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Turnkey Regulatory & Engineering Consultancy
A-to-Z Energy Meter Manufacturing & Certification Consultancy
End-to-end technical, engineering, and regulatory consultancy for new and established energy meter manufacturers. We cover every phase: from architectural schematic design, metrology calibration, and IS 15959 DLMS/COSEM firmware stacks to in-house BIS Scheme of Testing and Inspection (STI) lab setup, pre-compliance validation, and complete type-test clearance at NABL-accredited test laboratories (CPRI / ERDA) for BIS ISI Mark grant under IS 13779 and IS 16444.
Standards & Regulatory Frameworks
IS 13779 (Class 1 & 2)AC static watt-hour meters for residential and commercial sub-metering, limits of error, meter constant verification, and standard ISI Scheme I compliance.
IS 16444 (Part 1 & Part 2)Single-phase and three-phase direct connected and CT/PT operated smart meters, including internal load switch capability, tamper event logging, and two-way AMI communications.
IS 15959 (Part 1, 2 & 3) DLMS/COSEMIndian Companion Standard OBIS code mapping, High-Level Security (HLS), optical HDLC communication, and DLMS CTT conformance verification.
BIS ISI & NABL Accreditation RouteCoordination with NABL test houses (CPRI / ERDA), factory audit preparation, STI equipment readiness, and complete support through ISI license grant.
Structured Lifecycle
Turnkey A-to-Z Execution Roadmap
Milestone execution from architecture schematics to final BIS ISI license grant.
PHASE 01
Hardware R&D & Schematic Design
- Microcontroller (MCU) and precision Metering AFE IC selection
- Power supply design with MOV surge withstand and optical isolation
- Current sensor selection (Manganin Shunt, CT, or Rogowski)
- Multi-layer PCB layout optimized for EMC/EMI immunity
PHASE 02
Metrology Firmware & Protocol Porting
- Dynamic calibration algorithms for Class 1.0, 0.5S, and 0.2S
- IS 15959 companion standard implementation with OBIS codes
- Optical port, RS485 Modbus, and Cellular 4G / NB-IoT stacks
- Tamper algorithms: magnetic immunity, neutral disturbance, ND
PHASE 03
In-House Testing Setup & STI Compliance
- Equipment selection for mandatory BIS STI compliance
- Setup of reference test benches, starting and no-load stations
- Preparation of test formats, factory quality manuals, and SOPs
- Routine production line test bench calibration and verification
PHASE 04
Pre-Compliance & CTT Conformance
- Metrological limit-of-error pre-testing at unity and non-unity PF
- Repeatable error, starting current, and temperature drift verification
- Official DLMS CTT (Conformance Test Tool) automated dry runs
- Pre-audit inspection replicating BIS factory audit protocols
PHASE 05
NABL Type-Testing & BIS ISI Licensing
- Sample preparation and documentation for CPRI / ERDA submission
- Testing coordination for 6kV impulse, AC high voltage, and climatic
- Load switch endurance and short-circuit withstand validation
- Factory audit support during BIS inspection through ISI grant
Key Deliverables & Specifications
Zero-defect strategy for BIS Scheme I ISI mark certification
Full DLMS CTT tool pre-validation before submission to NABL labs
Bill of Materials (BOM) cost optimization with reliable industrial components
Calibration error curve tuning across dynamic current ranges (Ib to Imax)
Tamper detection compliance: 0.5T permanent magnet and ND immunity
IS 15959-1 and IS 15959-2 push/pull data transaction profiling
Complete documentation pack: BOM, schematics, and factory manuals
Turnkey guidance through factory inspection and final license grant
Turnkey Embedded Engineering