<?xml version="1.0" encoding="UTF-8"?>
<!--REG30PARAB V1.0 (01-06-2026)-->
<xbrli:xbrl xmlns:in-capmkt="http://www.sebi.gov.in/xbrl/2026-04-30/in-capmkt" xmlns:in-capmkt-ent="http://www.sebi.gov.in/xbrl/Regulation_30_Para_B_Of_Part_A_Of_Schedule_III/2026-04-30/in-capmkt/in-capmkt-ent" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:in-capmkt-types="http://www.sebi.gov.in/xbrl/2026-04-30/in-capmkt-types" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:net="http://www.xbrl.org/2009/role/net" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xl="http://www.w3.org/1999/xlink"><link:schemaRef xlink:type="simple" xlink:href="in-capmkt-ent-2026-04-30.xsd"/><xbrli:context id="MainI"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/NSESymbol">KONSTELEC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-08-23</xbrli:instant></xbrli:period></xbrli:context><xbrli:context id="I_BaggingOrReceivingOfOrdersOrContracts"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/NSESymbol">KONSTELEC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-08-23</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-capmkt:SubTypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIIIAxis">in-capmkt:BaggingOrReceivingOfOrdersOrContractsMember</xbrldi:explicitMember></xbrli:scenario></xbrli:context><xbrli:context id="I_BaggingOrReceivingOfOrdersOrContractsMember"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/NSESymbol">KONSTELEC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-08-23</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-capmkt:AwardingOrBaggingOrReceivingOrAmendmentOrTerminationOfOrdersOrContractsAsPerSubPara4OfParaBAxis">in-capmkt:BaggingOrReceivingOfOrdersOrContractsMember</xbrldi:explicitMember></xbrli:scenario></xbrli:context><xbrli:unit id="INR"><xbrli:measure>iso4217:INR</xbrli:measure></xbrli:unit><in-capmkt:NSESymbol contextRef="MainI">KONSTELEC</in-capmkt:NSESymbol><in-capmkt:NameOfTheCompany contextRef="MainI">KONSTELEC ENGINEERS LIMITED</in-capmkt:NameOfTheCompany><in-capmkt:ScripCode contextRef="MainI">000000</in-capmkt:ScripCode><in-capmkt:MSEISymbol contextRef="MainI">NOTLISTED</in-capmkt:MSEISymbol><in-capmkt:ISIN contextRef="MainI">INE0QEI01011</in-capmkt:ISIN><in-capmkt:TypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIII contextRef="MainI">Awarding, Bagging/Receiving, Amendment or termination of orders/contracts (Sub-para 4-Para B)</in-capmkt:TypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIII><in-capmkt:SubTypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIII contextRef="I_BaggingOrReceivingOfOrdersOrContracts">Bagging/Receiving of orders/contracts</in-capmkt:SubTypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIII><in-capmkt:TypeOfAnnouncementAsPerRegulation30ParaBOfPartAOfScheduleIII contextRef="MainI">New</in-capmkt:TypeOfAnnouncementAsPerRegulation30ParaBOfPartAOfScheduleIII><in-capmkt:WhetherEventOrInformationDisclosedIsAnOutcomeOfTheBoardMeeting contextRef="MainI">false</in-capmkt:WhetherEventOrInformationDisclosedIsAnOutcomeOfTheBoardMeeting><in-capmkt:DateOfOccurrenceOfEventOrInformation contextRef="MainI">2026-08-22</in-capmkt:DateOfOccurrenceOfEventOrInformation><in-capmkt:TimeOfOccurrenceOfEventOrInformation contextRef="MainI">19:27:00</in-capmkt:TimeOfOccurrenceOfEventOrInformation><in-capmkt:DateOfReport contextRef="MainI">2026-08-23</in-capmkt:DateOfReport><in-capmkt:NameOfTheEntityAwardingTheOrdersOrContracts contextRef="I_BaggingOrReceivingOfOrdersOrContractsMember">CtrlS Data centers Limited</in-capmkt:NameOfTheEntityAwardingTheOrdersOrContracts><in-capmkt:WhetherTheOrdersOrContractsIsOrdinaryCourseOfBusiness contextRef="I_BaggingOrReceivingOfOrdersOrContractsMember">true</in-capmkt:WhetherTheOrdersOrContractsIsOrdinaryCourseOfBusiness><in-capmkt:WhetherOrdersOrContractsIsAwardedByDomesticOrInternationalEntity contextRef="I_BaggingOrReceivingOfOrdersOrContractsMember">Domestic</in-capmkt:WhetherOrdersOrContractsIsAwardedByDomesticOrInternationalEntity><in-capmkt:WhetherTheCounterpartyIsIndianListedEntity contextRef="I_BaggingOrReceivingOfOrdersOrContractsMember">false</in-capmkt:WhetherTheCounterpartyIsIndianListedEntity><in-capmkt:LEIOrCINOrRegistrationNumberOfTheCounterparty contextRef="I_BaggingOrReceivingOfOrdersOrContractsMember">U72200TG2007PLC056007</in-capmkt:LEIOrCINOrRegistrationNumberOfTheCounterparty><in-capmkt:WhetherTheCounterpartyBelongsToGroupCompaniesOfAnyIndianListedEntity contextRef="I_BaggingOrReceivingOfOrdersOrContractsMember">false</in-capmkt:WhetherTheCounterpartyBelongsToGroupCompaniesOfAnyIndianListedEntity><in-capmkt:NameOfTheCountryInWhichCounterpartyIsExists contextRef="I_BaggingOrReceivingOfOrdersOrContractsMember">INDIAN</in-capmkt:NameOfTheCountryInWhichCounterpartyIsExists><in-capmkt:DateOfBaggingOrReceivingOfOrdersOrContracts contextRef="I_BaggingOrReceivingOfOrdersOrContractsMember">2026-08-22</in-capmkt:DateOfBaggingOrReceivingOfOrdersOrContracts><in-capmkt:AmountOfTheOrdersOrContracts contextRef="I_BaggingOrReceivingOfOrdersOrContractsMember" unitRef="INR" decimals="0">488709372</in-capmkt:AmountOfTheOrdersOrContracts><in-capmkt:SignificantTermsAndConditionsOfOrdersOrContractsIsAwarded contextRef="I_BaggingOrReceivingOfOrdersOrContractsMember">Letter of Award for Supply, Loading, Unloading, Lifting, Shifting, Handling, Installation, Testing (L1, L2, L3, L4 &amp; L5), Commissioning and Handover of Electrical, HVAC, IBMS, BMS, Maxcool, CCTV, FPS &amp; PHE Works for 1 Floor including Interface Coordination at Hyderabad DCs (Chandan valley &amp; Pharmacity), as specified in the enclosed BOQ, technical specifications and annexures. The formal Purchase/Work Order will be issued with detailed BOQ and Terms &amp; Conditions.</in-capmkt:SignificantTermsAndConditionsOfOrdersOrContractsIsAwarded><in-capmkt:NatureOfOrdersOrContracts contextRef="I_BaggingOrReceivingOfOrdersOrContractsMember">Supply, Installation, Testing, Commissioning and Handover of Electrical, HVAC, IBMS, BMS, Maxcool, CCTV, FPS &amp; PHE Works for 1 Floor including Interface Coordination at Hyderabad DCs (Chandan valley &amp; Pharmacity).</in-capmkt:NatureOfOrdersOrContracts><in-capmkt:TimePeriodByWhichTheOrdersOrContractsIsToBeExecuted contextRef="I_BaggingOrReceivingOfOrdersOrContractsMember">The completion of the work shall be carried out within the timelines stipulated under the Letter of Award (LOA) and in accordance with the terms and conditions specified therein. The stipulated time for completion shall be treated as material to the contract, and the Contractor shall ensure timely completion of the work in accordance with the requirements of the LOA</in-capmkt:TimePeriodByWhichTheOrdersOrContractsIsToBeExecuted><in-capmkt:BroadConsiderationForTheOrdersOrContracts contextRef="I_BaggingOrReceivingOfOrdersOrContractsMember">488709372 excluding GST</in-capmkt:BroadConsiderationForTheOrdersOrContracts><in-capmkt:WhetherThePromoterOrPromoterGroupOrGroupCompaniesHaveAnyInterestInThatEntityToWhomTheOrdersOrContractsIsAwarded contextRef="I_BaggingOrReceivingOfOrdersOrContractsMember">false</in-capmkt:WhetherThePromoterOrPromoterGroupOrGroupCompaniesHaveAnyInterestInThatEntityToWhomTheOrdersOrContractsIsAwarded><in-capmkt:WhetherTheOrderOrContractWouldFallWithinRelatedPartyTransactions contextRef="I_BaggingOrReceivingOfOrdersOrContractsMember">false</in-capmkt:WhetherTheOrderOrContractWouldFallWithinRelatedPartyTransactions></xbrli:xbrl>
