Emergency Procurement: Supply of Frequency converters and electric motors to Ukraine

New amendment added #2: Dear BiddersPlease be advised that the below amendments are made to the RFQ requirements.The requirements for lot 1 frequency converters (Section II Schedule of Requirements) has been amended as below:Paragraph 2.17 (“ Each phase must have additional batteries (the possibility of bypassing a damaged power element), which in the event of a malfunction are short-circuited, so that the frequency converter continues to operate”) is added to the Schedule of Requirements.Paragraph  2.18 (“The frequency converter must have an additional switchgear, in the form of a cell with a vacuum switch, which supplies the motor directly from the frequency converter. The vacuum circuit breaker must have an electromechanical interlock with the direct start cell, which makes it impossible to operate both circuit breakers simultaneously. In case of damage to the frequency converter, the switch to power the motor from the converter is turned off. This allows the motor power switch to be switched on from the mains by direct start”) is added to the Schedule of Requirements.Paragraph 2.17 Packaging requirements is now numbered Paragraph 2.19.Please check the amended document RFQ_Section_II_Schedule of requirements_Frequency converters and electric motors_RFQ_2024_53616_rev_2 in the Documents section. Please use comparative data tables from this amended (rev_2) edition to fill in and submit the Form F: Technical Bid Form.Thank you.

New clarification added: Please consider adding a separate clause with requirements to have power cell bypass functionality.Dear BidderThank you for your request.The requirements will be amended soon. Please follow notifications for this RFQ on www.ungm.org.Thank you.

New clarification added: I kindly ask you to clarify again in a more clear way:1. Is power cell redundancy required? (i.e. each phase has extra power cells which are short-circuited in case of failure so the frequency converter remains working) 2. Is frequency converter bypass also required? (i.e. extra switchgear that allows the motor to be powered directly from the grid in case of frequency converter failure)3. Is SCADA for overall drives control also included into the scope of supply?Dear BidderThank you for your request. Please find answers below.1. Reservation of power elements is required. The requirements will be amended soon. Please follow notifications for this RFQ on www.ungm.org.2. A frequency converter bypass is required, which will allow working with two motors. The requirements will be amended soon. Please follow notifications for this RFQ on www.ungm.org.3. SCADA for general drive control is not included in the scope of the delivery under this RFQ.Thank you.

New clarification added: Are we able to get VAT exemption, for this RFQ?Dear BidderThank you for your request.No, this project is not VAT exempt. As stated in the RFQ Particulars “All quotations shall be submitted incl. VAT and all applicable taxes as well as customs duties, excise duties and any other expenses needed to meet the delivery requirement DDP Ukraine Incoterms. The project within which this RfQ is conducted is not tax exempt.”Thank you.

New clarification added: 1. You gave an answer that manual bypass is required (18/09/24). Medium voltage drives may have two different bypasses: first bypass - power cell bypass (to prevent drive trip when one power cell (power module) trips, bypass helps to keep drive working without one power sell in the phase), second bypass – the drive bypass (disconnecting motor cable from the drive output to achieve direct online start if the drive is broken or under service maintenance). What kind of bypass was mentioned?2. As you answered, the pump alternation function is implemented in the automation cabinet. This information does not clarify requirements for the drive.For the alternation purpose drive should have special output relays (min 4 pcs) to send signals to motor MV circuit breakers or contactors. Besides, 4 pcs of additional MV circuit breakers or contactors should be available to switch motors connection from the drive output to the main supply (DOL) and vice versa. If you have electrical line diagram or principal diagram of control system, it will help to offer the right solution. 3. There are some contradictory requirements founded: P.2.8 The motor speed must be set via the control panel and an analogue input, P2.12.7 Built-in PID pressure regulator. It is not clear what kind of reference will be sent to the drive from SCADA (external PLC). It means that drive can work in close loop mode and speed open loop mode. If the drive should work in close loop mode (PID pressure control) the reference should be the pressure setpoint (not speed reference) and feedback from pressure sensor should be connected directly to the drive analog input. Please clarify.Dear BidderThank you for your request. Please find the answers below.1. Medium voltage drives – first bypass – power cell bypass (to prevent drive trip when one power cell (power module) trips.2. In case the frequency converter is installed for 2 pumps, the controller to be installed in the pump control cabinet (automation cabinet) will set the operating time of each pump. The pump control cabinet is not included in this delivery. The requirements for output/input signals are given in clauses 2.6.22- 2.6.27, Section II: Schedule of requirements.3. The basis for the controller is the pressure setpoint . The actuator operates in the set cycle mode (PID pressure control). As for the SCADA system, via it the parameters are monitored. The minimum parameters that must be displayed are specified in clause 2.11.5, Section II: Schedule of requirements.Thank you.

New clarification added: We ask for clarification as to whether the price of the tender offer should include supervision of installation or commissioning work on frequency converters?Dear BidderThank you for your request. Supervision of installation or commissioning works are not required and are not included in the scope of the requirements for this RFQ.Thank you.

New clarification added: 1.8.1.3.4          Serial number. It is not possible to give a serial number of product that hasn’t been manufactured yet.2.6.6    Output frequency resolution - minimum 80 Hz. What is the reason to have such high value of output frequency as the motors should not work above 50 Hz due to higher energy consumption and possible equipment damage?2.7        The frequency converter can be operated from the local control panel and remotely via the control panel in the control room. - What does it mean to be operated with remote control panel? Is it existing panel, working station or additional panel (requirements to remote control panel should be given or clarified).2.12.15             The Bidder must provide a copy of the working software on a flash USB (must be provided with the goods upon delivery) – What does it mean to provide a copy of working software? Could you please clarify?2.12.16             The software should be adapted for hot water supply systems with the possibility of setting an hourly operating mode – What are the requirements for hourly operating mode?2.12.11             Availability of pump alternation function – How can this function be implemented for the medium voltage drive without additional external equipment like MV switchgears? It seems every single drive should control only 1 motor. Could you please clarify.Dear BidderThank you for your request. Please find the answers below.1.8.1.3.4. Serial number. The concept of a serial number is used for products that are produced in series (one for a number of identical products). The serial number is not the factory number for each individual transformer.2.6.6. Output frequency resolution - minimum 80 Hz. The output frequency resolution (usually from 0.1 to 75-80 Hz) allows you to adjust the motor speed with an error. If you specify a resolution of up to 50 Hz, the controller will output a maximum frequency value of 50 Hz with a large error in the current waveform. Most manufacturers of frequency converters specify output frequency resolution from 0.1 Hz to at least 75 Hz, with a margin.2.7. The control panel in the control room is the existing SCADA system. There are no requirements for it in this procurement. Requirements for input/output signals are reflected in the clauses 2.6.22-2.6.27 of the Section II Schedule of Requirements.2.12.15. The frequency converter must be supplied with the software loaded. Based on our experience, it is sometimes necessary to reload the software into the controller, so we require a copy of the working software.2.12.16. The mode of operation of the pumps (hourly, depending on the hot water consumption) will be set in the controller of the Utility Company's service, according to the corresponding load schedule. For this purpose, there is a requirement for the level of software access (clause 2.12.14). The controller must be able to program the maintenance of the set working pressure depending on the time of day, 24/7.2.12.11. The pump alternation function is implemented in the automation cabinet to which the medium voltage drive is connected.

New clarification added: We have been working for your tender and we are planning to submit a proposal.However we have received a request for clarification from our manufacturer.Below you can find the clarification and we kindly ask you to clarify it.We have reviewed your specification with our expert team and made an assessment. I would like to briefly share our evaluation with you.The system to be installed is at the boundary between medium and high voltage, with a critical voltage level of 6000V, or 6kV. Accordingly, the converter and motor powers are also very high. First of all, we sincerely want to ask this: Is there a professional team available at the project site that can handle the sequential installation of the transformer, converter, and motor? Setting up and commissioning the system is indeed a challenging process and carries a high risk. Additionally, maintenance and repairs in the post-installation period will also require a professional team.High-voltage converters are 8 to 10 times more expensive than low-voltage converters, and their delivery time is 8-12 months. It is not possible to find them in stock anywhere. To reduce risks and costs, and to ensure safer field operations in a more secure environment, a 0.4kV transformer can be connected to the 6kV installed transformer, lowering the voltage from 6000V to 400V. Then, 400V frequency converters and pumps can be placed right in front of it. Working at low voltage not only eliminates risks but also offers significant cost savings.For this reason, we are recommending 0.4kV drives in the attached document. Additionally, if you could send the specification, single-line diagram, and project for your 6kV/0.4kV transformer, we can assist with the manufacturing of this transformer as well. We also would like to know whether you request board for convertors or not.Dear BidderThank you for your request. The installation of the converters are not included in the requirements for this RFQ. Installation will be done by the beneficiary of the project who has qualified personnel to do it.The required voltage is 6 kV - please refer to the Section II Schedule of Requirements.Thank you.

New clarification added: In the updated version of "Section II: Schedule of requirements" no information is provided whether bypass cabinet is needed. Please clarify if bypass cabinet is needed, and if it is needed,  what kind of bypass should it be: a) manual bypass (activated manually from control panel), b) automatic bypass (activated automatically in case of frequency converter failure), c) automatic bypass with reactor cabinet and phase synchronization (automatically switches the motor directly to the mains on the run after achieving 50Hz).  Dear BidderThank you for your request.Manual bypass is required (activated manually from control panel). Thank you.

New amendment added #1: Dear BiddersPlease be advised that the below amendments are made to the RFQ requirements.The requirements for lot 1 frequency converters (Section II Schedule of Requirements) were amended as below:Clause 2.3 is now amended to be read as follows: “The frequency converter should change the frequency of the electric current, which makes it possible to regulate the speed of induction motors by creating a voltage of the required frequency and amplitude at the output of the converter.”Clause 2.6.12 is removed from the requirements.Clause 2.6.20 (clause 2.6.19 in the updated rev_1 requirements) is now amended to be read as follows: “Protection level of the converter housing: not less than IP42”.Clauses 2.12.13 - 2.12.16 are added to the paragraph 12.12 Requirements for the software capabilities of the frequency converter.Paragraph 2.14 (“The frequency converter is installed next to the building (outdoor), on an open site, in an external module”) is added to the Schedule of Requirements.Paragraph  2.15 (The frequency converter must be supplied with an external module) is added to the Schedule of Requirements.Paragraph 2.16 (Minimum requirements for the external module) is added to the Schedule of Requirements.Paragraph 2.14 Packaging requirements is now numbered Paragraph 2.17.Please check the amended document RFQ_Section_II_Schedule of requirements_Frequency converters and electric motors_RFQ_2024_53616_rev_1 in the Documents section. Please use comparative data tables from this amended (rev_1) edition to fill in and submit the Form F: Technical Bid Form.Also the deadline for submission is extended till September 30, 2024, deadline for clarifications is extended till September 23, 2024.Thank you.

New clarification added: 1. Do you have the dimensions of the rooms where the frequency converters should be installed?2. Do you have the maximum allowable dimensions for the frequency converters and  IP54 cabinets in which they should be installed?3. If the frequency converters are going to be installed in the heating rooms, what is the reason to have -15C operating temperature?Dear BidderThank you for your request. Please find the answers below.We do not know exact locations where the converters should be installed. Frequency converters must be suitable to be installed outside. Please be advised that the requirements will be updated (basic requirements to the cabinets will be provided) and amended requirements will be published soon. Also the deadlines for bid submission and clarifications will be extended.Please follow notifications for this RFQ on www.ungm.org.Thank you.

New clarification added: According to the answer published by you "For the purpose of the tender (clause 2.6.12 of the Distribution of the II Variable System) "The construction of the converter – IP54", which means that the changes are due to the installation in the shafs." and taking into account your statement about the need to supply medium-voltage frequency converters in cabinets with IP54 design, we ask you to provide the terms of reference for these cabinets, since the dimensions of the frequency converters themselves are for the power specified by you, will be about 2-3 meters wide, 2-2.5 meters high, 1-1.5 meters deep; with the weight of one frequency converter from several tons. To embed (install) such medium-voltage frequency converters, many factors must be taken into account, namely: the required volume and type of ventilation of the cabinet (flow-through/forced/mixed) in which they are installed; permissible width of the corridor for personnel and access to the compartments of the medium-voltage frequency converter; the number of doors and gates in the cabinet for repair and revision work; type of walls and roof; indicate the need for cable supply (bottom, top, side); the presence of a panel and an auxiliary power input, cabinet lighting, etc. Thus, the cabinets for these medium-voltage frequency converters will in fact be block-modular buildings, for which a technical specification from the Customer is definitely required. The presence of such a technical specification will be interpreted equally by all tenderers and will allow a fair comparison of technical proposals and, accordingly, the cost. Considering the above, I ask you to send a technical specification for block-modular buildings (cabinets) with an IP54 degree of protection. Dear BidderThank you for your request. Dear BiddersPlease be advised that the requirements will be updated (basic requirements to the cabinets will be provided) and amended requirements will be published soon. Also the deadlines for bid submission and clarifications will be extended.Please follow notifications for this RFQ on www.ungm.org.Thank you.

New clarification added: I ask for guidance regarding the following - Is it possible to supply IP 54 frequency converters that initially have such a level of protection and do not require additional installation in any separate cabinets. Thanks for the reply.Dear BidderThank you for your request. According to tender requirements (clause 2.6.12 of the Section II Schedule of Requirements) “Converter cabinet design – IP54” which by default means that converters must be supplied installed in cabinets.Thank you.

New clarification added: You state that the frequency converter will be installed in a cabinet with IP54 protection.Could you please confirm if the IP54-rated cabinet in which the converter is to be installed is included in the scope of this tender?Based on the tender documents provided, it appears that the scope is limited to the frequency converter only.We appreciate your clarification on this matter.Dear BidderThank you for your request. Please find the answer below.According to tender requirements (clause 2.6.12 of the Section II Schedule of Requirements) “Converter cabinet design – IP54” which by default means that converters must be supplied installed in cabinets with minimum IP54 protection.Thank you.

New clarification added: 1. In particular,clause 2.6.12 states “Converter cabinet design – IP54,” while clause 2.6.20 mentions “Protection level of the converter housing: not less than IP21.”These two clauses appear to be contradictory, as the terms "cabinet" and "housing" generally refer to the same things.Could you please confirm whether proposals with a cabinet or housing rated below IP54 will be considered acceptable?2. Additionally, clauses 2.6.16 and 2.6.17 specify the ambient operating temperatures of -15...+40°C without power reduction and -15...+60°C with power limitation, respectively.Given that these specifications, along with the IP protection rating, suggest the potential for outdoor installation,could you confirm whether the converter is intended for installation in indoor non-heated premises or even outdoor environments?Dear BidderThank you for your request. Please find the answers below.1.The requirements for the cabinet in which the converter is installed is IP54, the requirement for the frequency converter is IP21. Lowering the degree of protection is not desirable.2.Frequency converters will be installed in closed, heated rooms.Thank you.

New clarification added: Can you confirm the using place's attitude is less than 1800m or not?Dear BidderThank you for your request. We confirm that the using place's attitude for converters is less than 1800 m. Thank you.

New clarification added: 1. The delivery time for this tender is declared as 12/25/24, taking into account that the production of these products will take from 4-6 months, is it possible to extend the delivery time by changing the tender.2. The technical specifications provide for a degree of protection IP54, but these frequency converters for 6 kV mainly have a degree of protection IP44, in order to achieve the required IP54 it is necessary to place them in a special container to obtain the necessary protection. Is it possible to offer frequency converters with a degree of protection IP44.Dear BidderThank you for your request. Please find the answers below.1. Bidders are requested to provide the realistic delivery deadline they can meet in table “C. Delivery requirements” for each lot (“DDP Incoterms: _______(please insert number of days here)________calendar days from the date of PO signature”). Please provide the realistic delivery deadline your company can meet.2. As provided in the Section II Schedule of Requirements clause 2.6.12.”Converter cabinet design – IP54”, clause 2.6.20. “Protection level of the converter housing: not less than IP21”. Please refer to the Section II Schedule of Requirements.Thank you. 

New clarification added: 1, Do you want the Frequency converters all-in-one machine?2, What machines do those Frequency converters drive?3, Could you please send the drawings of those existing Motors? Then we can design the same installation dimensions.Dear BidderThank you for your request. Please find the answers below.1.Yes, Frequency converters all-in-one machine.2.Frequency converters are to drive pumping equipment for pumping mains water, smoke extractors, fans.3.We can not share any drawings.Thank you.

New clarification added: 1. could you please send your motor's nameplate, load, attitude to me? 2. may I know if you need automatic and manual bypass cabinets?3. if you have projects' diagrams, could you send them?Dear BidderThank you for your request. Please find the answers below.1. Item 1 - Frequency converter 630 kW, current - 73 A, rotation frequency - 1480 rpm.Item 2 - Frequency converter 400 kW, current - 38 A, rotation frequency - 1480 rpm.Item 3 - Frequency converter 320 kW, current - 38 A, rotation frequency - 1480 rpm.Item 4 - Frequency converter 250 kW, current - 29 A, rotation frequency - 1480 rpm.Item 5 - Frequency converter 220 kW, current - 27 A, rotation frequency - 1480 rpm.2. Automatic bypass cabinets are required.3. We can not provide any project diagrams.Thank you.

New clarification added: Regarding Lot #1... Please provide the nominal currents or rotational speeds of the motors to which these frequency converters are planned to be connected.This information is necessary for the correct selection of frequency converters.Dear BidderThank you for your request. Please find the answer below.Item 1 - Frequency converter 630 kW, current - 73 A, rotation frequency - 1480 rpm.Item 2 - Frequency converter 400 kW, current - 38 A, rotation frequency - 1480 rpm.Item 3 - Frequency converter 320 kW, current - 38 A, rotation frequency - 1480 rpm.Item 4 - Frequency converter 250 kW, current - 29 A, rotation frequency - 1480 rpm.Item 5 - Frequency converter 220 kW, current - 27 A, rotation frequency - 1480 rpm.Thank you.

New clarification added: Regarding the condition (Rated voltage of the power supply network – 6 kV (-20% - +15%)).None of the manufacturers of medium-voltage converters make such a supply voltage.By default, the supply voltage of the frequency converter is always 6kV  (-10...+10%).Please correct this requirement.Dear BidderThank you for your request. Please find the answer below.The required voltage is 6 kV (-20% - +15%) which means that the equipment with the voltage of 6 kV (-10...+10%) is fully compliant with the requirements.Thank you. 

New clarification added: Dear Team,'Thank you. Please provide us a direct response to enable us make decision. Are some countries or any country excluded from participating?Dear BidderThank you for your request.As stated in the legal documents shared in the previous answer, goods or parts of goods originating from the Russian Federation, Republic of Belarus, Islamic Republic of Iran are ineligible. Also companies that have owners or ultimate beneficiaries from the Russian Federation, Republic of Belarus, Islamic Republic of Iran are ineligible. Thank you.

New clarification added: Dear Team, kindly explain Bidder eligibility criteria I don't understand it? Are some countries excluded from participating?Dear BidderThank you for your request.Criteria 1.6 requires that “...bidders covered by (bidders who fall under) the Cabinet of Ministers of Ukraine Decree No. 187 (3 March 2022) and Decree No. 1178 (12 October 2022), which the equipment recipient is required to comply with, will be ineligible to be awarded a contract and otherwise excluded from procurement process…”.Please check the links to the above listed documents below:Cabinet of Ministers of Ukraine Decree No. 187 (3 March 2022) - https://zakon.rada.gov.ua/laws/show/187-2022-%D0%BF#TextCabinet of Ministers of Ukraine Decree No.1178 (12 October 2022) - https://zakon.rada.gov.ua/laws/show/1178-2022-%D0%BF#TextAlso “The bidder shall provide the scheme of its ownership, including disclosing the ultimate beneficiaries, to demonstrate compliance with this clause”.Please refer to the tender criteria listed in the “Criteria” Tab.Thank you.