F or enhanced operator safety, the cable compartments are earthed
and fully interlocked allowing access to the operator only if the
function is in Earth ON position.
There is an option of supplying these cable compartments with
Internal Arc rating as per IEC standards.
Neon indicator with
push-to-test buttons
Application examples
The key areas of application are:
Energy
i. Generation: wind power, solar power
ii.Distribution: compact substations
Infrastructure: tunnels, airports, ports,
underground railway stations
Commercial buildings: hospitals,
shopping centres, hotels, office
buildings, data centres
Industries: water and waste water,
mining, minerals, automotive, iron
and steel, paper and pulp, cement
and petroleum
Page 8
Page 9
Aegis range presentation
The Aegis range is available in four configurations, ranging from 1 function to 4 functions, as shown below.
Functions available:
SW: Switching functions:
L: LBS - 12kV/15.5kV : 630A
- 17.5kV: 400A
- 24kV: 400A
CB: Circuit breaker functions:
Metering functions:
V: VCB - 12kV/15.5kV: 630A
T: VCB - 12kV/15.5kV: 250A
- 17.5kV: 250A
- 24kV: 400A
M1: Busbar metering
Non extensible: (12kV/15.5kV, 17.5kV and 24kV)
This range has 3 and 4 functions insulated by SF6 gas in a single
hermetically sealed stainless steel tank. This solution is available in
indoor (IP41) and outdoor (IP54) versions and is perfectly suitable
for integration into compact substations to form standard ring main
secondary networks with transformer protection.
Extensible: (12kV/15.5kV only)
The extensible range is used to add another function on the left,
right or both sides of switchgear installed in secondary networks.
This range has 1,2,3 and 4 functions insulated by SF6 gas in a single
hermetically sealed stainless steel tank. It is an ideal solution if
additional functions are needed in the present or foreseeable future.
Available in indoor (IP41), these units can be easily extended in any
combination on site without specific tooling or floor preparation,
and without the need to transfer SF6 gas.
- 17.5kV: 630A
The units are extended as shown in these diagrams:
1-function
2-functions
3-functions
Busbar extension system
Extension bushings
4-functions
Page 10
Page 11
Available configuration
Product characteristics
General
Non extensible (compact range)
Extensible range
Positions of the functions in the unit
Types of functions
Product presentation
Positions of the functions in the unit
1
EFI
2
Pressure indicator
1
5
1st
2nd
3rd
4th
1st
2nd
3rd
4th
3
Marshalling Box
L
L
L
L
L
L
L
L
4
Optional VPIS
T
T
T
T
T
T
T
T
5
Earth and Test Facility
V
V
V
V
V
V
V
V
6
Protection Relay
7
'Push To Trip' Button
8
Circuit Breaker Indication
9
Interlocked Cable Box Cover
3 functions unit
10
Disconnector Indication
4 functions unit
11
Cable Test and Cable Box Interlock
12
Disconnector Operation Collar
13
Operation Collar
14
Switch Indication
15
Operating Handle
Types of functions
3 functions unit
1 function unit
4 functions unit
2 functions unit
All of the extensible units are available in the following
extensibility functions:
•
Left hand
•
Right hand
•
Both sides
3
2
4
6
10
7
8
14
13
11
12
9
15
User interface and interlocking mechanism
Safety interlocking
Standards
E ach LBS and VCB module has safety interlocked access via a rotary knob on the fascia to enable access to the cable connection compartment and
also the cable test access panel (if specified as an option) located on the fascia.
Operating handle access shafts have the facility for individual padlocks.
Load Break Switch
Circuit Breaker
International Standards
IEC 62271-1
IEC 62271-100
IEC 62271-102
IEC 62271-103
IEC 62271-200
Position
Load
Break
Switch
ON
OFF
OFF
Earth ON
Page 12
Interlock status
Selector
Main
Main
Earth
Earth
Cable
compartment
interlock
Locked
Locked
Locked
Unlocked
Earth & Test
interlock
(if fitted)
Locked
Locked
Locked
Unlocked
Position
Interlock status
Circuit
Breaker
Selector
ON
OFF (Tripped)
OFF (Reset)
Earth ON
Earth ON
OFF (Tripped)
Main
Main
Earth
Earth
Earth
Earth
Cable
compartment
interlock
Locked
Locked
Locked
Unlocked
Locked
Locked
Earth & Test
interlock
(if fitted)
Locked
Locked
Locked
Unlocked
Locked
Locked
Page 13
Product characteristics
Product characteristics
Switching functions L: LBS load break switch
Circuit breaker: T or V modules
Standard features
Optional features, factory fitted
•
T hree positions (ON, OFF & Earth), spring loaded mechanism,
independent manual operation
•
S ingle mechanism with two independent operating shafts, one
for switch ON / OFF position and another for selecting in Mains
and Earth operation
•
Remote low gas pressure alarm,1N/O (only one per tank)
•
VPIS – Voltage Presence Indication System
T module 250A and 400A rated vacuum circuit
breakers for transformer protection.
V module: 630A rated vacuum circuit breaker for
transformer / downstream network protection.
•
Remote switch position indicator
•
•
Interlocked selector, locked from operation when
switch is in ON position
•
Single line intuitive mimic diagram with clear indication to show
the status of switch (ON, OFF or Earth positions)
•
as pressure indicator with Red and Green sectors to indicate
G
minimum permissible pressure for safe operation (only one
per tank)
•
•
•
Horizontal cable terminations in front with DIN400
type C bushings
Internal arc rating of cable compartment for
additional safety
(1N/O,1N/C and 2N/O,2NC)
•
Fully interlocked cable earth and test (E&T) facility
without removing main cable connections
•
Short circuit and Earth Fault Current Indicators (EFI)
•
•
Internal arc rating of cable compartment for additional safety
•
Remote low gas pressure alarm,1N/O (only one per tank)
•
VPIS – Voltage Presence Indication System
•
Remote circuit breaker position indicator
(1N/O,1N/C and 2N/O,2NC)
•
Fully interlocked cable test facility without the need to
remove main cable connections (refer to cable test facility
for further information)
•
Self-powered relay for protection (customer specific)
•
TLF (Time Limit Fuses) for alternative protection
Interlocked disconnector selector, locked from
operation when circuit breaker is in ON position
•
Wide range of Current transformers for TLF and Relay protection
•
Shunt trip coils for external tripping
•
Wiring for motorisation
Standard features
•
T hree functions (ON, OFF & Earth), two position spring loaded
mechanism, independent manual operation
•
Single mechanism with two independent operating shafts, one
for circuit breaker ON/OFF position and another for selecting
disconnector in Mains or Earth (isolation)
Wiring for motorisation
•
Optional features, factory fitted
Optional features also available as retrofit
•
Mechanical push-to-trip button for local operation
F ully interlocked cable compartment allowing entry
only if function is in Earth ON position
•
•
Trip coil for receiving tripping signal from relay or TLF devices
P adlock facility (8.5mm diameter hole) for all the
operating positions
•
•
Protection function TLF or relay (customer specific)
Optional features also available as retrofit
•
S ingle line intuitive mimic diagram with clear indication to show
the status of switch (ON, OFF or Earth positions)
•
Motor operation for CB (only if unit is pre wired
for motorisation)
•
Gas pressure indicator with Red and Green sectors to indicate
minimum permissible pressure for safe operation (only one
per tank)
•
Wide range of cable clamps, and glands to accommodate 1 and
3 core cables (refer to cable compartment section on page 17
for further information)
•
Horizontal cable terminations at front of unit with DIN 400 C
type bushings
•
Protection CT (current transformers) mounted on
cable bushings (customer specific)
•
Fully interlocked cable compartment allowing entry
only if function is in Earth ON position
•
Padlock facility (8.5mm diameter hole) for all the
operating positions
Page 14
otor operation for Load Break Switch (only if unit is pre wired
M
for motorisation)
ide range of cable clamps, and glands to accommodate 1 and
W
3 core cables (refer to cable compartment section on page 17
for further information)
Page 15
Product characteristics
Circuit breaker protection
Two types of protection devices are offered to protect the circuit breaker;
TLF : Time limit fuses
Protection relays
Recommended TLF settings
Transformer ratings (kVA)
200
315
500
Rated voltage (kV)
TLF
CT ratio
50/5
When utilised in conjunction with circuit breaker type ring main
units, time limit fuses (TLF) are a cost effective method of providing
fault protection for overcurrent and earth faults (optional) to
a transformer of 2000kVA or less. It is a recognised method
of protection and was developed to comply with EA 41-26
(now superseded by ENA TS 41-36) with fuse links in accordance
with ENA TS 12-6.
Earth fault setting =
25A
(instantaneous trip)
CT ratio
100/5
It should be noted that the TLF protection system is not a device for
limiting overload levels of individual transformers. It should be used
for fault protection only.
T he TLF system provides protection for overcurrent and earth
faults between the MV circuit breaker and the LV protection
device. The selected TLF rating should be such that it allows for
discrimination between the MV & LV devices. This will ensure
that the circuit breaker does not open for faults beyond the LV
distributorprotection device.
hen fitted with TLF, the ring main unit can also be configured
W
to enable tripping of the circuit breaker from remote devices
(Bukholtz, LV CB etc).
Earth fault setting =
30A
(instantaneous trip)
Fuse dimensions: Length 57mm x Diameter 13mm
800
1000
3.3
10A
6.6
5A
10A
15A
11
3A
5A
10A
15A
13.8
3A
5A
10A
15A
3A
5A
7.5A
5A
10A
15A
5A
7.5A
12.5A
15A
24
3.3
6.6
11
5A
7.5A
10A
12.5A
15A
5A
7.5A
10A
12.5A
15A
5A
5A
24
VCB with TLF
7.5A
Fuse switch
Similar
Approximate fuse replacement cost
$5
$50
2MVA*
1MVA
Maximum rated normal current
630A
200A
Physical size of fuses
Small
Large
No
Yes
LV side
HV side
Very small with multi ratio CT
Large
Maximum rating of transformer, can be protected
Possibility of some pollution while changing fuses causing PD and flash over issues
Fuse location inside the unit
TLF
2000
Advantage of vacuum circuit breaker with TLF over HV fuses
Overall cost of units
RMU
1600
13.8
Feature
Lucy Switchgear customers in Europe, the Middle East, Africa
and Asia are currently using TLF protection system within their
distribution networks.
1250
TLF fuse rating (A)
Range of fuses required for different rated transformers
*No issues with transfer current switching to IEC 62271-105, which minimizes the MVA rating
Transformer
Advantage of vacuum circuit breaker with TLF over protection relays
Feature
LV distribution
Panel
Installation cost of function
Protection relay
Low
High
Not required
As required
Not delay
Delay
Employee training on setting tripping curves
Not required
Required
Additional training on different manufacturer setting up procedure
Not required
Required
Auxiliary power source for operation
Delay in activation of trip function due to capacitor charging time lag
Page 16
VCB with TLF
Maintenance and repair cost
Low
High
Operating temperature limitations
None
Up to 70 °C
Range of fuses required for different rated transformers
Yes
Yes
Over current and earth fault protection
Yes
Yes
Page 17
Product characteristics
Product characteristics
Circuit breaker protection
Options and accessories
Protection relays
Manufacturer
The Aegis range can be fitted with self-powered relays for protecting
the transformer or downstream network from fault currents by
tripping the Circuit Breaker. These relays incorporate many advanced
features and have a variety of settings to provide discrimination
protection in networks. The self-powered feature eliminates reliance
on external power sources and increases the performance and
reliability of the protection function.
Range
To the right are the technical characteristics of the Woodward WIP1
relay, offered as a standard on the Aegis range (if ordered with relay
function). Other manufacturers’ relays can also be incorporated into
the units on request.
Woodward
WIP1
Functions
Phase overcurrent
•
Short circuit protection
•
Number of overcurrent elements
2
Earth overcurrent
•
Number of earth overcurrent elements
2
Characteristics
Display (measuring values and parameters)
•
Setting via buttons
•
Standard CT
1A
LED pickup
•
LED trip indicator
•
Flag indication output
•
Fault memory
•
Clock
•
Password protection
•
Electro impulse and relay contact output
•
Number of output relays
Protection CT (current transformers)
for TLF and relays
T he protection CT are used in conjunction with Relays or
TLF protection to protect a wide (kVA) range of distribution
transformers. A comprehensive range of CT (current transformers) is
available to suit varied application requirements.
Dual Ratio CT 100/50/Dual Ratio CT 200:100/-
3 C/O
Input remote tripping
•
Interface
O
RS 485 interface with pro open data protocol
O
Additional power supply
O
• Standard
contact our local sales office for more information.
Shunt trips are magnetic coils
and are used to trip circuit
breakers through local push
buttons, RTUs or additional
transformer protection devices.
Shunt trips are available in the
following voltages;
Actuators (motorised)
egis units are fitted with 24V DC
A
motors, which can be powered from
the Gemini remote terminal unit (RTU)
24V DC battery in the event of mains
AC supply failure.
•
DC voltage: 12V, 24V, 48V and 110V
•
AC voltages: 110V, 240V
•
Multiple voltage range: 24VDC – 240VAC
Cable compartment
E arth fault indicators (EFI) are used for rapid location and isolation
of faults on medium voltage networks in open loop ring main
networks. When the unit detects asymmetrical currents greater than
50A in the 3 phase cable an earth fault is indicated by means of a
flashing LED or mechanical flag.
Earthfault indicators (EFI)
ll the cable clamps, glands and cable
A
compartment sealing devices are available as retrofit options. Below
is the list of clamps available in metal (steel) and plastics.
•
Single 3 core cable
•
3 single core cables
Below is the list of EFIs available for the Aegis range.
An extensive range of additional
cable compartment clamps and
sealing devices are available on
request, please contact our local
sales office for more information.
Single 3 core cable
Manufacturer model:
3 single core cable
Suparule Sensorform
BLZ-50
BFZ-50
MFZ-50
Other manufacturers’ relays are also available on request,
please contact our local sales office for more information.
CFZ-50
CLZ-50
Features
Power source
3.6V lithium ½ AA 850mAH battery
110-240V a.c.
Voltage range
CT on current carrying phase
1 – 38kV
Trip current
50A
Primary indication
LED
Flashing duration
>1000 hrs
Mech-flag (RED)
-
-
Minimum fault duration
LED
Mech-flag (RED)
LED
10 hrs
-
10 hrs
2.5 cycles
Manual reset
Push button
Automatic timer reset
4 or 8 hrs selectable
10 secs after mains restore
Manual trip test
Push button
Operating temperature
-40°C to +80°C
Operating humidity
0-100% RH
Ingress protection
IP65
Current sensor diameter:
CT100: 100mm
•
•
•
•
•
•
CT150: 150mm
O
O
O
O
O
O
CT300: 300mm
O
O
O
O
O
O
Remote flashing LED indicator
O
O
O
O
O
O
Auxiliary relay, 1N/O latching
O
O
O
O
O
O
Key • Standard
Page 18
MLZ-50
O Option
Triple Ratio CT 150:100:50/-
An extensive range of additional CT’s are available on request, please
Shunt trip coils
S econdary injection is used to test the relays or TLF operation
without switching on the high voltage supply to the unit. A low
voltage is applied to the secondary side of the CT connection
(located in terminal box) to test the operation of the protection
devices at the time of commissioning and routine tests.
O
RS-485 interface with Modbus protocol
Key
Secondary injection
O Option
Other manufacturers’ EFIs are also available on request, please contact our local sales office for more information.
Page 19
Air metering unit
Switchgear automation
AMU features
The Gemini RTU is an advanced, highly flexible and ultra-efficient solution for remote
operation and control of electrical distribution networks. Enclosed in a stainless steel
casing for maximum protection, the Gemini RTU is designed to operate in the most
demanding environments.
•
Busbar metering with extensibility on both sides
•
17.5kV and 630A rating
•
Rated lighting impulse voltage (BIL) 95kV
•
Power frequency voltage 38kV
•
IP41 for indoor installation
•
DIN 400 type C bushings for busbar connection
•
20kA 1-3 sec IAC rating
•
The key features of the Gemini range are:
In addition to the features
opposite, remotely monitored
and controlled switchgear
provides significant benefits
to customers such as:
•
Embedded auto change over and auto sectionalising functions
•
Control and monitoring of up to 4 motorised functions
(switches or circuit breakers)
Ambient operation temperature -25 ˚C to 40 ˚C
•
Inbuilt earth and fault passage indicators
•
HV fuse protection for VT
•
Anti-condensation space heater (option)
Reduced time in diagnosing system anomalies as well
as locating and isolating faulty sections of network
•
Wide range of CT and VT
Advanced monitoring of current, voltage, battery condition,
temperature compensation, switching status, automatic cooling
system, gas pressure etc
•
•
•
Faster response time and quick network reconfiguration
•
F lexible communication through radio, RS232, RS485, packet
data network, GSM, GPRS, PSTN, Bluetooth, ethernet TCP/IP,
optical fibre and SMS messaging
•
Optimisation of asset management through the implementation
of customised automation schemes
•
Reduced operational cost associated with routine
network switching
•
Increased operator safety
Busbar metering
AMU low voltage compartment
•
Facility to lock and seal the terminal (marshaling) box
•
Advanced battery back to operate under mains AC input failure
•
Provision to disconnect and short circuit the CTs
•
•
DIN96 size KWH meter, ammeter and voltmeters
Fully tested to ENATS (Energy Network Association Technical
Standards), EMC and environmental standards
•
MCB/fuse protection for VT secondary side
Gemini RTU specification
Enclosure
General
Degree of protection
Operating temperature
Relative humidity
Method of mounting
Dimensions
Processor module
RTU hardware
Power supply
Battery type
Battery charger
Control electronics
Inner enclosure
Ventilation
Digital inputs
Inputs / outputs
Digital outputs
Analogue inputs
Expansion I/O module
Communication interfaces
Communications
Protocols
Communication media
Switchgear interface
Controls
Air metering unit
Indications
Software
Page 20
Cables
Configuration
Stainless steel
IP54
-25 to 60°C
Up to 95%
Floor, wall, pole or RMU switchgear
H 600mm, W 400mm, D 210mm
ARM9 microprocessor
110 / 230V AC supply – over and under-voltage protection
2 x 12V DC, sealed lead acid or high temperature NiMH
Temperature compensated, fully protected
PIC based processor with expandable I2C bus
Stainless steel
Microprocessor controlled, long life fan with baffle air intake filter
14 isolated digital inputs – expandable
8 isolated digital outputs – expandable
3 CT analogue inputs as standard (DIs reduced to 11)
3 AIs / 4 DIs; 7 DIs / 2 DOs
3 RS-232 for control (ethernet option), configuration and programming plus one expansion bus
DNP3, IEC 60870-5-101/104 and modbus (others on request)
RS-232 / 485, UHF / VHF radio, packet data, GSM / GPRS / EDGE, PTSN, leased or twisted pair lines,
optical fibre, ethernet (TCP/IP) and Bluetooth
Membrane push-button for open / close operations in conjunction with activate push-button up to four
switching functions (standard 1, 2, 3 or 4 switch control formats)
Selector control for off, local or remote modes
RTU services such as DC / AC supplies, dummy control and debug LEDs
Switch status LEDs for open / closed positions
Control Output LEDs (illuminates when active)
Configurable LED indications
Plug-in, multi-core umbilicals to switchgear
Windows-based software
• Protocol parameters including device and I/O addresses
for configuration of:
• Parameters for the communications device
• Parameters for digital, analogue and counter points
• Automation sequences
• Power saving routines
• Battery tests
Page 21
Cable bushings and cable terminations
Technical data sheet
The bushings for each ring switch and circuit
breakers are located at the front of the unit. All
sets of bushings are type ‘C’ with in-line bolted
connections M16 threaded in accordance with
General
Circuit breaker V and T function
Rated voltage
kV
12/15.5
17.5
24
Rated frequency
Hz
50
60
50
Rated lightning impulse withstand voltage
Rated normal current
V function
A
630
-
-
T function
A
250
250
400
400
EN50181.
Directly earthed
kV
95
95
125
Rated active load breaking current
A
630
250
The bushings are accessible by removing the interlocked cable
compartment covers at the front of the unit.
Across disconnector
kV
110
110
145
Rated short circuit breaking current
kA
20
21
20
Rated short circuit making current
kA
50
54.6
50
The maximum cable size that can be used is:
Directly earthed
kV
38
38
50
Rated cable charging breaking current
A
25
31.5
31.5
•
300mm² 3 - core
Across disconnector
kV
45
45
60
Rated short time withstand current
•
500mm² single - core.
Protection
Rated power frequency withstand voltage
The following types of terminations can be used with the Aegis:
Main electrical circuit
Tank with HV parts
IP
IP67
1 sec
kA
-
21
-
LV control box
IP
IP41
3 sec
kA
20
-
20
Front face + mechanism
IP
IP41
Earthing circuit
Cable box
IP
IP41
1 sec
kA
-
21
-
Mechanical impact protection
IK
IK07
3 sec
kA
20
-
20
Freestanding
kA 1 sec
21kA 1 Sec
Circuit breaker
M1/2000
Optional cable box
kA 1 sec
21kA 1 Sec
Earth switch
M0/1000
Internal arc rating
Mechanical endurance class
AF (gas chamber)
Standard
Electrical endurance class
AFL (gas chamber)
Optional
Circuit breaker
AFLR (gas chamber)
Optional
Earth switch
SF6 gas
Insulating bushing boot
Heat shrink insulating bushing boot
E2/2000
E1
Operating mechanism
Filled pressure
Bar (G)
0.4
0.4
0.5
Tripping time
Across disconnector
Bar (G)
0
0
0.3
Operating sequence for mechanism
Annual leakage rate
≥0.01% per annum
ms
°C
Maximum altitude (without derating)*
M
40
55
Motor / coil
55
Load break switch: L function
1000
Relative humidity (max) - over period of 24hrs
(IEC 62271-1, sub-clause 2.1)
>80
Hand lever / pushbutton
Remote: close / open
Ambient air temperature (without derating)
>80
0-3min-CO-3min-CO
Local: close / open
Installation conditions
>80
95%
* For higher altitude applications please contact local Lucy Switchgear sales office.
Profile 'C' bolted separable
Rated normal current
A
630
400
400
Rated active load breaking current
A
630
400
400
Rated short circuit making current
kA
50
54.6
50
Rated cable charging breaking current
A
10
10
16
1 sec
kA
-
21
-
3 sec
kA
20
-
20
Rated short time withstand current
Main electrical circuit
BusBars
Rated normal current
A
630
400
400
1 sec
kA
-
21
-
3 sec
kA
20
-
20
1 sec
kA
-
21
-
Rated peak withstand current
kA
50
54.6
50
3 sec
kA
20
-
20
Rated short time withstand current
Earthing circuit
Mechanical endurance class
Load break switch
M2/5000 M2/5000 M2/5000
Earth switch
M0/1000 M0/1000 M0/1000
Electrical endurance class short circuit making
Load break switch
E3-5
(times)
E1-2
(times)
E1-2
(times)
Earth switch
E3-5
(times)
E1-2
(times)
E1-2
(times)
Operating mechanism
Local: close / open
Remote: close / open
Page 22
Hand Lever
Motor
Page 23
Dimensions
Dimensions
Aegis ring main unit
Air metering unit
840mm
1235mm
617mm
967mm
1244mm
500mm
1-function
2-functions
3-functions
886mm
B
A
1650mm
50mm
4-functions
Cable Termination Height
(Distance between cable clamp and bushings)
Dim
A
Dim
B
450
1095
575
600
1245
727
800
1455
940
1: L function height is not affected with addition of E&T facility
2: For V & T functions with E&T facility add 150mm to overall height “A”of the unit
Page 24
Page 25
Aegis order form
To use this form, please photocopy and return the completed form to your nearest Lucy Switchgear office (addresses can be found on the back cover)
Name:
Company:
Address:
Tel no:
Optional features applicable to L (Load Break Switch) function only
Rated current (choose any one)
Fax no:
400 Amps
630 Amps
Email:
EFI (choose any one)
Order number:
BFZ-50
MFZ-50
Order quantity / number of units (please fill separate form for each type)
Extensibility (choose any one)
MLZ-50
Non extensible
Extensible
left hand
right hand
CFZ-50
both sides
CLZ-50
IP rating: Installation conditions (choose any one)
IP54 Metal clad outdoor (available for non extensible range only)
BLZ-50
IP41 Indoor (available for extensible and non extensible range)
Any other*
Colour RA L7032 as standard (other colours are only available on request)
Features common to all functions
Optional features applicable to V or T (Vacuum Circuit Breaker) function only
Voltage rating (choose any one)
12kV
Secondary injection (tick for each selected function, if needed)
15.5kV
Protection device (choose any one)
TLF (Time Limit Fuses)
17.5kV
WIP1
24kV
Low gas pressure alarm 1N/O (tick if needed, only one per tank)
Number of ways and functions needed at each position:
Starting from the left, write any one of L, V or T in each box depending upon the
number of ways needed.
Voltage range
Functions current ratings
Other*
Protection (CT) current transformer for TLF or Relay (choose any one)
Dual (Primary) Ratio CT 100:50/First
(e.g. 1 function)
Second
(e.g. 2 function)
Third
(e.g. 3 function)
Fourth
Dual (Primary) Ratio CT 200:100/-
(e.g. 4 function)
Triple (Primary) Ratio CT 150:100:50/-
12kV/15.5kV
17.5kV
24kV
L
630A
400A
400A
Manual Push To Trip button (tick for each selected function, if needed)
T
250A
250A
400A
Shunt Trips (choose any one)
V
630A
-
-
12V DC
24V DC
For example:
L
V
T
L
48V DC
Motor wiring (tick for each selected function, if needed)
110V DC
Motor for remote operation (tick for each selected function, if needed)
110V AC
Cable Earth & Test facility (E&T) (tick for each selected function, if needed)
Cable bushings termination height (choose any one)
240V AC
450
Multiple voltage (24V DC - 240VDC)
600
810
Cable box: Internal arc proof
VPIS (choose any one)
Neon indicator with push to test button
Pfisterer socket
Auxiliary switches (choose any one)
Note: The ring main units gas chamber are supplied with AFL (Front and sideways) rating.
If you require units with AFLR (Front, side and rear) ratings please contact our local sales office.
*Please fill the details in comment section below.
Comments
1N/O, 1N/C
2N/O, 2N/C
Cable compartment
Cable clamp material (choose any one)
Metal
Plastic
Cable entry type (choose any one)
3 single core cable
Single 3 core cable
Page 26
Page 27