About us / Archive
Company history
The original account of the company’s establishment, professional authorisation and completed projects.
From EpS to elektroprojekce.cz
Our earlier presentation used the EpS name and logo. The new website continues that history as elektroprojekce.cz, matching our long-established web address. It also continues the collaboration of two generations of the Sirový family in electrical design.
The business was established on 15 December 1993 with a trade registration for electrical system design. Following Czech Act No. 360/1992 Coll., an application was made for engineering authorisation in technological building systems. The following list of design and project management work was submitted as evidence of experience, confirmed on behalf of JIP-Papírny Větřní, a.s. by Jiří Zikmund, head of the energy department, and Ing. Jiří Peterka, the plant’s technical director.
| YEAR | PROJECT |
| 1985 | Installation of TG 1 generator – 6 kV, 15 MVA: electrical documentation and installation management. |
| 1986 | Central power factor correction at the main substation – 6 kV, 3 MVAr: documentation and electrical installation management. |
| 1987 | Computer centre power supply – 100 kVA transformer, 6000/220 V, separation of supply circuits: documentation and installation management. |
| 1988 | Pulping equipment connection – 6 kV, 250 kW motor: MV design documentation and MV installation management. |
| 1988 | Automatic fly-ash pumping control – two 150 kW W-E motors and valves: documentation and electrical installation management. |
| 1988 | Refurbishment of the grinder substation and addition of groundwood pumps – five 6 kV, 1350 kW synchronous motors and two 250 kW induction motors: documentation and installation management. |
| 1989 | Computer control of a boiler house (two 75 t/h, 6.4 MPa boilers): power systems, instrumentation and control interfaces and process sequences; documentation and installation management. |
| 1990 | Renewal of electricity metering at JIP Větřní with PC processing – around 700 meters, consumption and measurement accuracy assessment by department: documentation, software and implementation. |
| 1991 | Manual boiler-house drive control independent of the computer: documentation and installation management. |
| 1991 | Automatic de-ashing of boiler K12 – conveyors with timed sequences, sensors and a slag lift: documentation and installation management. |
| 1992 | Speed control of a waterworks pump – 6 kV, 630 kW, subsynchronous cascade and standby pump changeover: documentation and installation management. |
| 1992 | Standby arrangements for three ash-slurry pump sets with automatic level control and changeover: documentation and installation management. |
| 1993 | MV feedwater pumps – three 6 kV, 630 kW motors, twelve electrically operated valves and standby changeover: documentation and installation management. |
| 1993 | 22 kV plant power supply – two 22 kV, 1000 A switchgear bays: documentation and installation management. |
| 1994 | Electrical demand profile control: documentation, software algorithms and installation management. |
| – | Minor distribution system modifications – RM 330, RM 150, RO 3c. |
| – | Refurbishment of condensate stations: turbine hall, K1 and old boiler house. |
On 14 November 1994, Czech professional authorisation was granted: Authorised engineer in technological building systems (Czech Republic). Authorised professional’s registration number with
ČKAIT: 0100460
ČKAIT: 0100460
A project register was established for the authorised engineer, containing 193 projects from the company’s establishment to the end of 2011, completed under the name EpS = Elektroprojekce Sirový. This is a family business operating under the owner’s name. Over the years, we established relationships with installation and engineering companies, mainly in the energy sector. We maintain these relationships because regular clients in particular appreciate our approach to design. Further details appear in the article on design documentation.
Selected reference projects from the authorised engineer’s project register:
| YEAR | PROJECT | CLIENT |
| 1994 | Instrumentation and control for gas boiler K1. | Honeywell, s.r.o. Praha |
| 1995 | Speed control for feedwater pump No. 2. | JNS, s.r.o. Paskov |
| 1995 | K1 visualisation and a VB application for the TDC3000 data transfer protocol. | Honeywell, s.r.o. Praha |
| 1995 | Central power factor correction at the 22 kV substation, Plav water treatment plant. | JIVAK, a.s. Č. Budějovice |
| 1995 | Starting system for pump M201, 6 kV, 1250 kW. | JIVAK, a.s. Č. Budějovice |
| 1996 | Electrical and instrumentation design for the BTG steam pressure-reducing station, 40 t/h. | EZ Praha, a.s. |
| 1996 | PS7 paper machine refurbishment: electrical installation of the Jagenberg rewinder, VIB steam box, lighting and internal power distribution. | Chemoprojekt, a.s. Praha |
| 1996 | MV blower M6.3, 250 kW. | JIP-Papírny Větřní, a.s. |
| 1997 | Šebelův mlýn small hydropower plant: electrical installation and PLC control. | Sdružení SZS |
| 1997 | Stone-cutting machining centre: electrical documentation and PLC control. | Diamant Servis sro. Nový Rychnov |
| 1997 | Grinder No. 2, 6 kV, 1350 kW synchronous motor: MV and LV electrical systems. | JIP-Papírny Větřní, a.s. |
| 1998 | Renewed occupancy approval for paper processing premises and lighting refurbishment to Czech standards. | JIP-Papírny Větřní, a.s. |
| 1998 | Grinder plant extension: LV systems, artificial lighting and lightning protection. | PIK-JIP, s.r.o. Č. Budějovice |
| 1998 | Forced cooling for transformer T2, 22/6 kV, 8 MVA – PLC control. | Energetické strojírny Brno, a.s. |
| 1999 | JČE, České Budějovice Střed 22 kV substation: power and LV systems, cable diversions; enclosed ALSTOM SF6 switchgear. | Inprelog, s.r.o. Č. Budějovice |
| 1999 | 22 kV supply to the wastewater treatment plant. | JIP-Papírny Větřní, a.s. |
| 1999 | Supercalender No. 2, 6 kV drive. | JIP-Papírny Větřní, a.s. |
| 2000 | Plant network short-circuit calculations – 743 nodes in the 6 kV network. | ABB-Energo s.r.o. Praha |
| 2000 | R1 substation, 110/6 kV, 2 × 40 MVA: 6 kV systems and building fault signalling. | ABB-Energo s.r.o. Praha |
| 2000 | Grinder No. 5, 6 kV, 1800 kW induction motor: MV and LV systems. | JIP-Papírny Větřní, a.s. |
| 2001 | Plav water treatment plant: new 22 kV and 6 kV switchgear, an integrated design using partially enclosed SIEMENS SF6 technology. | SIEMENS, s.r.o. Praha |
| 2001 | ZČE, Škoda Plzeň main 22 kV substation: enclosed ALSTOM SF6 switchgear. | ALSTOM CZECH, s.r.o. |
| 2001 | Grinder No. 8, 6 kV, 1800 kW induction motor: MV and LV systems. | JIP-Papírny Větřní, a.s. |
| 2002 | Central compressed-air station at the TPCA car plant in Kolín, using a SIEMENS solution. | SIEMENS, s.r.o. Praha |
| 2002 | Frantschach Energo: surge protection for VM1 6 kV circuit breakers. | ERCOM, s.r.o. Štětí |
| 2002 | Husinec small hydropower plant: new switchboard and Schneider TSX07 PLC control system. | Sdružení SZS |
| 2003 | 6 kV power factor correction, 2 × 5148 kVAr. | Kompel, s.r.o. Brno |
| 2003 | Frantschach Energo: replacement of enclosed 6 kV, 4000 A busbars for T1 and T2 (110/6 kV, 40 MVA) and TG4 (6 kV, 40 MVA). | ERCOM, s.r.o. Štětí |
| 2003 | Electric heating of outdoor debarking conveyors, equipment sheds and auxiliary facilities; U-M91 PLC control networked via modems and CANbus. | JIP-Papírny Větřní, a.s. |
| 2004 | JČE, Mydlovary 110 kV substation: key-interlocked disconnectors for arc-suppression coils. | JČE, a.s. Č. Budějovice |
| 2004 | Písek heating plant: refurbishment of all incoming LV power switchboards. | Inprelog, s.r.o. Č. Budějovice |
| 2004 | TP Písek, Samoty heating plant: LV switchboard refurbishment and preparation of control-system connections. | Inprelog, s.r.o. Č. Budějovice |
| 2005 | Husinec small hydropower plant: OPLC-M91 control, PC modem communication over GSM and landline, SMS reporting. | Sdružení SZS |
| 2005 | Energy department control system: OPLC-M91, Vision260, CANbus, OPC server and Reliance3 visualisation; control of pressure-reducing stations, a 15 MVA steam turbine, waterworks and neutralisation. | JIP-Papírny Větřní, a.s. |
| 2005 | Paper processing: new production-hall electrical installation for paper processing equipment. | SMS Team, s.r.o. Chvalšiny |
| 2006 | Electrical installation of a steam heat exchanger for administration and maintenance buildings; UNITRONICS OPLC Vision 260 control, OPC server and Reliance3 visualisation. | JIP-Papírny Větřní, a.s. |
| 2006 | E.ON, Větřní 110 kV substation: key-interlocked disconnectors for arc-suppression coils. | E.ON Česká republika, a.s. Č. Budějovice |
| 2006 | Waterworks switchgear: LV and MV drives, coarse screens, vacuum filters and 630 kW MV pumps; UNITRONICS OPLC Vision 260, CANbus, OPC server and Reliance 3; pump control and standby changeover. | Elektro Štindl Větřní |
| 2007 | Visualisation of gas boiler K3 (40 t/h, 1.2 MPa), control of steam pressure-reducing station RS3 (40 t/h, 1.2/0.3 MPa), visualisation at eleven energy workstations and SMS alarms; Vision 260, OPC server and Reliance3. | UNITHERM s.r.o. Jablonec nad Nisou |
| 2007 | Electrical distribution documentation and short-circuit calculations for 165 nodes in a 22 and 6 kV network to ČSN EN 60909-0; protection settings and selectivity concept. | Duropack, Bupak Papírna s.r.o. Č. Budějovice |
| 2007 | PS7 refining line: two 6 kV, 500 kW motors; construction and retrofit of ABB SR-VF (IRONG) MV switchgear and refurbishment of a 6 kV bay. | JIP-Papírny Větřní, a.s. |
| 2008 | Restoration of Mazanec small hydropower plant in a former hammer mill: complete design and software, UNITRONICS OPLC Vision 260, automatic operation, SMS reports and alarms, and operating statistics. | Jiří Mazanec Český Krumlov |
| 2008 | PS7 refining line: instrumentation and control design for process equipment, connected to the local Delta V system. | JIP-Papírny Větřní, a.s. |
| 2008 | Replacement of the protection panel at the main 22 kV substation using MiCOM P122 relays: complete design, settings calculations, commissioning and protection testing. | Duropack, Bupak Papírna s.r.o. Č. Budějovice |
| 2009 | Backup power for Plav water treatment plant: design concept, short-circuit calculations, feasibility study, tender documents, MV switchgear extension and 6 kV/1600 kVA and 0.4 kV/700 kVA diesel generators. | JVS České Budějovice |
| 2009 | Replacement of cleaners on PS7 at JIP: electrical and instrumentation systems connected to Delta V. | Hajdo spol s r.o. Litovel |
| 2009 | Small rooftop PV systems for houses: independent inverter and panel design, surge and lightning protection assessment and design; UNITRONICS PLC and electric water heater to improve the financial benefit for the owner. | Private houses South Bohemia |
| 2010 | Small rooftop PV systems for houses: UNITRONICS PLC with an electric water heater or swimming pool to improve the owner’s financial benefit by limiting grid export. | Private houses South Bohemia |
| 2010 | Design for a beverage-carton processing line dismantled in Norway: 1600 kVA supply, drives, instrumentation and Delta V integration with 700 I/O. | JIP-Papírny Větřní, a.s. |
| 2010 | Periodic testing of 22 kV MiCOM P122 protection relays and addition of functions. | Duropack-Bupak Papírna s.r.o. Č. Budějovice |
| 2011 | Operating procedures for backup power at the water treatment plant: start-up and shutdown instructions and on-site testing. | Jihočeský vodárenský svaz Č. Budějovice |
| 2011 | Assessment records of external influences at a cardboard plant, including potentially explosive areas. | Smurfit Kappa Žebrák |
| 2011 | Replacement of 22 kV substation protection using MiCOM P122: complete design, settings calculations, commissioning and protection testing. | Duropack, Bupak Papírna s.r.o. Č. Budějovice |
| 2012 | “Bubnárna STTEN”: as-built documentation for a production hall with imported O-ring processing equipment, environmental classification and occupancy approval. | STTEN s.r.o. Vimperk |
| 2012 | RICE – Regional Innovation Centre for Electrical Engineering: tender documentation based on the bill of quantities for LV and MV power switchgear in the drive laboratory hall. | Západočeská univerzita Plzeň |
| 2012 | Technical assessment of MV and LV systems at TS2 following a failure of switchboard RH5; analysis of possible causes and proposed corrective measures. | JohnsonControls Autobaterie spol. s r.o. Česká Lípa |
| 2013 | Francis hydropower plant, 300 kW: generation metering under Czech Decree 82/2011, design of a 6 kV, 50 A metering bay and auxiliary consumption calculation. | Jihočeský vodárenský svaz Č. Budějovice |
| 2013 | Kamberk small hydropower plant, 15 kW: complete design and software for a former mill; UNITRONICS OPLC Vision 260, automatic operation, SMS reporting, alarms and control, and operating statistics. | Ing. Jan Jakab Kamberk |
| 2013 | 16 kW heat pump: supplier selection in China, purchase and installation arrangements; complete design and installation including a variable-frequency drive to maximise use of rooftop PV generation. | Private houses South Bohemia |
| 2013 | Earthing refurbishment for a high-voltage test facility, 600 kV/30 kJ: design meeting strict earthing resistance and interference requirements. | EGE spol s r.o. Č. Budějovice |
| 2014 | Sýkořice small hydropower plant, 22 kW: complete design and software for a refurbished plant on the Berounka; UNITRONICS OPLC Vision 260, automatic operation, SMS reporting, alarms and control, and operating statistics. | p. Aleš Vavrejn Sýkořice |
| 2014 | Gas CHP units of 9–37 kW for KOGET, s.r.o.: unit design, UNITRONICS OPLC control software and boiler-house design for planning approval; maximising the use of generated electricity. | KOGET s.r.o. Ing. Tomáš Jalůvka |
| 2014 | Instrumentation and control of the MELILOO thermohydraulic loop for experimental removal of corrosion products from liquid metal within ITER. Pb-17Li is used in the TBM to transport tritium to the separation unit. Vision 560 with twelve I/O modules and PC control via SCADA Reliance 4. | Ústav jaderného výzkumu, a.s. Ing. Lukáš Košek |
| 2015 | Dašice small hydropower plant, 90 kW: design, software and installation. Following Ing. Čižinský’s 2010 overhaul, a monitoring system, remote control and SMS monitoring were added. Three-phase UPS for sluice-gate operation during power outages; Vision 560. | Dašice small hydropower plant p. Tomáš Klásek |
| 2015 | STTEN production halls in Čkyně: planning-permission design for three rubber-seal processing halls, supplied from the LV grid with an expected demand of around 200 kW. | STTEN s.r.o. Dr. Jan Šťastný, MBA |
| 2015 | Measurement of optimum water-turbine speeds and transmission ratios in the Czech Republic. The equipment includes input and output RLC filters, so its roughly 300 kg weight also helps protect the plant being tested. | Small hydropower up to 50 kW Throughout the Czech Republic |
| 2016 | Plav water treatment plant, 22 kV switchgear: revenue metering in bays 02 and 09. | Jihočeský vodárenský svaz, Č. Budějovice |
| 2016 | Modernisation of a piglet production facility, SO01–SO05: electrical systems. | Integraz spol. s r.o., Vrbice |
| 2016 | Electrical installation at Přestavlky 13: conversion of a farm building into a house with five distribution boards. | Mr and Mrs Sirový, Chlumčany |
| 2017 | Measurement of optimum transmission ratios and turbine speeds at small hydropower plants. | Small hydropower up to 50 kW, throughout the Czech Republic |
| 2017 | Development and technical support of the 4riders.cz online shop. | 4RIDERS |
| 2017 | Servicing of MiCOM 22 kV overcurrent protection and short-circuit calculations coordinated with the E.ON distribution network. | MONDI BUPAK s.r.o., České Budějovice |
| 2018 | Malechov small hydropower plant, 37 kW: electrical design and software for a refurbished plant on the Úhlava; UNITRONICS OPLC Vision 560, automatic operation, SMS reporting, alarms and control, and operating statistics. | Ing. Milan Kovařík |
| 2018 | Voith mill, 6 kV, 200 kW: MV, LV and instrumentation systems; refurbishment of an IRODEL 6 kV bay, MV circuit-breaker retrofit, MiCOM P220 protection and Delta V integration. | JIP – Papírny Větřní, a.s. |
| 2018 | Extension of halls 4–7: electrical installation and process equipment for a pig-finishing facility. | Integraz, spol s r.o. |
| 2019 | LV process power distribution, sockets and lighting at the České Budějovice planetarium. | Baukonstrukt Chromý s.r.o. |
| 2019 | New 250 A LV distribution board for Mondi Bupak’s cardboard plant in České Budějovice. | H.S.E. s.r.o. |
| 2019 | Starch preparation plant and silo: external connections in cooperation with SRP Europe, Netherlands. | Mondi Bupak s.r.o. |
| 2020 | DS30 turboseparator, 110 kW LV: new five-section 1000 A LV switchboard, distribution wiring and Delta V integration. | JIP – Papírny Větřní, a.s. |
| 2020 | PS6 refining line: 2 × 6 kV/500 kW, 2 × 6 kV/250 kW and LV drives. New MV bay equipment and 6 kV distribution, instrumentation panels, process sensors, Delta V, LV switchboards and drives. | JIP – Papírny Větřní, a.s. |
| 2020 | Almig compressor, 250 kW LV: feeder bay and switchboard for the compressor, air dryer and instrumentation; modifications to the Unitronics control panel, Reliance integration and software for V260 and Reliance 4. | ENE20 s.r.o. |
| 2021 | Masterline 1 hall lighting: 44 SALUKA-LED ceiling fixtures, lighting calculations and wiring; three-phase supply with residual-current protection and sectional circuits for fault maintenance. | Mondi Bupak s.r.o. |
| 2021 | PSN separator, 55 kW: new outgoing feeder in the existing LV switchboard and Delta V integration. | JIP – Papírny Větřní, a.s. |
| 2021 | Garage, workshop and store: lighting, sockets, heat pump, sectional garage door, CCTV and networking. | Mr and Mrs Sirový, Praha |
| 2022 | Modification of pneumatic paper transport using Höckner design inputs: power connections from newly equipped 200 A and 125 A bays, lighting and interconnections between process units. | Mondi Bupak s.r.o. |
| 2022 | Mitsubishi line based on manufacturer design inputs: supply from newly equipped 600 A and 200 A bays, new power distribution board, hall lighting and IT cabling. | Mondi Bupak s.r.o. |
| 2022 | Measurement of optimum transmission ratios and turbine speeds at small hydropower plants. | throughout the Czech Republic |
| 2023 | PS4 refining line: 4 × 6 kV/250 kW and LV drives. New IRODEL bay equipment, instrumentation panels and process sensors, Delta V, LV switchboards and drives. | JIP – Papírny Větřní, a.s. |
| 2023 | PV systems of 5–50 kWp for houses, apartment buildings and agricultural halls, including lightning protection designs with separated or isolated systems using HVI conductors. | throughout the Czech Republic |
| 2023 | Cable sizing and protection calculations for a new LV switchroom at the Sahm s.r.o. glassworks. | Heřmanova Huť |
| 2024 | Standard LV diagrams: modification of existing LV compartment switchgear for remote meter reading over RS485. | ENE20 s.r.o. |
| 2024 | Chemical water treatment, 10 t/h: complete Unistream control of sand filters, anion and cation exchangers, and feedwater heating for a 40 t/h boiler; PC visualisation, email and SMS reporting, monitoring at seven workstations and mobile access through SCADA Reliance. | JIP – Papírny Větřní, a.s. |
| 2024 | LV connection for outdoor lighting at Žinkovy Castle. | Žinkovy Castle |
| 2025 | Use of surplus power from a 43 kWp PV system for water heating at a paper processing hall: circuit design, Unistream PLC, 16 proportional KYOTTO relays and 16 heating elements of 2.2 kW, with individual control on each phase. | SMS TEAM, s.r.o., Miloslav Mittasch |
| 2025 | Visualisation of the main 110/6 kV, 400 MVA substation with sectionalised double busbars and 32 bays: circuit design, measurement acquisition via Modbus/TCP servers, and visualisation, archiving and trending in SCADA Reliance. | ENE20 s.r.o. |
| 2025 | Design of a 50 + 48 kWp PV installation and inspection of the lightning protection system (LPS) for the primary school in Tlučná. | Municipality of Tlučná |