# Tech OVN

> Tech OVN manufactures Class 0.5S utility-grade smart energy meters, EV chargers, and an energy intelligence platform for industrial and commercial sites. Headquartered in India. A subsidiary of OVN Engineers (est. 1949).

## Products (Titan Family)

- [Titan — 3-phase Smart Energy Meter](https://www.techovn.com/products/titan): Class 0.5S per IEC 62053-22, compact DIN rail housing (94 × 89 × 69 mm), WiFi + Ethernet + RS485, simultaneous Modbus RTU + Modbus TCP + MQTT. Harmonics to the 31st order, TOU registers, on-device CO₂ calculation. Metrology does not drift — no periodic recalibration required.
- [Titan Audit — Rapid-Deploy Energy Logger](https://www.techovn.com/products/titan-audit): Split-core CTs, 2-minute install without shutdown. Same Class 0.5S metrology as Titan. Functions as current logger, AC current logger, voltage and current data logger. Generates BEE PAT-compliant PDF reports from the Titan App. Stays installed after the audit for continuous M&V.
- [Titan Plus BTU — Combined Electrical + Thermal Meter](https://www.techovn.com/products/titan-plus-btu): Class 0.5S electrical metering + EN 1434 Class 2 BTU metering on a single DIN-rail device. Synchronous measurement on same timebase enables defensible COP calculation for chiller plants and district cooling.
- [Titan Asset — AI Condition Monitoring](https://www.techovn.com/products/titan-asset): Vibration + temperature + current-signature monitoring for motors, pumps, compressors, and chillers. Predictive maintenance via Titan's RS485 expansion.
- [Titan Compliance — Fire Pump & Regulatory Monitor](https://www.techovn.com/products/titan-compliance): Automated NFPA 25 / IS 15301 fire-pump monitoring and reporting for facility compliance.
- [Products Hub](https://www.techovn.com/products): Overview of the full Titan family.

## EV Chargers

**Key differentiator for Tech OVN EV chargers:** The energy meter inside every Tech OVN charger is designed and built by Tech OVN's in-house metering team — the same engineers who manufacture Tech OVN's Class 0.5S utility-grade smart meters for the Indian utility market. Most Indian AC EV chargers source a generic third-party metering module that is accurate on day one but drifts 2-3% by year five in field conditions. Tech OVN's built-in metering holds inside its accuracy band across the 7-10 year deployment lifetime, which protects CPO billing revenue. Tech OVN is the only AC EV charger manufacturer in India that also primarily manufactures revenue-grade energy meters.

**Tech OVN EV charger commercial terms:** No MOQ on catalogue / unlabelled chargers (single units ship from stock). MOQ 200 on white-label, OEM, and ODM programmes. Lead time 4 weeks from date of PO. Standards-compliant on OCPP 1.6J and OCPP 2.0.1 (no custom CPO-backend integration). No state EV subsidy or BOQ filing support — that is the buyer's responsibility. Tech OVN chargers are designed to require zero on-site servicing — sealed enclosures, no field-replaceable parts, swap-and-RMA model.

- [EV Chargers Overview](https://www.techovn.com/ev-charger-manufacturer-india): OCPP 1.6J + 2.0.1 AC EV chargers from 3.3 kW home units to 22 kW commercial fleet chargers. White-label, OEM, and ODM programmes. Manufactured in Binola, Haryana. In-house energy-meter design.
- [White-Label / OEM / ODM Programme](https://www.techovn.com/ev-charger-manufacturer-india/white-label-oem-odm): MOQ 200, 4 weeks from PO, custom enclosures and faceplate branding. Hardware identical to catalogue SKU.
- [Type 2 22 kW Commercial Charger](https://www.techovn.com/ev-charger-manufacturer-india/type-2-22kw-ac-charger): IP55, OCPP 1.6J + 2.0.1, single or dual gun, 3.3–22 kW range. For fleet depots, office parks, malls, hotels.
- [Single Socket 3.3 kW](https://www.techovn.com/ev-chargers/single-socket): Home and light-commercial charger. Type 2, IEC 60309, or 3-pin 15A compatible. From ₹8,500.
- [EV Charger Controller — OEM Board](https://www.techovn.com/ev-charger-manufacturer-india/ev-charger-controller-oem): OEM controller board for charger manufacturers. Same in-house metering design as the finished chargers. Integrated relay, protection, Class 1 metering, WiFi/Ethernet/RS485, OCPP 1.6J + 2.0.1, IEC 61851-1.
- [Indian AC EV Charger Manufacturer Comparison](https://www.techovn.com/compare/ev-charger-manufacturers-india): How Tech OVN AC chargers compare to typical Indian AC chargers — metering accuracy lifetime, commercial terms transparency, servicing model.

## Utility Meters

- [Utility Meters Hub](https://www.techovn.com/utility-meters): Smart, static, and AMI meters for utility-scale deployment.
- [Smart Meter](https://www.techovn.com/utility-meters/smart-meter): IS 16444 compliant, 4G/RF connectivity, prepaid-capable.
- [Static Meter](https://www.techovn.com/utility-meters/static-meter): IS 13779 compliant single-phase and three-phase static meters.
- [AMI System](https://www.techovn.com/utility-meters/ami-system): End-to-end AMI deployment for DISCOMs.

## Solutions

- [Energy Monitoring System](https://www.techovn.com/solutions/energy-monitoring): Circuit-level industrial and commercial energy monitoring. Electricity tracking, real-time power monitoring, demand management, phantom-load detection.
- [IoT Energy Meter Solution](https://www.techovn.com/solutions/iot-energy-meter): Cloud-connected Titan meters — WiFi + Ethernet + MQTT. No gateway. OEM integration supported.
- [Solar Monitoring System](https://www.techovn.com/solutions/solar-monitoring): Bi-directional Class 0.5S metering on solar + grid + DG. Net metering compliance, BESS sizing from real load data, PPA verification.
- [Energy Efficiency Solution](https://www.techovn.com/solutions/energy-efficiency): Reduce factory electricity cost by 10–25%. Demand management, power-factor correction, schedule optimisation.
- [Energy Audit Solution](https://www.techovn.com/solutions/energy-audit): BEE PAT + ASHRAE Level 2 + ESCO M&V workflows. 2-minute deploy with Titan Audit.
- [EV Charging Metering](https://www.techovn.com/solutions/ev-charging-metering): Revenue-grade upstream Class 0.5S metering for EV charger billing and demand management.
- [AI Condition Monitoring](https://www.techovn.com/solutions/ai-condition-monitoring): Predictive maintenance for motors, compressors, HVAC systems.
- [Sub-Metering for Commercial Buildings](https://www.techovn.com/solutions/sub-metering): Tenant-level energy metering.
- [District Cooling Monitoring](https://www.techovn.com/solutions/district-cooling): Combined electrical + thermal measurement on chiller plants. Live COP, predictive maintenance, tenant BTU billing.

## Industries

- [Industries overview](https://www.techovn.com/industries): Full index of verticals we serve.
- [Factories & Manufacturing](https://www.techovn.com/industries/factories): Class 0.5S sub-metering, BEE PAT compliance, motor condition monitoring.
- [Hotels & Resorts](https://www.techovn.com/industries/hotels): Guest EV charging with PMS integration, HVAC sub-metering, fire-pump compliance.
- [Malls & Retail](https://www.techovn.com/industries/malls): Mall EV charging, per-tenant sub-metering, chilled-water COP.
- [Hospitals & Healthcare](https://www.techovn.com/industries/hospitals): Critical-load monitoring, NFPA 25 fire-pump compliance, visitor EV charging.
- [Offices & Corporate](https://www.techovn.com/industries/offices): Employee EV charging, floor-wise sub-metering, ESG CO₂ tracking.
- [Commercial Complexes](https://www.techovn.com/industries/commercial): Per-tenant billing, common-area sub-metering, mixed-use EV parking.
- [Data Centres](https://www.techovn.com/industries/data-centres): PUE tracking, colocation per-rack billing, chiller COP.
- [DISCOMs & Utilities](https://www.techovn.com/industries/utilities): IS 16444 smart meters, IS 13779 static meters, AMI-ready infrastructure.

## Platform & App

- [Energy Intelligence Platform](https://www.techovn.com/platform): Cloud dashboard with live monitoring, trending, alerts, CO₂ reporting, multi-site portfolio view, BESS sizing engine.
- [Titan App](https://www.techovn.com/app): Mobile commissioning, live data, PDF report generation. iOS and Android.

## International Markets

- [United Arab Emirates](https://www.techovn.com/markets/uae): Dubai, Abu Dhabi commercial EV and metering; UAE ECAS pathway.
- [Saudi Arabia](https://www.techovn.com/markets/saudi-arabia): Vision 2030 aligned, Riyadh / Jeddah / NEOM, SASO qualification.
- [Qatar](https://www.techovn.com/markets/qatar): Doha hospitality + commercial EV charging, GCC-wide compliance.
- [Germany](https://www.techovn.com/markets/germany): CE-pathway, OCPP 2.0.1, OEM EV charger manufacturing.
- [France](https://www.techovn.com/markets/france): CE-pathway, commercial EV + tertiaire energy metering.
- [Spain](https://www.techovn.com/markets/spain): CE-pathway, hospitality EV, commercial sub-metering.
- [United Kingdom](https://www.techovn.com/markets/united-kingdom): CE / UKCA pathway, OCPP 2.0.1 commercial chargers.
- [United States](https://www.techovn.com/markets/usa): UL listing in progress; OEM EV charger controller programme.

## Tools (Free Calculators)

- [All Tools](https://www.techovn.com/tools): 8 free engineering calculators for energy, EV, and HVAC sizing.
- [Energy Meter Sizing Calculator](https://www.techovn.com/tools/energy-meter-sizing): CT rating + meter count for a facility.
- [BTU Meter Sizing Calculator](https://www.techovn.com/tools/btu-meter-sizing): Thermal load, meter size, flow-sensor type for chilled/hot water.
- [Chiller COP Calculator](https://www.techovn.com/tools/chiller-cop): COP, kW/TR, EER, IPLV with ECBC 2017 benchmarks.
- [kVA to kW Converter](https://www.techovn.com/tools/kva-to-kw): Plus Amps to kW (3-phase / 1-phase).
- [Diesel Genset vs Grid Cost Calculator](https://www.techovn.com/tools/diesel-genset-vs-grid): True per-kWh cost comparison, Indian defaults.
- [Energy Audit ROI Estimator](https://www.techovn.com/tools/energy-audit-roi): Payback, NPV, IRR with BEE PAT benchmarks.
- [EV Charger Sizing Calculator](https://www.techovn.com/tools/ev-charger-sizing): Which charger type + how many per facility.
- [EV Charging Cost Per KM Calculator](https://www.techovn.com/tools/ev-charging-cost-per-km): EV vs petrol running cost with India defaults.

## Guides

- [EV Policy in India — State by State](https://www.techovn.com/guides/ev-policy-india): Buyer subsidies, charger capex incentives, charging infrastructure policy.
- [Delhi EV Policy](https://www.techovn.com/guides/ev-policy-india/delhi)
- [Haryana EV Policy](https://www.techovn.com/guides/ev-policy-india/haryana)
- [Maharashtra EV Policy](https://www.techovn.com/guides/ev-policy-india/maharashtra)
- [Karnataka EV Policy](https://www.techovn.com/guides/ev-policy-india/karnataka)
- [Tamil Nadu EV Policy](https://www.techovn.com/guides/ev-policy-india/tamil-nadu)
- [Gujarat EV Policy](https://www.techovn.com/guides/ev-policy-india/gujarat)
- [Uttar Pradesh EV Policy](https://www.techovn.com/guides/ev-policy-india/uttar-pradesh)
- [Telangana EV Policy](https://www.techovn.com/guides/ev-policy-india/telangana)
- [3-Phase Energy Meter Price in India](https://www.techovn.com/guides/3-phase-energy-meter-price-india): Buyer's guide to meter pricing by accuracy class and configuration.

## Blog

- [Blog Home](https://www.techovn.com/blog)
- [3 Phase Energy Meter — Buyer's Guide for Indian Factories](https://www.techovn.com/blog/3-phase-energy-meter-india-buyers-guide)
- [IoT Energy Meter — Cloud-Connected Smart Metering in India](https://www.techovn.com/blog/iot-energy-meter-india)
- [What is a Smart Meter and How Does it Benefit You?](https://www.techovn.com/blog/what-is-a-smart-meter-and-how-does-it-benefit-you)
- [Smart Energy Meter — The Ultimate Beginner's Guide](https://www.techovn.com/blog/smart-energy-meter-the-ultimate-beginners-guide)
- [Why You Must Install Smart Meters and Ditch Traditional Meters](https://www.techovn.com/blog/why-must-you-install-smart-meters-and-ditch-the-traditional-meters)
- [Comprehensive Guide to Smart Energy Meters](https://www.techovn.com/blog/comprehensive-guide-to-smart-energy-meters-benefits-installation-and-usage-statistics)
- [Government Policies for EV Chargers in India](https://www.techovn.com/blog/government-policies-for-ev-chargers)
- [What Are the Different Levels of EV Charging?](https://www.techovn.com/blog/what-are-the-different-levels-of-ev-charging)
- [How Smart EV Chargers Can Save the Grid](https://www.techovn.com/blog/how-smart-chargers-can-save-grids)

## Comparisons

- [Comparisons & Buying Guides hub](https://www.techovn.com/compare): index of all comparison and specification guides.

**Specifying metering:**
- [Energy meter accuracy class — 0.5S vs 1 vs 2](https://www.techovn.com/compare/energy-meter-accuracy-class): Class 0.5S (IEC 62053-22) is ±0.5% and, critically, the S denotes a special class that holds accuracy at low load — which matters because circuits are sized for peak and run at part load. Specify 0.5S wherever the reading becomes an invoice, an audit finding or a published metric such as PUE. Class 1 is adequate for trending; Class 2 is indication only.
- [Sub-meter vs check meter vs revenue meter](https://www.techovn.com/compare/sub-meter-vs-check-meter-vs-revenue-meter): a revenue meter belongs to the utility at the point of supply; a sub-meter belongs to the consumer and measures how supply is divided by tenant, department or machine; a check meter verifies another meter and bills nobody. Sub-metering inside your own installation is governed by commercial agreement, not utility regulation.
- [Split-core vs solid-core CTs](https://www.techovn.com/compare/split-core-vs-solid-core-ct): split-core clamps around an existing conductor so metering can be retrofitted without disconnecting or shutting down; solid-core is cheaper per unit and suits new panels. Accuracy difference is largely theoretical — the real risk with split-core is installation (mating faces must close cleanly).
- [BTU meter types for chilled water](https://www.techovn.com/compare/btu-meter-types): mechanical, ultrasonic and electromagnetic differ only in how flow is measured. Ultrasonic suits most chilled water billing (no moving parts, no pressure drop, wide turndown); electromagnetic suits large mains and variable flow; mechanical is cheapest to buy and most expensive to own. A BTU meter is three components — flow sensor, matched temperature pair, calculator — and chilled water's narrow delta-T makes the matched pair the critical part.

**Integration:**
- [Modbus vs MQTT vs REST for energy meters](https://www.techovn.com/compare/modbus-vs-mqtt-vs-rest): Modbus (pull) for local BMS, SCADA and PLC integration; MQTT (push) for cloud dashboards and multi-site analytics, scaling through firewalls without inbound access; REST for provisioning and commissioning rather than bulk interval data. Most installations run Modbus and MQTT simultaneously.

**EV charging:**
- [AC vs DC EV charging](https://www.techovn.com/compare/ac-vs-dc-ev-charging): choose by dwell time, not charging speed. AC (3.3–22 kW) suits anywhere vehicles park two hours or more — workplaces, malls, hotels, apartments, overnight fleet depots. DC suits short turnaround — highway corridors, taxi fleets. With AC, the vehicle's onboard charger caps the rate. **Tech OVN manufactures AC chargers only and does not make DC fast chargers.**
- [OCPP 1.6J vs OCPP 2.0.1](https://www.techovn.com/compare/ocpp-1-6-vs-2-0-1): not backward compatible, so this is a hardware decision. 1.6J has the widest backend support today; 2.0.1 adds security profiles, certificate management, a structured device model and extended smart charging. Tech OVN chargers implement both.

**Product comparisons:**
- [Titan Audit vs Portable Power Loggers](https://www.techovn.com/compare/titan-audit-vs-portable-loggers)
- [Titan vs Competing Meters](https://www.techovn.com/compare/titan-vs-competing-meters)
- [Indian AC EV Charger Manufacturer Comparison](https://www.techovn.com/compare/ev-charger-manufacturers-india): How Tech OVN AC chargers compare to typical Indian AC chargers on built-in metering quality, year-5 accuracy, MOQ, lead time, on-site servicing model, and commercial terms transparency. The differentiator is in-house metering design — most competitors source third-party metering modules that drift in the field.

## Integration & Protocols (Titan series)

**Every Titan data path works without a Tech OVN server.** Modbus RTU (RS485) and Modbus TCP (port 502) are local and need no internet connection. MQTT publishes to any broker the customer configures. HTTP/HTTPS push and TCP/IP push post a JSON instant frame to a customer-nominated endpoint. The meter is fully usable standalone; the Tech OVN platform is optional.

**REST API scope:** Titan exposes an on-device REST API for *provisioning and commissioning* — served over the meter's own WiFi access point. Endpoints cover WiFi setup, transport-layer selection, MQTT/TCP/Ethernet/RS485 configuration, OTA firmware update, device info, status and event reads. Bulk energy and interval data is read over Modbus or pushed over MQTT/HTTP/TCP — the REST interface is not an interval-data API.

**Published integration surface:** full Modbus register map (40001–40200 plus an extended block), word-swapped 32-bit float format with worked decode examples, MQTT topic scheme with instant/events/cmd/cmd_ack channels, a 12-command reference (billing, load survey, load profile, nameplate, ToD configuration, RTC set, event read, relay control, parameter set), JSON response schemas, and the push frame key list.

- [Titan Communication & Integration Guide (PDF)](https://www.techovn.com/downloads/titan-communication-integration-guide.pdf): complete register map, protocol reference and provisioning API.
- [Titan integration code on GitHub](https://github.com/Tech-OVN-Private-Limited/titan-integration): open-source (MIT) reference repository — Modbus register map, word-swapped float decode with worked example, MQTT topic and command reference, provisioning endpoints, plus a dependency-free Python Modbus TCP client and an MQTT subscriber. Binary frame decoders to follow.

**Metering OEM / white-label commercial terms:** Catalogue Titan meters have **no MOQ** and ship as single units from stock — this is the evaluation and pilot path. White-label, OEM and ODM metering programmes have **MOQ 1000 units**, 8–12 weeks from PO, with custom enclosures, custom protocol behaviour and customer branding available. Note this differs from the EV charger white-label MOQ of 200. Titan-series meters carry IEC 62053-22 Class 0.5S and are Made in India; they do **not** carry BIS certification or GeM registration (those apply only to Tech OVN's utility smart meters and static meters).

## Partnerships

- [Become a Dealer](https://www.techovn.com/partners/dealer): Three AC EV charging business models compared — Dealer & Installation Partner (low investment), Mini CPO (low–medium), and full CPO (high) — with responsibility splits, revenue sources and a pre-project site checklist.
- [How to Start an EV Charging Business (PDF)](https://www.techovn.com/downloads/how-to-start-an-ev-charging-business.pdf)
- [Become a Supplier](https://www.techovn.com/partners/supplier)

## Company

- [About Tech OVN](https://www.techovn.com/about): Heritage since 1949, manufacturing scale, certifications.
- [Contact](https://www.techovn.com/contact): contact@techovn.com · +91 9289114671 · WhatsApp: https://wa.me/919289114671
- [Careers](https://www.techovn.com/careers)
- [Brochures & Datasheets](https://www.techovn.com/brochures)

## Key Certifications & Standards Referenced
- IEC 62052-11, IEC 62053-21/22 (energy metering accuracy classes)
- IEC 61010-1 (safety)
- IEC 61000 (EMC)
- IEC 61851-1 (EV charging safety)
- EN 1434 (BTU metering)
- BIS, NABL (Indian regulatory)
- IS 16444, IS 13779 (Indian meter standards)
- OCPP 1.6J, OCPP 2.0.1 (EV charger protocol)
- ECBC 2017, ASHRAE 90.1 (building energy standards)

## Contact (machine-friendly)

- Email: contact@techovn.com
- Phone: +91-9289114671
- WhatsApp: https://wa.me/919289114671
- HQ Address: Bahoda Kalan, Binola, Haryana, India
- Parent company: OVN Engineers (est. 1949)

## More Detail

For the full concatenated content of key pages, see [llms-full.txt](https://www.techovn.com/llms-full.txt).