LOW VOLTAGE BUSINESS UNIT CATALOGUE

CONTENT

2 ABOUT US 5 DISMOD IN≤5000A LOW VOLTAGE POWER DISTRIBUTION AND MOTOR CONTROL SWITCHBOARD 21 400/230 VAC AND 48...220 DC AUXILIARY SERVICES SUPPLY CABINETS 27 CONTROL, SIGNALLING AND PROTECTION PANELS FOR 110/20(6) kV POWER STATIONS

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About us Evolving year by year as a team relied on passion and trust as fundamental values, we succeeded to show that, based on the high technical level of our products, we can develop the best solution to our customer’s requests.

Our constant focus for quality made us keep in close plan the improvement of facilities, technical equipment and other specific endowments of our activity.

Electroalfa is a well known first-class solutions provider for electrical power distribution with 20 years of experience in field. The company manufactures low and medium voltage distribution equipment for electrical power systems, and also steel manufacturing parts. The company can manage complex projects as general contractor providing technical support, maintenance and after sales services. The company develops turn key projects for electrical power production from renewable sources.

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ABOUT US

Electroalfa means today 10 divisions, 10 sales representatives, 4 workshops, 3 modern factories and a strong brand based on solid experience, qualifications and enthusiasm of 350 specialists.

We are not just quality equipment producer and supplier, which offers safety, comfort and ease in use, but we are long-term partners for our clients. The desire for producing high level products, in line with the last technical improvements made Electroalfa to implement and keep up to date an Integrated Management system, which meets SR EN ISO 9001:2008, SR EN ISO 14001:2005, SR OHSAS 18001:2008, SR ISO/CEI 27001:2006 and SA 8000:2008, standard requirements, system which has been evaluated and certified by SRAC CERT Bucuresti, respectively IQNet (SA 8000).

We also hold: • The National Commission for Nuclear Activities Control (CNCAN) authorization for manufacturing on the nuclear field; • National Authority for Energy Regulation (ANRE) A, B, C1B, C2B, E1, E2, F in energy field certification; • Accept as agreed supplier for Transelectrica, Electrica and E-on Moldova;

• Romanian Railway authority (AFER), Romanian Civil Aeronautical Autority (CAA) and Romanian Naval Authority (ANR) authorized; • authorized by Agriculture, Forests and Rural Development Ministry for land improvement activities (building and installation works); • approval from Constructions Technical Council of the Transport, Constructions and Tourism Ministry.

Based on a strong research activity, we provide innovative, safety, high quality products and services for our clients. Electroalfa spirit gives life to each product.

Product portfolio Low voltage business unit Low Voltage Business Unit provides for the customers a full range of main and secondary distribution switchboards up to 5.000A (Power Center and Motor Control Center), DISMOD type, auxiliary services AC and DC cabinets, industrial automation and control switchboards, protection, signalling, control and automation panels for 110/20(6) kV power stations.

We establish long-term action plans with daring objectives, which are carefully coordinated and implemented by personnel with a long experience in electrical field. The relationships with our partners are the human expression of the technical solutions proposed. For putting into work of our plans we have developed partnerships with the most important companies working on the electrical installations field.

ABOUT US

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DISMOD IN≤5000A LOW VOLTAGE POWER DISTRIBUTION AND MOTOR CONTROL SWITCHBOARD

• PCC&MCC, In≤5000A Low voltage distribution switchboard • MCC, In≤3200A Low voltage distribution switchboard (legacy- available only for after sales services and upgrades of installed base)

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DISMOD-T3 In≤5000A Low voltage distribution board DISMOD-T3 is the newest and most performing product of DISMOD family; represents the optimal solution for a wide range of low voltage applications in energy, infrastructure, industry and buildings. General presentation DISMOD-T3 distribution board generation represents a new concept offering solutions in power distribution, automation and centralised motors control for a wide range of application within the following fields: energy, infrastructure, industry, buildings. Depending on the application’s particularities and the customers’ requests Electroalfa offers complete solutions including, distribution and/or centralized motors control, automation, (automatic source changeover, centralised process monitoring and/or control, data communication etc.) and special motor starters (softstarters, AC and DC variable speed drive, special electrical equipment actuations, etc.). The cubicle is completely realized within the own production areas, using latest technology and facilities, highly productive. For all the applications, an experimented team, up-to-date to the latest achievements in the field and supported by a professional system, CAD-CAM, makes available for the client modern, maximum reliability and service continuity, highly flexible solutions.

The special performances of this distribution board are certified through type-tests assemblies (TTA), in accordance with EN 60439-1 European standard. The tests were carried out in independent testing laboratories from Romania, in most stressful requirements, with most constraints. Therefore we certify the well functioning of the distribution boards, practically for any application. A tested electric device provides the guarantee of verified technical solutions, optimal internal architecture, assembly continuous running, within maximum safety condition and having the possibility of further extensions with minimum intervention.

Together with high quality products, we offer to our clients technical assistance for installing and commissioning, personnel training, maintenance and after sales services.

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DISMOD IN≤5000A LOW VOLTAGE POWER DISTRIBUTION AND MOTOR CONTROL SWITCHBOARD: DISMOD-T3 In≤5000A low voltage distribution board

The DISMOD-T3 distribution board represent the perfect combination between technical performances („top” technical parameters, quality, reliability, flexibility, modular technology, etc.) and economic efficiency.

Together with the new technical solutions and the improvements used for the building-up of this new generation of switchboards, we succeeded to realise a product which completely responds to the following requests: • flexibility – Equipment is chosen according to operating, maintenance, upgrading, layout and budget requirements which can be contradictory. The wide range of solutions offered by DISMOD T3 in terms of dimensions, connection type, installation mode, service rating, combination possibilities, equipping reserve space at a later stage, including for fixed feeders, enables it to meet project requirements;

– Management of modifications during the project is simplified by interchangeability of FUs and the fact that they can be cabled outside the switchboard;

• easy maintenance – allows the total or partial reconfiguration of a column, drawer checking (including the electrical equipment within the drawer), without switching off the switchboard.

• fast and easy installation – provides efficient and simple installation solutions and offers important facilities for connections; • personnel safety – ensured by optimal placement of electrical equipment, use of mechanical interlocks, separation of internal functional units and the equipotential achievement of the whole metal frame; • reliability – proved by type-test certification (TTA), of our solutions by independent laboratories;

Technical data Installation

indoor

Ambient temperature for operation

−5°C...+40°C

Ambient humidity

maximum 50% la +40°C

Ambient temperature during transport and storage

–25°C...+55°C, maximum +70°C, for 24 h

Degree of pollution

3

Overvoltage category

III

Operational altitude

maximum 2000m above sea level

Electromagnetic environments

Type A

Electric characteristics Rated voltage (Ue)

maximum 690V (*)

Rated insulation voltage (Ui)

1000V

Rated impulse withstand voltage (Uimp)

8kV

Rated frequency

50/60Hz (*)

Rated currents (In) • main busbars

5000A

• distribution busbars

700/1000/1500A

Rated short-time withstand current (Icw/1s) • main busbar

100kA

• distribution busbar

65kA

Peak current (Ipk)

(*)

• main busbars

220kA

• distribution busbars

143kA

Rated diversity factor

1

RInternal arc withstand current

80kA/0,3sec

conditioned values by the specific electric equipment for each application.

DISMOD IN≤5000A LOW VOLTAGE POWER DISTRIBUTION AND MOTOR CONTROL SWITCHBOARD: DISMOD-T3 In≤5000A low voltage distribution board

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Mechanical Characteristics Degree of protection

IP41(IP54 by request)

Number of drawers per column

maximum 30

Form

3a/3b/4a/4b

Materials category

I

Seismic behavior

0,5g; 1÷35Hz; biaxial; 20s

Column weight • feeder / bus-tie

700÷850kg

• distribution

350÷550kg

Sizes In = maxim 3200A • height (H)

2.200mm

• width (W)

300÷1.200mm

• depth (D)

700mm

Sizes In = 4000/5000 • height (H)

2.200mm

• width (W)

300÷1.200mm

• depth (D)

900mm

Switchboard architecture Column is the basic unit of DISMOD-T3 switchboard. Each column is prepared for mounting and connecting the functional units needed for application and for future extensions or modifications.

Functional units A functional unit represents an electric and mechanical device assembly contributing to realise the same function. The following functional units are available: Fixed device (devices) mounted on fixed support • the device (devices) is mounted on a fixed metallic support (crosspieces, mounting panel, etc.); • the compartment is equipped with front door or plate (plain or dedicated).

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Plug-in device, mounted on a fixed support • plug-in kit is mounted on a fixed support (crosspieces, mounting panel, etc.); • the compartment is equipped with front door or plate (plain or dedicated). Chassis withdrawable device • the chassis provides the following functional positions: • working position "plug-in"; • testing position "test"; • cut-off position "draw-out"; • "withdrawn" position. • the enclosure is equipped with front door or plate. Withdrawable drawer S1, S2 and S3 types • The drawer is used to make up a FU consisting of several mechanically attached devices, that can assume the “plug-in / test / draw-out / withdrawn” positions, allowing the padlocking procedures and incorporating the human interface elements on the front panel; • there are 4 (four) functional positions: • working position "plug-in"; • testing position "test"; • cut-off position "draw-out"; • "withdrawn" position . • pre-triggering and blocking procedures may be provided.

DISMOD IN≤5000A LOW VOLTAGE POWER DISTRIBUTION AND MOTOR CONTROL SWITCHBOARD: DISMOD-T3 In≤5000A low voltage distribution board

Withdrawable drawer S1/3, S2/3 and S1/2 types • Economic solution for simple or small power circuits; the width of the drawer is 1/3, 2/3 or 1/2 of the width of the column; • Same functions and positions as S1-3 type drawers; • functional positions are achieved with a special switch. Disconnectable unit equipped with fuse switch • fuse switch is mounted on a support, equipped with upstream plug-in clamps for connection with the distribution busbars. “plug-in” and “withdrawn”; • “plug-in” and “withdrawn” are the only possible positions; • external cables connection is made directly on the fuse switch terminals; • fuses access is possible only with the switch in “open” position; the accessories used are offered by the fuse switch provider.

Column architecture Column is the basic unit of any DISMOD T3 distribution board. It houses the functional units and the busbars.

Regardless of the application, the column of a DISMOD-T3 switchboard is divided into 4 partitioned zones:

In a DISMOD-T3 switchboard following applications can be implemented in a column: • distribution feeder (incoming/ outgoing); • motor control feeder; • automatic capacitor banks; • horizontal withdrawable surge arrester section; • other applications (metering and measurements, LV/LV transformers, automation systems).

• main busbar area (position 1) – situated in the top rear part of the column for In≤ 3200A or in the rear part for In=4000A/5000A; • switchgear area (position 2) – located in the front part of the column; the space designated to each functional unit is vertically defined as a number of 175mm high modules; • distribution busbar area (position 3) – always at the rear of switchgear area; • cables connection area (position 4) – located in the right-side area of the column.

DISMOD IN≤5000A LOW VOLTAGE POWER DISTRIBUTION AND MOTOR CONTROL SWITCHBOARD: DISMOD-T3 In≤5000A low voltage distribution board

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Frameworks, cover panels The framework of a DISMOD T3 column consists of vertical frames and horizontal crosspieces forming a shock resistance and rigid assembly. The framework receives various types of panels: • front doors/ panels, entirely or partially, with or without cuttings (1); • rear door/panel, with ventilation grid (4); • plain side panels (2); • top roof (3); • bottom plate with/ without cable access (9); • devices mounting plate (7); • partitioning panels (8); • front ventilation grid (10); • mounting accessories (6).

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DISMOD IN≤5000A LOW VOLTAGE POWER DISTRIBUTION AND MOTOR CONTROL SWITCHBOARD: DISMOD-T3 In≤5000A low voltage distribution board

Sizes

DISMOD IN≤5000A LOW VOLTAGE POWER DISTRIBUTION AND MOTOR CONTROL SWITCHBOARD: DISMOD-T3 In≤5000A low voltage distribution board

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Pos.

1.

Designation

Incoming feeder/ bus-tie column

L1

L2

L3

L4

A(*)

500

–

–

–

700

600

–

–

–

900

700

–

–

–

800

–

–

–

700; 900

900

–

–

–

900

1000

–

–

–

900 900

1200

–

–

–

2.

Column with fixed device on fixed support FU

–

–

800

–

–

–

900

–

3.

Column with withdrawable drawer FU

–

800

–

900

–

–

700; 900

4.

Column with withdrawable device on chassis FU

–

–

–

700; 900

5.

Column with withdrawable drawers FU combined with withdrawable device on chassis FU

–

–

–

700; 900

6.

Column with disconnectable unit with fuse switch FU

–

1200

–

–

700; 900

7.

Main busbar riser column

–

–

–

800 900 800 900

300 400

700; 900

700; 900

500 600 8.

700

Various applications column

800

700; 900

900

(*)

–

1000

1000

–

–

1200

1200

–

Depth D=700mm is valid for In≤2500A and depth D=900mm is valid for In>2500A.

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DISMOD IN≤5000A LOW VOLTAGE POWER DISTRIBUTION AND MOTOR CONTROL SWITCHBOARD: DISMOD-T3 In≤5000A low voltage distribution board

MCC-DISMOD In≤3200A low voltage distribution switchboard (legacy - available only for after sales services and upgrades of installed base)

Motor control center DISMOD switchboard, with its modular structure and withdrawable units represents the optimal solution in electrical distribution and motor control applications in large industrial, tertiary and infrastructure sites. specialists may contain also complex technical solutions including functional units for automation (automatic source changeover, centralized control, processes control and monitoring, data communications, etc.) and electronic devices (softstarters, AC or DC variable speed drives, special electrical equipments, etc.).

General presentation DISMOD is a low voltage distribution board with modular structure representing the best solution for industrial processes due to its high level of adaptability, flexibility and continuity of service. The cubicle is completely realized within the own production areas, outfitted with latest technology and high productivity equipments and facilities. For all the applications, an experimented team, up-to-date to the latest achievements in the field and supported by a professional system, CAD-CAM, makes available for the client modern, flexible, maximum safety and operational continuity techniques. According to the application’s particularities and to the client’s requests, the technical design realized by the Electroalfa

Together with high quality products, we offer to our clients technical support for installing and commissioning, training courses for customer’s personnel, maintenance and after sales services. The special performances of this distribution board are certified through type-tests assemblies (TTA), in accordance with EN 60439-1 European standard previsions. DISMOD successfully passed both the resistance test under the condition of the energy arc produced by an internal fault, according to the EN 61641 standard, and the one related to electromagnetic compatibility (EMC), according to SR EN 60439/A1 standard.

All the tests were realized in independent laboratories from Romania and Germany, in most stressful requirements, with most constraints. Therefore we certify the well functioning of the distribution boards, practically for any application. A tested electric device provides the guarantee of verified technical solutions, optimal architecture, functioning in maximum safety condition and having the possibility of further upgrades with minimum intervention.

The DISMOD high reliability degree has been confirmed by the successful running of the tests for checking the behaviour within climatic cycle, protection fulfilment and the response to Romanian specific seismic disturbances. Through the certification no. CAAGCG-MI/P2006001878/13.07.2006, ENEL Italia acknowledges the qualities and the performances of this board and confirms the acceptance of our company among the ENEL agreed producers.

DISMOD IN≤5000A LOW VOLTAGE POWER DISTRIBUTION AND MOTOR CONTROL SWITCHBOARD: MCC-DISMOD In≤3200A low voltage distribution switchboard

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DISMOD distribution board represents the perfect combination between technical performance (‘top’ technical parameters, quality, reliability, flexibility, modular technology, etc.) and economical efficiency.

Electroalfa solutions can be characterized by: • flexibility – management of any changes which may occur during the project is simplified by the interchangeability of the functional units and the fact that they can be cabled outside the switchboard; • ease of installation – provides efficient and simple installation solutions and offers important facilities for cable connections ;

• personnel safety – optimal placement for electrical equipment, use of mechanical interlocks, separation of internal functional units and performing the whole metallic structure equipotential; • easy maintenance – allows the total or partial reconfiguration of a main circuit, withdrawable devices checking (including the electrical equipment within the slide-box), without switching off the section.

• reliability – the certification, through type-tests assemblies (TTA) and resistance to the action of internal arc, of our solutions by independent laboratories in Romania and Germany;

Technical data Installation

indoor

Ambient air temperature • operation • storage

−5°C...+40°C –25°C...+55°C, maximum +70°C, for 24 h

Relative humidity

maximum 50% up to +40°C, non condensing

Degree of pollution

3

Overvoltage category

III

Altitude

maxim 2000m

Electromagnetic environment

Type A

Electric characteristics Rated voltage (Ue)

maximum 690V (*)

Rated insulation voltage (Ui)

1000V

TRated impulse withstand voltage (Uimp)

8kV

Rated frequency

50/60Hz (*)

Rated current (In) • main busbars

3200A

• distribution busbars

630/1000/1500A

Rated peak current (Ipk)

(*)

• main busbars

176kA

• distribution busbars

105kA

Protection of persons against internal arcs

80kA/0,3sec

conditioned values by the specific electric equipment for each application.

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DISMOD IN≤5000A LOW VOLTAGE POWER DISTRIBUTION AND MOTOR CONTROL SWITCHBOARD: MCC-DISMOD In≤3200A low voltage distribution switchboard

Mechanical Characteristics Degree of protection

IP21/31/41 (IP54 by request)

Form

3a/3b/4a/4b

Materials category

I

Seismic behavior

0,5g; 1÷35Hz; biaxial; 20s

Average weight per section • feeder/coupling section

700÷850kg

• distribution section

350÷550kg

Dimensions • height (H)

2.200mm

• width (W)

300÷800mm

• depth (D)

1.100mm

Cubicle architecture The column represents the basic unit of any DISMOD switchboard. Regardless of application, columns are divided into 4 fully partitioned zones: • main busbar area (position 1) — located in the rear upper part of the column; • switchgear area (position 2) — occupies the front side of the section; the space designated to each functional unit includes the volume required for proper operation, safety perimeter, connections and protection against direct contact; the functional unit area is defined vertically by a number of modules; • distribution busbar area (position 3) — situated in the rear part of the switchgear area; • cables connection area (position 4) — located in the rear lower part of the column.

DISMOD IN≤5000A LOW VOLTAGE POWER DISTRIBUTION AND MOTOR CONTROL SWITCHBOARD: MCC-DISMOD In≤3200A low voltage distribution switchboard

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Frameworks, cover panels The structure of each column consists of a vertical metal frame and horizontal cross-pieces forming a shock-resistant and rigid assembly that cannot be deformed. The framework can receive, regarding the application, various types of panels: • front doors (complete or dedicated partial door), drawer front panel, front plates with or without cuttings (1); • rear door/panel, with ventilation grid (5); • plain side panels (2); • top roof (3) with flap (4); • bottom plate with/ without gland plates (9); • mounting accesories (7, 8 10 6); Inter-column and front-rear separations complete the partitioning of each column.

Functional units The range of DISMOD functional units covers all needs in terms of installation mode, withdrawability, form or service rating. Dimensions are standardised for each type of device installed and expressed in 175 mm high modules. The following functional units types are available: Fixed device (one or many) mounted on fixed support • the fixed device (devices) is mounted on a fixed support (cross-pieces, mounting panel, etc.); • the compartment is equipped with front door or plate (plain or dedicated) . Plug-in device, mounted on a fixed support • plug-in kit is mounted on a fixed frame (cross-pieces, mounting plate, etc.); • the enclosure is equipped with front door or plate (plain or dedicated). Withdrawable device • the chassis provides the following functional positions: • working position “connected”; • testing position “test”; • cut-off position “draw-out”; • “withdrawn” position; • the enclosure is equipped with front door or plate. Withdrawable drawer • the device(devices) is mounted on a mobile metallic frame called “drawer”; • the drawer has 4 functional positions: • working position “plug-in”; • testing position “test”; • cut-off position “draw-out”; • “withdrawn” position; • pre-triggering and blocking procedures may be foreseen.

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DISMOD IN≤5000A LOW VOLTAGE POWER DISTRIBUTION AND MOTOR CONTROL SWITCHBOARD: MCC-DISMOD In≤3200A low voltage distribution switchboard

Depending on the application, the functional units can be used for: • Metering • Motor starter • direct-on-line (DOL); • star-delta; • softstarter type; • variable speed drive starter (AC or DC). • Distribution • primary; • secondary. • Automation • automatic source changeover; • centralized control; • process monitoring and control; • communications.

Withdrawable functional unit

Status indicator is in “T” position.

The drawer is used to make up a FU consisting of several mechanically attached devices, that can assume the “plug-in / test / draw-out / "withdrawn” positions, allowing the padlocking procedures and incorporating the human interface elements on the front panel.

Fig.3

Power circuit connection to the distribution busbars and the auxiliary circuit connection are made through special connectors.

“DRAW-OUT” position • Power and auxiliary circuits are disconnected; • Drawer is mechanically blocked.

The drawer movement is performed using special keys (1, fig 1) and (3, fig 3).

This position is reached from ‘Test’ position inserting the special key (3, fig 3) in its seat and moving it counter-clockwise. When the slidebox.

Following functional positions are possible:

Fig. 1

“PLUG-IN” position • Power and auxiliary circuit are connected; • Drawer is mechanically blocked. Status indicator (2) is in ‘I’ position.

Fig. 2

“TEST” position • Power circuit is disconnected; • Auxiliary circuit remains connected; • Drawer is mechanically blocked.

Depending on the size of the electrical equipments which will be mounted, 3 drawer sizes are available: Drawer S1 – h=1M (module) Drawer S2 – h=2M Drawer S3 – h=3M

Status indicator is in ‘O’ position.

Fig. 4

“WITHDRAWN” position This position can be reached from ‘Test’ position by pressing simultaneously the buttons on the drawer handles (position 4). If required, the drawer may be mechanically blocked in the ‘Withdrawn’ position, this option providing the following advantages: • visible signalling of the drawers which are currently in this position; • avoiding possible accidents at work due to incomplete withdrawal of the drawer, combined with its significant weight; • missing space for withdrawn drawers storage.

Note: drawer height is expressed through a number of modules of 175mm.

Depending on the circuit type and the main electrical characteristics of the consumer, withdrawable drawers allow the following configurations: Drawer S1 • distribution (feeder): maximum 250A • motor starters • direct-on-line (DOL): maximum 30 kW • direct-on-line and reversing (DOL-REV): maximum 15 kW Drawer S2 • distribution (feeder): maximum 630A • motor starters: • direct-on-line (DOL): maximum 200 kW • direct-on-line and reversing (DOL-REV): maximum 90 kW • star-delta starter (SD): maximum 75 Kw • applications in special configurations with In ≤ 630A Drawer S3 • distribution (feeder): maximum 630A • motor starters • direct-on-line (DOL): maximum 250 kW • star-delta starter (SD): maximum 110 Kw • applications in special configurations with In ≤ 630A Note: Motor starters from above are for: • utilization category AC-3; • rated voltage 400-415V/50 Hz; • type 2 coordination.

This position is reached from “Connected” position inserting the special key (1, fig 1) in its seat and moving it counter-clockwise.

DISMOD IN≤5000A LOW VOLTAGE POWER DISTRIBUTION AND MOTOR CONTROL SWITCHBOARD: MCC-DISMOD In≤3200A low voltage distribution switchboard

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Compartments The column can be organized with compartments, each one containing the following elements:

Depending of the equipment which will be installed, there are 4 available sizes for compartments: • Compartment C1 – compartment height h= 2M; • Compartment C2 – compartment height h= 3M; • Compartment C3 – compartment height h= 4M; • Compartment C4 – compartment height h= 5M. Note: compartment height is expressed in number of modules, module height being M = 175 mm.

Depending on circuit type, main electrical equipment mounting position and electrical characteristics of the load, Electroalfa recommends the following configurations:

• front door (position 1) – is equipped with 8 latches (position 4) and has an 135° opening angle; • side panels (position 2) – provided with cuttings for natural ventilation; • top partitioning plate (position 3); • bottom partitioning plate (position 5); • device mounting plate (position 6) – depending on the equipment which will be installed in the compartment, it may be vertical (see picture above) or horizontally; • optional accessories – supports, cross-pieces, shutters, etc.

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• distribution (feeder): maximum 800A; • motor starter • direct-on-line (DOL): maximum 450 kW; • star-delta (SD): maximum 315 kW; • softstarter: maximum 250 kW; • variable speed drive: maxim 160 kW. Note: The recommended configurations for starters are : • utilization category AC-3; • rated voltage 400-415V/50 Hz; • type 2 coordination.

DISMOD IN≤5000A LOW VOLTAGE POWER DISTRIBUTION AND MOTOR CONTROL SWITCHBOARD: MCC-DISMOD In≤3200A low voltage distribution switchboard

Sizes

TYPE A

Pos.

Type

TYPE B

TYPE C

L (mm) L1

L2

H (mm)

A (mm)

2.300

1.100

I. “Feeder”, “Busbar Coupler” Section 1. 2.

B

3.

600

–

700

–

800

–

–

400

–

500

II. “Outgoing” Section 1. 2.

C

III. “Busbar Return” Section 1.

A

300

DISMOD IN≤5000A LOW VOLTAGE POWER DISTRIBUTION AND MOTOR CONTROL SWITCHBOARD: MCC-DISMOD In≤3200A low voltage distribution switchboard

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AUXILIARY SERVICES SUPPLY CABINETS FOR 400/230 VAC AND 48...220 VDC

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400/230 VAC and 48...220 VDC auxiliary services supply cabinets DC own consumers: • • • •

protection devices; automation units; interlocks; metering, measuring and signalling devices; • remote terminal units; • emergency lighting. Usually the cabinet has two independent AC power supplies provided by auxiliary service transformers. The cabinet has two single busbar systems coupled through a bus-tie. Automatic source changeover can be provided at request. The DC auxiliary services cabinet have the same configuration except the power supplies which are usually provided by battery systems.

Auxiliary services supply cabinets are designed for feeding low voltage own consumers from: • 400/220/110/20(6kV) power stations; • Hydropower plants; • Thermo power plants. Own services consumers can be fed with AC power supply (400/230VAC) (except the consumers for which, due to security reasons, lower voltage is mandatory) or with DC power supply, usual voltages being 24, 48, 110, 220 VDC.

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AC own consumers usually are: • transformers and autotransformers cooling systems; • voltage regulation equipment; • battery chargers; • battery ventilation systems; • operating mechanism for breakers and switches; • fire alarm system; • lighting equipments; • heating equipments; • AC circuits for metering, protection, automation.

AUXILIARY SERVICES SUPPLY CABINETS FOR 400/230 VAC AND 48...220 VDC

Functionalities AC/DC auxiliary services supply cabinet provides the following functions: • main busbar connection to power suppllies (auxiliary service transformers, AC generators, baterries and rectifiers); • loads connection to distribution busbar; • overload and short-circuit protection for busbar and loads; • metering of electrical parameters (current, voltage) for incoming supply and busbar system; • local and remote control for connection; • automatic source changeover for AC auxiliary services supply cabinets; • working status signalization; • safety of operators; • circuits testing. For AC services cabinets, the following measurements and signalling can be provided: • busbar voltage; • frequency and power factor metering; • measurement of active/reactive energy of incoming supply; • current/ voltage measurements on loads circuits; • automatic source changeover of power supplies; • circuit breakers status signalling (position, fault) for incoming and outgoing circuits. For DC services cabinets, the following measurements and signalling can be provided: • busbar voltage metering; • battery (or rectifiers) currents measuring; • busbar insulation fault detection; • no voltage, undervoltage and overvoltage signalling; • battery status (insulation, voltage level, charging current, capacity); • circuit breakers status signalling (position, fault) for incoming and outgoing circuits.

Measured parameters can be transmitted to other control centres, using convertors (transducers) with 4…20 mA unified signal or through communication network (Modbus, Profibus or other transmission protocols).

Cabinet presentation • one or more steel enclosures with transparent doors, with front or front/rear access (by request). • distribution system made with copper bars and fixed busbar supports, located in the top part of the cabinet, protected against direct contact. • withdrawable circuit breakers for incoming feeders (from transformers or rectifiers/ batteries), with auxiliary contact for open/close/tripped signalling, with manual or remote control. • circuit breakers for outgoings fixed or withdrawable (most common case), with auxiliary contacts. • metering devices: ammeter, voltmeter, power factor meter, frequency meter, etc. • insulation fault detectors. • local control and signalling equipment’s: pushbuttons, lamps, position indicators. • connection terminals for power and control and signalling circuits.

Cabinet architecture • usually, AC/DC auxiliary services supply cabinets are realized in one or more associated steel enclosures with transparent doors, allowing visual access of the equipment without opening the door. • equipments are mounted on a mounting plate located in the backside of the enclosure, access being possible from the front side of the cabinet. • on request and according to the application type, equipments can be mounted on both sides of the mounting panel. In these cases front/rear access is provided. • metering devices, control and signalling equipments are mounted on dedicated hinged front plates located in the upper part of the cabinet. • the cable entry is done through the lower side of the cabinet, through dedicated gland plates. On request, the cable access is possible through the top part of the cabinet. • switchboard lighting, opening, 16A/230V a.c. outlet, heating element with thermal control are provided as standard. • the cabinets are floor mounting type; 100mm or 200mm high plinths are available. • Romanian language labelling (other languages on request) is provided. • RAL 7035 powder paint colour finishing.

AUXILIARY SERVICES SUPPLY CABINETS FOR 400/230 VAC AND 48...220 VDC

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Technical Data AC services supply cabinets Rated voltage (Ue)

400/230V

Rated insulation voltage (Ui)

690V

Rated frequency (fn)

50Hz

Rated impulse voltage (Uimp)

8kV

Rated current (In)

maximum 630A

Rated short-time withstand current (Icw/1s)

25kA

Rated peak withstand current (Ipk)

52,5kA

DC services supply cabinets Rated voltage (Ue)

24, 48,110, 220VDC

Rated insulation voltage (Ui)

690V

Rated impulse withstand voltage (Uimp)

8kV

Rated current (In)

maximum 250A

Rated short-time withstand current (Icw/1s)

16kA

Rated peak withstand current (Ipk)

32kA

Operating conditions Environment type

WDr/CT (moderate climate: dry hot/ cold temperate)

Installation

indoor

Operating temperature

-10°C…+40°C

Transport, storage temperature

-40°C…+55°C

Humidity

50% la +40°C, 90% la +20°C

Maximum operating altitude

2000m

Degree of pollution

3

Overvoltage category

III

Electromagnetic environments

Type A

Protection degree

IP43

24

AUXILIARY SERVICES SUPPLY CABINETS FOR 400/230 VAC AND 48...220 VDC

400/230 V a.c. own services customers SECTION OF BUS BAR 1

400/230 V a.c. own services customers SECTION OF BUS BAR 2

AC auxiliary services supply cabinet – Electrical schema

220 V d.c. own services customers SECTION OF BUS BAR 1

220 V d.c. own services customers SECTION OF BUS BAR 2

DC auxiliary services supply cabinet – Electrical schema

AUXILIARY SERVICES SUPPLY CABINETS FOR 400/230 VAC AND 48...220 VDC

25

CONTROL, SIGNALLING AND PROTECTION PANELS FOR 110/20(6)Kv POWER STATIONS

27

Control, signalling and protection panels for 110/20(6)kv power stations Classification According to the functionality of the 110kv switchgear following types of protection panels are available: • feeder protection panels; • 110/20(6)kV transformer protection panels; • bus-tie protection panels.

Functionalities According to the application type, the protection panels are equipped with I.E.D. (Intelligent Electronic Device) which can provide the following functionalities (the list is not exhaustive):

• Large graphic display, either integrated or as an external module; • Additional protection functions: overexcitation, overvoltage, undervoltage, residual overvoltage, directional overcurrent and earth-fault, overfrequency, underfrequency and underimpedance line back-up protection; • Extensive set of communication protocols: IEC 60870-5-10x, IEC 61850, Profibus, Modbus, etc; • current and voltage transformers circuits survey; • self-testing; • breaker failure, recloser, source changeover functions with able/ disable option.

• circuit breakers, switches ON/OF command, remote and local, with interlocks fulfilment; • transformer voltage regulation through on load tap-changer control; • transformer ventilation control; • network parameters measuring: phase currents, neutral current, phase to phase and phase to neutral voltages, active and reactive power, power factor, frequency, load curve; • primary equipment’s position monitoring; • tap-changer position monitoring; • Condition monitoring including circuit-breaker condition monitoring, trip circuit supervision and internal self-supervision of the transformer terminal; • events log; • built-in events reporting and sequential events recorder; • Control functions including local and remote control of switching objects, including object status indication and interlockings on bay and substation level; • communication interface with the central;

28

CONTROL, SIGNALLING AND PROTECTION PANELS FOR 110/20(6)Kv POWER STATIONS

Panel architecture • suitable steel floor mounting enclosure 2000x800x600 mm (HxWxD), with 200mm high plinth, RAL 7035 painting colour with reinforced transparent 2mm thick front door. • hinged inside 19’’- 40U rack, with 120° opening angle, for mounting the protection relays (main and reserve) and control and signalling elements (disconnection terminals, lamps, selectors, current/ voltage transformers connection blocks).

Panel components • suitable steel enclosure; • basic protection relay (Siemens, ABB, Schneider, Areva); • reserve protection relay (Siemens, ABB, Schneider, Areva); • controller for tap changer for position information and voltage automatic regulation (only for transformer protection cabinet); • special connector blocks for currents and voltage transformers with testing facilities; • disconnection terminals; • selectors, pushbuttons, signalling lamps, auxiliary relays; • circuit breakers for control, signalling, spring charging and heating circuits; • connection terminals. The protection relay may have graphical or alphanumeric display, various auxiliary supply voltages and different numbers of digital inputs (DI), analogical inputs (AI) and digital outputs (DO) according to the application’s requests. Communication protocol shall be chosen according to SCADA system, most used being IEC 61850.

• in the back side of 19” rack, a mounting panel is available for auxiliary relays, circuit breakers and connection terminals. • bottom plate with one cable entry, with brush type cable entry gasket. • internal panel lighting with door switch command, 230V ac 16A socket with earthing contact (German standard) and heating element with thermostat control. • current and voltage transformers special connection blocks allowing test kits connection, without dismounting the field circuits. • circuit breakers for the DC and AC circuits. • Labelling is in Romanian language (English on request), with easy reading of labels with opened or closed door.

CONTROL, SIGNALLING AND PROTECTION PANELS FOR 110/20(6)Kv POWER STATIONS

29

Technical characteristics Rated voltage [Un]

measuring circuit: 100√3 Vac. protection circuit: 100V ac

Rated frequency [fn]

50Hz± 5%

Primary equipments operational voltage [Up]

6 ÷ 110kV

Current transformer nominal ratio

50 ÷ 4000 / 5 / 5 A

Voltage transformer nominal ration

6 ÷ 110 kV/ 100V / 100√3V

Auxiliary supply voltage

24, 48, 110, 220 VDC 100, 110, 230 VAC

Protection degree

IP31

Mounting conditions Installation

indoor

Ambient temperature during operation

-5÷40°C

Ambient temperature during transport, storage

-25÷50°C

Average operation ambient temperature within 24h

35°C

Relative humidity

maximum 50% la 40°C without condensation

Maximum operating altitude

2000m

Degree of pollution

3

Vibrations, shocks resistance

class 1

Overvoltage category

III

Electromagnetic environments

Type A

Lifetime service

25 years

30

CONTROL, SIGNALLING AND PROTECTION PANELS FOR 110/20(6)Kv POWER STATIONS

CELL LEA 110 kV

LEVEL 1 COMMAND (CELL) MEASURE

PROTECTION

AUTOMATION

CONTROL

LEVEL 2 COMMAND (CELL) Control room

LEVEL 3 Remote control REMOTE CONTROL REMOTE MEASURING REMOTE SIGNALING DISPATCHING

MAIN NUMERIC PROTECTION COMMAND CONTROL UNIT

EVENTS LOG PARAMETERIZATION

WORK STATION

110kV Feeder protection panel – Electrical schema

CELL TRAFO 110/20 kV

LEVEL 1 COMMAND (CELL) MEASURE

PROTECTION

AUTOMATION

CONTROL

LEVEL 2 COMMAND (CELL) Control room

LEVEL 3 Remote control REMOTE CONTROL REMOTE MEASURING REMOTE SIGNALING

NUMERIC PROTECTION UNIT

EVENTS LOG PARAMETERIZATION NUMERIC PROTECTION UNIT

110/20kV Transformer protection cabinet – Electrical schema

CONTROL, SIGNALLING AND PROTECTION PANELS FOR 110/20(6)Kv POWER STATIONS

31

LOW VOLTAGE BUSSINES UNIT Manolesti Deal 33 Botosani 710003, Romania T +40 231 532186 (87,88,89) F +40 231 532185 [email protected] www.electroalfa.ro

Sales Representatives Bucharest F (40-21) 3154177 [email protected]

Iasi F (40-232) 240440 [email protected]

Brasov F (40-268) 315522 [email protected]

Cluj Napoca F (40-264) 444461 [email protected]

Alexandria [email protected]

Bacau [email protected]

Sibiu F (40-269) 436438 [email protected]

Timisoara F (40-256) 223124 [email protected]

Craiova [email protected]

(c) 2011 Electroalfa. and Electroalfa’s logo are registered trademarks. LOW VOLTAGE BUSSINES UNIT CATALOG