stelmec®
GR
boundaries
ID & PO
W
ER I T
S MA R T
beyond
Stelmec offers STEM01 & STEM03 - RF single &
three phase meters are designed to measure
accurate electric energy consumption for
residential and commercial applications. This is an
innovative, cost effective, reliable solution for
STAR
AMR SOLUTION WITH
RF ENERGY METER
billing and profile data collection from energy
meters, hybrid smart meters and AMR
implementation for near-real time monitoring.
Applications
Residential
Commercial/ Industrial
Salient Features
Metering:
Complies to Indian and International standards
Auto scroll, Push button and High resolution modes
Programmable TOD and load profile for 15/30/60
minute interval
Accurate measurement in ‘single wire mode’
Tamper detection and event logging
Communication Features:
Supports various ISM bands, modulation techniques
High level data security
Self-forming, self-healing and self-optimizing
wireless mesh network
Multi-hopping
Inter-operable solution (DLMS option available)
Long distance communication range and high data
through-put
Solution:
Metering data collection by scheduling
Sub1GHz with Mesh Networking for DCU integration
Back-haul network (GPRS/Optical fiber)
STAR
AMR SOLUTION WITH RF ENERGY METER
Cust. App.
Components of Solution
Smart/ RF Meter
Device Data
Management
Device Data
Acquisition system
DCU (Data Concentrator Unit)
HES (Head End System)
Protocol Layer
(Can be implemented on request)
Contiki OS
CoAP/REST/web Sockets
Transport Layer
TCP/UDP/DTLS/TLS
MESH Layer
6LoWPAN/IPv6/RPL
MAC
Custom
Application Layer
IEEE 802.15.4e (Option TSCH)
IETF6TiSCH
IEEE 802.15.4g PHY + (AES 128 hardware encryptions)
Technical Specifications
Meter:
Connection type and wiring configuration
Single phase two wire/ Three phase four wire; Direct connected/ C.T. operated
Temperature range
-10°C to 60°C
Humidity
< 95% non condensing
Accuracy class
Class 1.0
Compliance Standards
IS13779:1999, CBIP 325, IS16444:2014
Reference voltage range
230 – 240V (Ph – N)/ 415V (Ph – Ph)
Current rating
5-30A, 10-40A, 10-60A
Power factor range
Zero Lag – Unity – Zero Lead
Frequency
50 Hz ±5%
Starting current
0.2% lb at Vref and Unity P.F.
Event Logging/ Immune to:
Single wire mode
Current reversal
Earth load (Full/Partial)
Magnetic influence
Cover open
Spark discharge (35kV)
Neutral disturbance (resistive, capacitive, diode)
Enclosure
IP51/ IP54, Polycarbonate (Glass reinforced)
Radio frequency communication:
IEEE standard
IEEE 802.15.4g/e
Frequency band (ISM)
865-867MHz (Also available in other Sub1 GHz frequencies)
Modulation technique
FSK + OFDM
Data security
Embedded security engine
Wireless mesh protocol
6LoWPAN/ IPV6/ RPL
Hopping
up to 7 hops
Communication Range
300+ meters LOS
100+ meters with concrete blockage
300 kbps nominal
Data Rate
There is a continuous effort at Stelmec to keep abreast of latest technology inline with customers’ requirement.
All these activities are followed as per ISO 9001 : 2008.
stelmec
beyond
boundaries
®
SBU – III (Power IT Solution Division)
CORPORATE
Plot No. 14/15, Off National Highway No. 8,
Village - Sativali, Vasai (E),
Dist. Palghar - 401 208
Tel: +91 250 – 6454150/6452377
Stelmec Limited 'Sea Queen', 43-A, H.K. Bhabha Road,
Bandstand, Bandra (W), Mumbai - 400 050.
E-mail: corporate@stelmec.com
Tel: +91 22 2643 6127 / 28 / 29 | Fax: +91 22 2643 6139
website: www.stelmec.com