Electrical Equipment - Low Voltage - Electroalfa
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Low Voltage 2018-02-15T15:21:59+00:00

Electroalfa is a manufacturer with an extensive experience in the assembly of low voltage equipment having a portfolio with a full range of products:

technical assistance

training

service

warranty

PC/MCC Low voltage distribution panels DISMOD T3N Type, In≤ 6300A

Our own concept switchboard, the DISMOD T3N was completed based on the principles of modularity, currently offering what we think is the best quality and technical performance for a wide range of applications in low voltage networks.

The new generation T3N DISMOD panels improves the design of the previous family of low voltage switchboards (Dismod and Dismod T3) made by Electroalfa, improves the main technical performances and improves and extends the scope.

Completed based on the principles of modularity and versatility, the DISMOD T3N family panels lends itself to various applications of electrical drives (frequency converters, progressive starters, variable speed for DC motors, electric drive for special electric motors) and automation (automatic change over systems, processes monitoring and/ or control, data transmissions).

DISMOD T3N has applications in industry, in the commercial sector as well as in the tertiary sector, regardless of the complexity of the application, for a wide range of end user’s requirements.

The DISMOD switchboards represent the perfect combination of technical performance (top technical parameters, quality, operational reliability, flexibility, modular technology) and economic efficiency.

In addition to high quality products, we provide our customers with technical support for installation and commissioning, operating personnel training, maintenance and repairs during warranty, post-warranty service.

Type Test

The special performances of this electrical panel are certified by tests carried out in accordance with European standard IEC 61439 in national and international testing laboratories. The authorized trial labs where the tests were conducted are IPH Berlin (par of CESI Italy) and ICMET Craiova. The tests carried out in the CESI/ IPH Berlin lab are ASTA certified.

Electrical Technical Characteristics  
Rated voltage Un for the main circuit maximum 690 Vac
Rated voltage Un for the secundary circuit maximum 230 Vca or 220 Vcc
Rated voltage for operation Ue for the main circuit maximum 690 Vac ±10%
Rated voltage for operation Ue for the secondary circuit maximum 230 Vca ±10% sau 220 Vcc ±10%
Rated insulating voltage Ui for the main circuit maximum 1000 V
Rated insulating voltage Ui for the secondary circuit maximum 300 V
Rated impulse withstand voltage Uimp for the main circuit 8 kV; 12 kV
Rated impulse withstand voltage Uimp for the secondary circuit 4 kV; 6kV pentru Ui=300 V
Rated current of the unit InA 5850 A la Ta = +35ºC 5000 A la Ta = +50ºC
Rated current for operation of BCP maximum 6300 A
Rated current for operation of BCD for fixed functional units 2500 A; 2000 A
Rated current for operation of BCD for withdrawable/removable functional units 1000 A; 1250 A; 1500 A
Rated peak withstand current Ipk of BCP 286 kA
Rated peak withstand current Ipk of BCD 220 kA
Rated peak withstand current Ipk of of the protection circuit 171,6 kA
Rated short-term withstand current Icw of BCP 130 kA/1s
Rated short-term withstand current Icw of BCD 100 kA/1s
Rated short-term withstand current Icw of of the protection circuit 78 kA/1s
Time duration for Icw 1s
Rated diversity coefficient (RDF) 0,8
Rated frequency fn 50 Hz or 60 Hz
Grounding diagram, according to 3.3.2 of NP – I7 – 2011 TN-C or TN-C-S – at the user’s request TN-S, IT or TT – for special orders

Mechanical Technical Characteristics  
Earthquake resistance – according to SR EN 600368-3-3 0,5g; 1÷35Hz; 20s; biaxial; k=2; G=1,5
Resistance to free electric arc produced by an internal flaw – according to IEC TR 61641 80 kAef/0,3 s
IP Protection Class – according to SR EN 60529 IP20; IP40; IP41; IP 43 (IP54 at the user’s request)
IK protection degree against mechanical impacts - conform SR EN 62262 IK09
Number of functional units on the column (section) maximum 48
Form of internal separation 2a; 2b; 3a; 3b; 4a; 4b
Column height 2300 mm
Column width 300 mm ÷ 1200 mm
Column depth 700 mm; 1000mm; 1300mm

PC/MCC Low voltage distribution panels DISMOD T3, In≤ 5000A

DISMOD T3 low voltage main distribution board represent the optimal solution for a diverse range of applications in the low voltage networks (energy, infrastructure, industry, buildings).

Technical data  
Rated voltage Ue 690V
Rated current In 5000A
Rated short-time withstand current Icw/1sec 100kA
Rezistenta la actiunea arcului electric 80kA/0,3sec
Partition up to 4b

MCC-DISMOD In ≤3200A type low voltage distribution board, equipped with withdrawable slide-boxes and compartments, represent the optimal solution in electrical distribution, automation, motors control and protection, for all the industrial processes.

Technical data  
Rated voltage Ue 690Vac
Rated current In 3200A
Rated short-time withstand current Icw/1sec 80kA
Resistence to electric arc 80kA/0,3sec
Partition up to 4b

PC/MCC Low Voltage Switchboards SIVACON S8 type, Siemens licensed partner

Technical data  
Rated voltage Ue 690Vac
Rated current In maximum 7100A
Rated short-time withstand current Icw/1sec 150kA
Resistence to electric arc 65kA/0,3sec
Partition Up to 4b

Low voltage distribution panels for commercial and residential buildings XENERGY, Prisma Plus System, XL3 4.000

The distribution panels are electrical power distribution equipments for low voltage, realising the consumers powering-up from one, two or more energy sources.

Technical data  
Insulated voltage 660 V ca
Rated voltage 400; 500 V ca ±10%
Rated impulse withstand voltage (Uimp) 8kV
Rated frequency 50/ 60 Hz
Main busbar  
- rated current
- rated short-time withstand current (Icw/1s)
- rated peak withstand current (Ipk)
630/ 1000 A
maximum 25 kAef
maximum 50 kAef
Distribution busbar  
- rated current
- rated short-time withstand current (Icw/1s)
- rated peak withstand current (Ipk)
-630/ 1000 A
maximum 25 kAef
maximum 50 kAef
Normal protection degree IP31/ IP41 (IP54 by request)
Partitie 2b/ 3b

Main and secondary distribution boards

The electrical panels of this category are dedicated to customized applications for the distribution of energy inside buildings (commercial and business buildings, sports and cultural centers, industrial units and warehouses, office buildings, residential building complex, hotels, hospitals). The specificity of these applications has determined us to design a product where safety and reliability came first, but also in view of reducing to a maximum the time required for the interventions and/or future extensions.

At our clients’ request, we can provide technical support for the project’s design and implementation activity, technical assistance for mounting and commissioning the executed electrical panel, training of the operating personnel, maintenance and repair services for the warranty period, post-warranty service.

Technical Characteristics  
Rated insulating voltage (Ui) 1000 Vca
Rated voltage of operation (Ue) maximum 690V ca ±10%
Rated impulse withstand voltage (Uimp) 8kV
Rated current (In) 50 Hz
Curent nominal (In) 3200A
Rated short-term current (Icw/1sec) 80kA
Resistance to the action of the electric arc 80kA/0,3sec
Normal protection degree IP31/ IP41 (IP54 on demand)
Form of internal separation 2b/ 3b

Industial automation and control switchboards

The industial automation and control switchboards produced by Electroalfa are designed for the technological installations in the following fields of activity:

  • Transport and distribution of electrical energy
  • Water infrastructure: production/ transport drinkable water, collection/ treatment of waste water, irrigations/draining works
  • Climatization (HVAC) of civil and industrial buildings
  • Petrochemistry
  • Oil and gas extraction/transport

Depending on the client’s request, Electroalfa can perform and finalize the entire set of specific activities for these product categories:

  • Application analysis
  • Elaboration of the technical solution in principle
  • Elaboration of the Technical Project
  • Elaboration of Execution Documentation
  • Fabrication and testing in the factory
  • Technical assistance for mounting
  • Commissioning and testing in installation
  • Training of operating and maintenance personnel
  • Post-warranty maintenance and service
  • Modernization and upgrade

The industial automation and control switchboards can be produced as independent or integrated equipment in other manufacturing units of Electroalfa or other producers.

The technical solutions used by Electroalfa in the realization of industrial automatizations are based on PLC equipment type, Operating Panel, active devices for data communication and IBM PC compatible computers, their selection being determined by the functional requirements. Typical functions that can be executed include:

  • Industrial monitoring and process control (SCADA)
  • Control and data acquisition in the electrical energy distribution (tele-measurement, remote control, A.A.R., D.A.S.)
  • Technical and energetic management of buildings (BMS)

For the manufacturing of panels and sub-units of industrial automatizations, Electroalfa uses specific equipment made by well-known brands, such as SIEMENS, EATON, Schneider Electric, Wago.

For the manufacturing of electronic controls, Electroalfa offers to the clients products based on equipment of the following type:

  • Soft Starter
  • Frequency Convertor
  • Speed variator for continuous current motor

For the manufacturing of panels and sub-units of electronic controls, Electroalfa uses products made by well-known brands, such as SIEMENS, EATON, Schneider Electric, ABB, Danfoss, Rockwell Automation.

Control and protection panels for high voltage electrical substations

The 110 kV control and protection panels are aimed for transformer substations (mostly aimed aelectrical power supply and distribution companies) to provide protection, control, interlocking, automation and SCADA functions. The protection systems are performant and their configuration is compatible and integrated into the control-protection systems with hierarchical, distributed and open type architecture, fully redundant and dedicated to the present EMS/ SCADA applications.

Configuration types:

  • 110kV lines protection panels
  • 110/20(6)kV transformer protection panels
  • 110kV coupling protection panels
  • SCADA panels
  • Arc-suppression coil automation panels

Compliant with the technical standards of nationwide power generation, transport and distribution companies such as Transelectrica (the national transmission operator), CEZ Group, E.ON Group, Electrica Group (area distribution operators).

Depending on the application, the numerical terminals can have a different number of DI digital inputs, AL analogical inputs and DO digital outputs, different supply voltage and graphic or alpha-numeric display. The communication protocol will be selected depending on the requirements of the SCADA system where the protection equipment will be integrated, the most usual one being IEC 61850.

Technical Characteristics  
Rated voltage [Un] - circuit measure 100√3 Vca
- circuit protection 100 Vca
Rated frequency [fn] 50Hz± 5%
Operating voltage of primary equipment [Up] 6 ÷ 110kV
Trafo current transformation ratio 50 ÷ 4000 / 5 / 5 A
Trafo voltage transformation ratio 6 ÷ 110 kV/ 100V / 100√3V
Voltage of secondary and control circuits 24, 48, 110, 220 Vdc br> 100, 110, 230 Vac
Protection degree IP31

Normal Operating Conditions  
Mounting place interior; in the control room
Temperature of the environment during operation -5÷40°C
Temperature of the environment during transportation, storing and mounting -25÷50°C
Average environment temperature in 24h 35°C
Air relative humidity maximum 50% at 40°C
Maximum altitude 2000 m
Pollution class 3
Resistance to vibrations, shocks, earthquakes Class 1
Over-voltage class class III
Electromagnetic media medium A
Lifetime 25 years

400/230 Vac and 48…220Vdc auxiliary services cabinets

The 400/230 Vac and 48…220Vdc auxiliary services cabinets are designated to supply the low voltage consumers within the 110/20(6)kV transformer substations of the power supply and distribution companies: Electrica SA, CEZ Group, ENEL Group, E.ON Group; Transelectrica’s 400/220/110kV connection and transformer substations; hydro power plants; thermal power plants.

Technical data Alternativ current Direct current
Rated voltage Ue maximum 400Vca maximum 220Vcc
Rated current In maximum 630A maximum 250A
Rated short-time withstand current Icw/1sec 25kA 16kA
Protection degree IP43 IP43

Consumers of own services are supplied partly with alternative current at the voltage of 400/230 VAC (except certain consumers, for whom the labor safety requirements impose the use of lower voltages) and partly continuous current, the possible voltages being 24, 48, 110, 220 VDC.

As a general rule, the installation of the main distribution of a.c. comprises a simple bar system divided into two sections by cross coupling, the supply of the own service bars being made from the own service transformers, which can supply each the entire power requested by the own service consumers. The two sources can function permanently connected or with a source normally disconnected, playing a role of backup, with the possibility of designing an AAR installation for the automatic selection of the supply source.

For supplying the continuous current consumers, beside the rectifiers connected to the own service bars of alternative current, usually there is an independent source made up of one or two batteries. The installation of main continuous current distribution is generally made up of a simple collector bars system divided in two sections by cross coupling.

Technical Characteristics Cabinets of alternative current services:
Rated voltage of operation (Ue) 400/230V
Rated voltage of insulation (Ui) 690V
Rated frequency (fn) 50Hz
Rated impulse withstand voltage (Uimp) 8kV
Rated current (In) 630A
Rated short-term withstand current (Icw/1s) 25kA
Rated peak withstand current (Ipk) 52,5kA

Cabinets of continuous current service:  
Rated voltage of operation (Ue) 24, 48,110 VDC
Rated voltage of insulation (Ui) 690V
Rated impulse withstand voltage (Uimp) 8kV
Curent nominal (In) maximum 250A
Rated short-term withstand current (Icw/1s) 16kA
Rated peak withstand current (Ipk) 32kA

Operation Conditions  
Climate group WDr/CT(moderate climate: hot/dry/temperate cold)
Mounting place interior
Temperature of the ambient environment during operation -10°C…+40°C
Temperature for the duration of transportation, storing and mounting -40°C…+55°C
Humidity 50% at +40°C, 90% at +20°C
Maximum altitude 2000 m
Pollution degree 3
Over-voltage category categoria III
Electromagnetic media mmedium A
Protection degree IP43

Assemblies for power distribution in public networks

Electroalfa assemblies for power distribution in public networks are equipped with the safest and most reliable. Judiciously tested and evaluated in the authorised laboratories in Romania, our products comply with the latest European standards. Our products comply with the technical standards of the companies providing power generation, transport and distribution nationwide as Transelectrica (the national energy transmission operator), CEZ Group, E.ON Group, Electrica Group (area distribution operators).

Distribution panels for transformer substations

The distribution panels are used in network transformer substations, equipped with 250 ÷ 630 (1000) kVA, 20/0, 4kV power transformer, for supplying power to public buildings, residential, commercial, industrial consumers and street lighting.

Technical data  
Rated power 250÷630 (1000)kVA
Thermal and usage rated current/td> 360A÷910 (1440)A
Current transformers current 400÷1000 (1500)/ 5A, class 0,5
Rated voltage 400/ 230 V ca
Insulation voltage 690 V c.a.
Rated frequency 50 Hz
Normal protection degree IP 00 (open variant); IP 20 (semi-closed variant)

0,4kV power distribution panel

The distribution panels are designed for network transformers substations on one or two pillars, equipped with 40÷250 (400)kVA, 20/0, 4kV power transformers.Their role is to supply rural /suburban consumers and for street lighting.

Type:
- metallic enclosure
- polycarbonate enclosure

Technical data  
Rated power 40÷250 (400)kVA
Thermal and usage rated current 58A÷362 (578)A
Current transformers current 50÷400 (600)/ 5A, class 0,5
Rated voltage 400/ 230 V c.a.
Insulation voltage 690 V c.a.
Rated frequency 50 Hz
Normal protection degree IP 54 (metallic enclosure); IP 44 (polycarbonate enclosure)

Connection box

The connection box is used in low voltage distribution networks for supplying power to household users (apartment buildings, houses, etc.) and to public administration buildings.

Type:
- metallic enclosure
- polycarbonate enclosure

Technical data  
Rated current maximum 400 A main circuits; maximum 160 A secondary circuits
Rated voltage 400/ 230 V c.a.
Insulation voltage 690 V c.a.
Rated frequency 50 Hz
Normal protection degree IP 54 (metallic enclosure); IP 44 (polycarbonate enclosure)

Three phase metering and protection panel

The three phase metering and protection panel board is used in the low voltage distribution network to supply power to household consumers or public buildings.

Type:
- metallic enclosure
- polycarbonate enclosure

Technical data  
Thermal and usage rated current 16÷250A
Rated voltage 400/ 230 V c.a.
Insulation voltage 690 V c.a.
Rated frequency 50 Hz
Normal protection degree IP 54

Single phase metering and protection panel

The single phase metering and protection panel board is employed in the low voltage final distribution network to supply single phase power to individual users.

Type:
- metallic enclosure
- polycarbonate enclosure

Technical data  
Thermal and usage rated current 16÷40A
Rated voltage 230 V c.a.
Insulation voltage 690 V c.a.
Rated frequency 50 Hz
Normal protection degree IP 54

Distribution and metering panel

The distribution and metering panels are employed for the distribution, monitoring and protection of households power supply circuits.

Type:
- metallic enclosure
- polycarbonate enclosure

Technical data  
Thermal and usage rated current maximum 250 A three-phase circuit; maximum 32 A single-phase circuit
Rated voltage 400/ 230 V ca
Insulation voltage 690 V ca
Rated frequency 50 Hz
Normal protection degree IP 30 (apparent) IP 43 (embedded) IP 54 (outdoor)

Low voltage three phase junction box

The junction box is used in low voltage distribution networks for public lighting underground or overhead cables connection and for short circuit protection.

Technical data  
Thermal and usage rated current maximum 100A
Rated voltage 400/ 230 V ca
Insulated voltage 690 V ca
Rated frequency 50 Hz
Normal protection degree IP 54

Low voltage three phase selective box

The selective box is used in low voltage distribution networks to provide selective and sensitive protections to short circuit currents, after the fitting point, before the end of line and its derivatives.

Technical data  
Thermal and usage rated current maximum 250A
Rated voltage 400/ 230 V ca
Insulated voltage 690 V ca
Rated frequency 50 Hz
Normal protection degree IP 54

Public lighting main switchboard

The public lighting main switchboard is used in in low voltage networks to supply power to public lighting, in single and three phase systems, manual or automatic operation, as well as for electricity metering.

Technical data  
Thermal and usage rated current maximum 63 A for single-phase version; maximum 100 A for three-phase version
Rated voltage 230 Vac for single-phase version; 400/230 Vac for three-phase version
Insulated voltage 690 V ca
Rated frequency 50 Hz
Normal protection degree IP 54

Power Factor Correction equipment

The power factor correction equipment adjusts the reactive power consumed by the inductive receivers for achieving a power factor in accordance with the current legislation.

Technical data  
Reactive rated power 25÷400kVAr
Number of reagulation steps 3÷12 steps
Rated voltage 400/230 V c.a.
Insulated voltage 690 V ca
Rated frequency 50 Hz
Normal protection degree IP 30 (indoor); IP 54 (outdoor)

AC/DC power supply solutions for telecom applications

Intended for indoor or outdoor use the power supply sources for the GSM are based on a modular cabinet concept and represents a new approach on how they can increase the capacity of a DC cabinet for telecommunication applications.

  • Indoor cabinets
  • Outdoor cabinets
  • Outdoor cabinets with integrated thermal management
  • Outdoor cabinets with built-in environment control
  • Specific power supply cabinets for telecom sites: PMB, SWAC, LDB

Indoor modular cabinets

The cabinet will be used to power telecommunications equipment including mobile networks. The power will be supplied with grounded “+” and the power system will be “-48Vdc” type (upon beneficiary’s request also other voltage levels can be provided).

The modular design concept allows:

  • Easy adaptation to conditions on site
  • Compliance with requirements related to weight density on the floor
  • Ease of transport
  • Easy Expansion

Technical data  
Maximum number of rectifiers 12x2000W
Supply voltage  
single-phase 230Vac
three-phase 230Vac (Δ)
three-phase 400Vac+N (Y)
Frequency - 45 ± 66Hz
Sizes (LxAxH)
600x600x1400mm
600x600x1800mm
600x600x2200mm
600x600x2000mm (OPTIONAL)
Approximate weight, with no rectifiers and bateries 1400mm/ 70kg 1800mm/ 90kg 2200mm/ 110kg
Normal protection degree IP20

Outdoor cabinets

The outdoor cabinet is meant to being used on GSM site and is designed to withstand different environmental conditions, the microclimate inside the cabinet being achieved in accordance with the operational environmental temperature and humidity (specified by the customer). The microclimate inside the cabinet is preserved at the required level required by the customer via the heating management units (heaters for temperatures below 10°C and/or fans, integrated air/ air heat exchangers for temperatures above 25°C).


Technical data  
Maximum number of rectifiers 12x2000W
Supply voltage  
single-phase 230Vac
three-phase 230Vac (Δ)
three-phase 400Vac+N (Y)
Frequency - 45 ± 66Hz
Sizes (LxAxH)  
  700x800x2250mm
  1350x800x1850mm
Approximate weight, with no rectifiers and bateries 2250mm/ 300kg 1850mm/ 350kg
Normal protection degree IP54

Outdoor cabinets with built-in environment control

The outdoor cabinet is designed for a diversity of applications and can be adapted to suit different specific requirements. The cabinet is very suitable for power equipment, batteries, telecommunications equipment, all integrated into a robust and costeffective package. The cabinet can be equipped with wireless components, optical fibre, TV cable, DSL and WLAN applications. The microclimate inside the cabinet is preserved at the required level required by the customer via the heating management units (heaters for temperatures below 10°C and/ or fans, integrated air/ air heat exchangers for temperatures above 25°C).

The specific cooling capacity is about 22W/K, subject to the fans’ speed. The heat exchanger’s input power is 48 VDC, total 30 W for 4 fans (maximum 7.5W for each fan).


Technical data  
Maximum power 120W
Rated current 2,5A
Rated voltage 48 V cc
Available space 6U (1U=44.45mm)
Normal protection degree IP 55

Outdoor cabinets with built-in environment control

The outdoor cabinet is designed for a diversity of applications and can be adapted to suit different specific requirements. The cabinet is very suitable for power equipment, batteries, telecommunications equipment, all integrated into a robust and costeffective package. The cabinet can be equipped with wireless components, optical fibre, TV cable, DSL and WLAN applications.


Technical data  
Supply voltage  
single-phase 230Vac
three-phase 230Vac (Δ)
three-phase 400Vac+N (Y)
Frequency - 45 ± 66Hz
Normal protection degree IP 55

Specific power supply cabinets for telecom sites: PMB, SWAC, LDB

The electric boards PMB, SWAC, LDB are used in low voltage distribution network for telecom network consumers electricity supply.


Technical data  
Thermal and usage rated current 63A
Rated voltage 400/ 230 V ca
Insulated voltage 690 V ca
Rated frequency 50 Hz
Normal protection degree IP 54