Sr. Customer Application Support
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Job Summary
Role Overview:
We are seeking a highly skilled Application Engineer with strong expertise in energy metering technologies including developing metrology (single & three phase) DLMS/COSEM protocol and energy meter hardware architecture.
Education
Bachelors degree in electrical engineering Electronics Instrumentation or related fields. Masters degree is a plus.
Key Skill set:
Strong Understanding of Electrical Measurement Principles:
Fundamentals of AC power measurement (singlephase & threephase)
RMS calculations for voltage current power & energy
Concepts of active reactive apparent power
Power factor measurement (displacement & distortion PF)
CT/PT interfacing burden selection linearity and phaseangle correction
Antitamper metering concepts (neutral disturbance magnetic tamper bypass detection)
Expertise in Metrology Algorithms
Implementation of sampling digital filtering and signal conditioning
Frequency tracking & phaselocked loop (PLL) algorithms
Compensation techniques for:
Gain & offset errors
Phase angle errors
Temperature drift
Energy calculation algorithms (block processing timedivision sampling etc.)
Lowsignal detection creep handling and startup threshold logic
ADC & Sensor Interface Knowledge
Experience with ΣΔ (SigmaDelta) ADCs multichannel highresolution converters
Understanding sampling rate aliasing ENOB quantization noise
Design and calibration of current sensors:
Shunts
CTs
Rogowski coils
Hall sensors
Noise isolation grounding and analog frontend design
DLMS/COSEM Knowledge (for Smart Meters)
While metrology is separate from DLMS a metrology engineer should understand how measured parameters map to communication standards:
OBIS code mapping for power & energy registers
COSEM interface objects related to billing load profiles events
Security suites (Suite 0 / Suite 1 / Suite 2)
Interoperability testing with HES/MDM
DLMS data structures for profile capture & metering blocks
Calibration & Accuracy Testing
Handson experience with meter test benches (ZERA Radian Secure L&T)
Multipoint calibration techniques:
Voltage current phase angle power factor
Accuracy standards:
IS 16444 (Smart Meters)
IS 15959 (DLMS)
IEC/22/23
Endurance creep tamper harmonic and influence quantity testing
Required Experience:
Senior IC
Key Skills
- Children Activity
- Access Control
- Human Resources Administration
- Government
- Actuary
- Hydraulics
About Company
NXP is a global semiconductor company creating solutions that enable secure connections for a smarter world.
