Switchgears
High Voltage Switchgear
Switchgear with Horizontal Isolation Type AH12 (Single Busbar)
Type AH12 Air Insulated Switchgear Panels are equipped with horizontal drawout, horizontal isolation type switchgear device (VCB / VC) up to breaking capacity of 50kA.
TECHNICAL DATA FOR AH12
Voltage: Up to 15kV 50/60Hz
Unit Rating: Up to 3150A / 4000A
BusBar Rating: Up to 4000A
Short Time Current: Up to 50kA for 3second
P.F. Withstand: Up to 38kV
Impulse Withstand: Up to 95kVp
Internal Arc Classification: AFLR Up to 50kA - 1second
Applicable Standards: IEC 62271-200
Voltage: Up to 15kV 50/60Hz
Unit Rating: Up to 3150A / 4000A
BusBar Rating: Up to 4000A
Short Time Current: Up to 50kA for 3second
P.F. Withstand: Up to 38kV
Impulse Withstand: Up to 95kVp
Internal Arc Classification: AFLR Up to 50kA - 1second
Applicable Standards: IEC 62271-200
TECHNICAL DATA FOR VC
Rated Voltage: Up to 7.2kV
Rated Thermal Current: Up to 400A
Mechanism : Electrically latched / Mechanically latched
Utilization Category: AC4
Breaking Capacity : Up to 6kA 50kA (with fuse)
Rated Voltage: Up to 7.2kV
Rated Thermal Current: Up to 400A
Mechanism : Electrically latched / Mechanically latched
Utilization Category: AC4
Breaking Capacity : Up to 6kA 50kA (with fuse)
Switchgear with Horizontal Isolation Type AH12 (Double Busbar)
TECHNICAL DATA
Voltage: Up to 12kV, 50/60Hz
Unit Rating: Up to 3150A
BusBar Rating: Up to 4000A
Short Time Current: Up to 40kA for 3second
P.F. Withstand: Up to 38kV
Impulse Withstand: Up to 95kVp
Internal Arc Classification: AFLR Up to 40kA - 1second
Applicable Standards: IEC 62271-200
Voltage: Up to 12kV, 50/60Hz
Unit Rating: Up to 3150A
BusBar Rating: Up to 4000A
Short Time Current: Up to 40kA for 3second
P.F. Withstand: Up to 38kV
Impulse Withstand: Up to 95kVp
Internal Arc Classification: AFLR Up to 40kA - 1second
Applicable Standards: IEC 62271-200
Switchgear with SF6 Insulation and Vacuum Circuit Breaker Type AF36 (Single/Double Busbar)
TECHNICAL DATA
Voltage: Up to 36kV, 50/60Hz
Unit Rating: Up to 2500A
Breaking Capacity : Up to 40kA
BusBar Rating: Up to 2500A
Short Time Current: 25 kA - 3 Sec, 31.5 kA - 1 Sec, 40 kA - 1 Sec
P.F. Withstand: Up to 70kV
Impulse Withstand: Up to 170kVp
Internal Arc Classification: AFLR Up to 40kA - 1second
Applicable Standards: IEC 62271-200 / IEC 62271-100
Voltage: Up to 36kV, 50/60Hz
Unit Rating: Up to 2500A
Breaking Capacity : Up to 40kA
BusBar Rating: Up to 2500A
Short Time Current: 25 kA - 3 Sec, 31.5 kA - 1 Sec, 40 kA - 1 Sec
P.F. Withstand: Up to 70kV
Impulse Withstand: Up to 170kVp
Internal Arc Classification: AFLR Up to 40kA - 1second
Applicable Standards: IEC 62271-200 / IEC 62271-100
Ring Main Unit (RMU)
Type AR12 with ring switches and Switch-Fuse/circuit breaker in SF6 insulated chamber.
Salient Features :
- Free standing or Transformer mounted
- Indoor and outdoor use
- Built-in Earthing Switches for ring cables and Transformer
- Built-in cable testing facility
- High degree of operator safety
- Full Protection from external environment
- Single operating handle for all Switches
- Reduced maintenance
- Extensible and non extensible
Ratings | Unit | Ring Switch (Load Break Switch) Type: ARRS-12 | Transformer Switch-Fuse (Load Break Switch) Type: ARTS 12 | Vacuum Circuit Breaker Type: AH12 |
---|---|---|---|---|
Rated Voltage | kV | 12/15 | 12/15 | 12/15 |
Rated Current (IEC Rating) | A | 630 | 200 | 630 |
P.F. Withstand Voltage | kV | 28/38 | 28/38 | 28/38 |
Impulse Withstand Voltage | kVp | 75/95 | 75/95 | 75/95 |
Frequency | Hz | 50/60 | 50/60 | 50/60 |
Breaking Current | kA | - | 20/25 ** | 20/25 |
Mainly Active Load | A | 630 | 200 | - |
Closed Loop Current as per IEC 62271 - 103 | A | 630 | - | - |
Cable Charging Current as per IEC 62271 - 103 | A | 25 | 25 | 25 |
Short-time Withstand Current for 3 sec | kA | 20 | 2.5 | 21 |
Short-time Withstand Current for 1 sec | kA | 25 | 3.15 | 25 |
Rated Peak Withstand Current | kAp | 62.5 | 8.2 | 62.5 |
Rated Peak Making Current | kAp | 62.5 | 50/65** | 62.5 |
Fuse Rating | A | - | Up to 160 | - |
Rated Busbar Current (IEC Rating) | A | Up to 1250 | Up to 1250 | Up to 1250 |
Minimum operating SF6 Gas Pressure | Bar g | 0.05 | 0.05 | 0.05 |
Compact Switchgear for Compact Subsation
Unique design of Compact Switchgear with arc products release to top, for compact substation application (Switchgear height 2000 mm, substation roof height 2600mm from ground)
TECHNICAL DATA FOR AH12/C
Voltage: Up to 15kV 50/60Hz
Unit Rating: Up to 800A / 1000A
BusBar Rating: Up to 1000A
Short Time Current: Up to 31.5kA for 3second
P.F. Withstand: Up to 28kV
Impulse Withstand: Up to 75kVp
Internal Arc Classification: AFLR Up to 31.5kA - 1second
Applicable Standards: IEC 62271-100, 62271-102
Voltage: Up to 15kV 50/60Hz
Unit Rating: Up to 800A / 1000A
BusBar Rating: Up to 1000A
Short Time Current: Up to 31.5kA for 3second
P.F. Withstand: Up to 28kV
Impulse Withstand: Up to 75kVp
Internal Arc Classification: AFLR Up to 31.5kA - 1second
Applicable Standards: IEC 62271-100, 62271-102
TECHNICAL DATA FOR VCB TYPE : 12 AH 32 *
Rated Voltage: Up to 12kV
Rated Thermal Current: Up to 800/1000A
Rated s.c current: Up to 31.5kA
Rated peak withstand current: Up to 80KA
Rated s.c breaking current: Up to 31.5KARated s.c making current: Up to 80KAp
Service Class: M2
* For 25KA application, Type description 12AH25
Rated Voltage: Up to 12kV
Rated Thermal Current: Up to 800/1000A
Rated s.c current: Up to 31.5kA
Rated peak withstand current: Up to 80KA
Rated s.c breaking current: Up to 31.5KARated s.c making current: Up to 80KAp
Service Class: M2
* For 25KA application, Type description 12AH25
Low Voltage Switchgear
Main Low Tension Board (MLTB)
Main Low Tension Boards comprise of incoming Air Circuit Breakers, horizontal and vertical busbars and outgoing Air Circuit Breakers / Moulded Case Circuit Breakers.MLTBs are designed, manufactured and tested for short circuit current up to 100 kA.
TECHNICAL DATA
Type: LVSG
Rated operational Voltage: up to 440V, 50/60Hz
Current rating: up to 6300A
Short circuit current: up to 100kA for 1second
Internal Arc: up to 100kA for 0.5second
Application: Indoor / outdoor
Cable entry: Bottom (Top entry/exit or busduct entry on request)
Applicable Standards: IEC 61439-2
Type: LVSG
Rated operational Voltage: up to 440V, 50/60Hz
Current rating: up to 6300A
Short circuit current: up to 100kA for 1second
Internal Arc: up to 100kA for 0.5second
Application: Indoor / outdoor
Cable entry: Bottom (Top entry/exit or busduct entry on request)
Applicable Standards: IEC 61439-2
Motor Control Centre
Motor Control Centres generally comprise of incoming Air Circuit Breakers, main horizontal and vertical busbars, outgoing starter modules with MCCB / Switch Fuse Unit, Contactors, Overload Relays, etc.
MCCs are designed, manufactured and tested for short circuit current up to 100kA.
Intelligent type MCC with device level integration to control , protect and monitor incomers, motors and feeders.
TECHNICAL DATA
Rated operational Voltage : up to 440V, 50/60Hz
Current Rating: 1600A
Short Circuit Current:50kA for 0.5second
Short circuit current: up to 100kA for 1second
Application: Outdoor, Transformer mounted
Application: Indoor / outdoor
Cable entry: Bottom
Applicable Standards: IEC 61439-2
Rated operational Voltage : up to 440V, 50/60Hz
Current Rating: 1600A
Short Circuit Current:50kA for 0.5second
Short circuit current: up to 100kA for 1second
Application: Outdoor, Transformer mounted
Application: Indoor / outdoor
Cable entry: Bottom
Applicable Standards: IEC 61439-2
Control & Relay Panel
Control and Relay Panels for systems up to 400 kV are designed, manufactured and supplied to suit requirements of each specification.
Construction types include:
- Standard 600/800/1200 width panels
- Relay Panels with transparent doors
- Duplex Panels with walkway
- Panels in 'L' and 'U' formation
RANGE OF CONTROL PANELS SUPPLIED
- Local Control Panels for Switchgear up to 400kV
- Remote Control Panels for Switchgear up to 400kV
- Control & Relay Panels for Switchgear up to 36kV
- Relay Panels for 132kV Switchgear
- Remote Tap changer Control Panels
- Control and Relay Panels for Shunt Reactors
- Pilot Marshalling Cabinets
- Telemetry Terminal Transfer Cabinets
- Annunciator Panels
- Synchronizing Panels
- Interposing Relay Panels
Outdoor Distribution Board With ACB/MCCB or Fuses
Used in residential / industrial installations. Distribution Boards are directly mounted on transformer, totally enclosed, sheet steel fabricated construction and consists of:
- Incoming Isolator/ACB
- Outgoing MCCB's or Fuses
- Instrument panel with Voltmeter, selector switches, Ammeters and Service fuses
TECHNICAL DATA
Type: LVMCC
Rated operational Voltage: up to 440V, 50/60Hz
Current rating: up to 6300A
Short circuit current: up to 100kA for 1second
Internal Arc: up to 100kA for 0.5second
Application: Indoor / outdoor
Cable entry: Bottom (Top entry/exit or busduct entry on request)
Applicable Standards: IEC 61439-2
Type: LVMCC
Rated operational Voltage: up to 440V, 50/60Hz
Current rating: up to 6300A
Short circuit current: up to 100kA for 1second
Internal Arc: up to 100kA for 0.5second
Application: Indoor / outdoor
Cable entry: Bottom (Top entry/exit or busduct entry on request)
Applicable Standards: IEC 61439-2
Transformers
Oil Filled Transformers (up to 50 MVA & voltage up to 132kV)
Al-Ahleia has supplied conventional / hermetically sealed transformers from 1 MVA to 50 MVA up to 132 kV class to various customers in Kuwait and abroad.Our Transformers are Type tested.
Type: ATO
1. Distribution Transformers (Single / Dual Ratio)
- Distribution Transformers are meant for Secondary distribution of power at customer's end.
- Al-Ahleia manufactures distribution transformers ranging from 50KVA to 2500KVA with Cable Box on HV and LV side meant for connecting in secondary distribution network.
- Al-Ahleia can also manufacture pole mounted transformers with HV & LV bare bushings. Such type of transformers supplied by us are operating for giving power to oil well supply at Joint operations.
- Al-Ahleia is manufacturing Power Transformers ranging from 2500KVA to 50,000KVA,132KV class.
- These transformers are meant to be used in primary distribution network.The power is received from high voltage network and step-down to lower voltage useful at customer's end or useful for secondary distribution.
- Al-Ahleia manufactures hermetically sealed transformers which are totally sealed from outside air. In smaller transformers, Dry air cushion is used to take up expansion space needed due to variation in oil level because of temperature.
- In larger transformers a rubber bag is used in the conservator which takes up expansion/contraction of oil and thus isolate the transformer oil from outside atmosphere.
- Ratings as per Customers requirement.
- Earthing Transformers are zig-zag transformers.They are special purpose transformers.
- It has primary winding but no secondary winding or sometimes an auxiliary winding is given for lighting loads.
- Application of these transformers is derived for earth reference point for ungrounded electrical system.
- This is also used for control of harmonic current.
- Al-Ahleia can supply earthing transformers with short-time current rating of 10 seconds and 30 seconds and with auxiliary winding. However, customer has to specify the short-time current rating and zero phase sequence impedance.
5. Regulating Transformers
- Regulating Transformers are used to give large variable range of output voltage keeping input voltage constant or give constant output voltage from variable input voltage.
- Ratings as per Customers requirement.
- Al-Ahleia can supply Auto Transformers which has only one winding and the input and output are taken from same winding. Such type of arrangement reduces cost of transformer as one winding is common between primary and secondary windings.
- Ratings as per Customers requirement.
- Al-Ahleia can manufacture converter transformers for use with thyrister converter used in motor control centres or in any variable speed drives.
- In larger transformers a rubber bag is used in the conservator which takes up expansion/contraction of oil and thus isolate the transformer oil from outside atmosphere.
- Ratings as per Customers requirement.
- Al-Ahleia can manufacture transformers suiting to arc furnace duty or induction furnace duty.
- Customer has to specify incoming voltage and the various outgoing voltages required with KVA ratings of tapping i.e. where constant KVA required or variable KVA rating required.
Cast Resin Transformers (up to 10 MVA & voltage up to 33kV)
Large number of Cast Resin Transformers have been supplied for electrical distribution network.
Cast Resin Transformers suitable for Unit Distribution Substations have also been supplied.
Cast Resin Transformers suitable for Unit Distribution Substations have also been supplied.
Type: ATC
- Distribution Transformers (Stand alone)
- Transformers for Unit Distribution Substation
Unit Distribution Substations (UDS)
Oil Filled Transformer
Unit Distribution Substation (UDS) consists of:
- Weather proof metal housing.
- Ring Main Unit up to 15 kV
- Oil filled Transformer up to 1600kVA.
- Low Voltage cabinets.
TECHNICAL DATA
Application : Outdoor
Transformer: Oil filled
LV Connections : Distribution Board / Cable Box
RMU: SF6 Type
Application : Outdoor
Transformer: Oil filled
LV Connections : Distribution Board / Cable Box
RMU: SF6 Type
Cast Resin Transformers
Unit Distribution Substation (UDS) consists of:
- Weather proof metal housing.
- Ring Main Unit up to 15 kV
- Cast resin Transformer up to 1600kVA.
- Low Voltage cabinets.
TECHNICAL DATA
Application : Outdoor
Transformer: Cast resin
LV Connections : Distribution Board / Cable Box
RMU: SF6 Type
Application : Outdoor
Transformer: Cast resin
LV Connections : Distribution Board / Cable Box
RMU: SF6 Type
Packaged Substation
Packaged Type Substations
Packaged Type Substation Housing/Equipment
Packaged Type Substation Housings have following typical features: Modular type pre-fabricated Substation rooms are of metallic construction, fully pressurized and environmentally controlled to suit site ambient conditions with standard specifications:
Packaged Type Substation Housings have following typical features: Modular type pre-fabricated Substation rooms are of metallic construction, fully pressurized and environmentally controlled to suit site ambient conditions with standard specifications:
- Steel structured construction with external galvanized cladding envelope.
- Multi-storeyed housing construction.
- Smooth Internal finish, easily maintainable walls and ceiling.
- Floor plates 6 mm thick with suitable openings for cable entry.
- Internally partitioned to form separate rooms.
- Thermally insulated envelope exceeding normally applied standards using Rock Wool up to 100mm thick.
- Rugged strong steel doors single/double with high performance seals, break resistant hinges, fire or blast rated as per requirements.
- Removable Lifting lugs at suitable location.
- Polyurethane Paint finish on galvanized cladding for maximum corrosive protection.
- Base frame plates for attachment to foundations or under structure.
- Roof Platform with ladders for access to HVAC and ventilation systems on Roof.
- Fire and Blast Resilient rated as per requirement.
- Air conditioning and ventilation system with total redundancy as per requirement.
- Fire detection, alarm and automatic fire extinguisher system with 100% reserve as per requirement.
- Internal and external lighting.
- Raised floor facilities, if applicable.
- Furniture, fitting and floor coverings as required.
Major equipment assembled inside the Substation housing:
- HV Switchgear
- LV Switchgear
- Motor Control Centers
- Oil/Cast resin Transformer
- DC System with Batteries and Charger
- Internal Cabling System
- Marshalling and Annunciator Panels
- Data acquisition System
- HV/LV Bus ducts
- Air Conditioning
- Fire fighting/Fire Alarm control
Busducts
HV and LV Busducts are designed and manufactured for connection between transformer and switchgear and between two switchgears. The Busducts are sheet steel fabricated, air insulated type and fully engineered to suit Customer's requirements.
TECHNICAL DATA (Type: UDS)
Type ABD 1: for Low Voltage Busducts up to 440V
Type ABD 12: for High Voltage Busducts up to 12kV
Current Rating: Up to 6300A
Applicable Standard: IEC 61439-6 and IEC 62271-200
Short time current Rating: up to 100kA for 1 sec for ABD 1 /
up to 40kA for 3 secs for ABD 12
Degree of Protection: To suit application
Construction: Air Insulated
Paint Colour (Shade): Light Grey to Shade RAL 7032
Accessories: As per Specifications
Type ABD 1: for Low Voltage Busducts up to 440V
Type ABD 12: for High Voltage Busducts up to 12kV
Current Rating: Up to 6300A
Applicable Standard: IEC 61439-6 and IEC 62271-200
Short time current Rating: up to 100kA for 1 sec for ABD 1 /
up to 40kA for 3 secs for ABD 12
Degree of Protection: To suit application
Construction: Air Insulated
Paint Colour (Shade): Light Grey to Shade RAL 7032
Accessories: As per Specifications
Substation Automation
Data Acquisition Systems/ENMC/E-SCADA
Substation Automation through SCADA (ENMC) system
SCADA (ENMC or E-SCADA) is Supervisory Control & Data Acquisition System. This deals with two sections.
RTUs (Remote Telemetry Unit) are also deployed at specific locations in the field to gather the information from various equipment and communicate to SCADA master.
SCADA master collects and processes the data for control and monitoring.
HMI (Human Machine Interface) exchanges data from SCADA master in a predefined presentable format. This consist of information for effective operation control and monitoring.
In short, substation engineer has a constant access to real time information for his analysis and controlling various equipments / process.
Communication network can be through MODEM or dedicated optical fiber / serial port lines. By and large SCADA communication takes place through LAN only.
Most widely used communication network are RS232, RS485 link, Ethernet cable, fiber optic cable etc.
Redundant network ensures interruption free communication, if required.
Communication protocol is based on preset formats and rules to allow SCADA system to send and receive analogue / digital signals.
Most widely used protocols are MODBUS / IEC60870 / IEC61850 standard.
- Substation / equipment / process to be monitored and controlled.
- Network of devices (IEDs, SCADA master / HMI, RTU, etc) that interfaces with substation / equipment / process.
RTUs (Remote Telemetry Unit) are also deployed at specific locations in the field to gather the information from various equipment and communicate to SCADA master.
SCADA master collects and processes the data for control and monitoring.
HMI (Human Machine Interface) exchanges data from SCADA master in a predefined presentable format. This consist of information for effective operation control and monitoring.
In short, substation engineer has a constant access to real time information for his analysis and controlling various equipments / process.
Communication network can be through MODEM or dedicated optical fiber / serial port lines. By and large SCADA communication takes place through LAN only.
Most widely used communication network are RS232, RS485 link, Ethernet cable, fiber optic cable etc.
Redundant network ensures interruption free communication, if required.
Communication protocol is based on preset formats and rules to allow SCADA system to send and receive analogue / digital signals.
Most widely used protocols are MODBUS / IEC60870 / IEC61850 standard.
Features of SCADA (ENMC or E-SCADA):
- Display of real time data of all substation parameters acquired from protection relays, measurement centers and other intelligent electronic devices (IEDs).
- Animated Graphical User Interface (GUI).
- Communication with IED's through standard protocols like MODBUS, DNP, and IEC 61850 etc.
- Secure Control of switching device.
- Display of real time and historical alarms, events and trends.
- Report generation.
- Waveform capturing and recording of alarms, disturbance and fault conditions.