R46/2012-A-CN2-26.03
OIML CERTIFICATE
ISSUED UNDER SCHEME A
OIML Issuing Authority Name: National Institute of Metrology, China Address: No.18, Bei San Huan Dong Lu, Chaoyang Dist., Beijing, P. R. China Person responsible: Mr. Li Wentao
Applicant Name: ELECTRICAL CIRCUIT BREAKERS FACTORY FOR INDUSTRY-ECB Address: Second Industrial Area, Exit 15, Riyadh Region, Saudi Arabia 14332
Manufacturer Name: ELECTRICAL CIRCUIT BREAKERS FACTORY FOR INDUSTRY-ECB Address: Second Industrial Area, Exit 15, Riyadh Region, Saudi Arabia 14332
Identification of the 3 Phase 4 Wire Electronic Meter certified type EC3005AF, 3x133/230V, 3x230/400V, 0.5-10(100)A, 60Hz (Further characteristics on page 2)
This OIML Certificate attests the conformity of the above identified type (represented by the sample(s) identified in the OIML type evaluation report) with the requirements of the following Recommendation of the International Organization of Legal Metrology (OIML):
OIML R46 - Edition 2012
For accuracy class: Class B (Class 1)
This OIML Certificate relates only to metrological and technical characteristics of the type of measuring instrument covered by the relevant OIML Recommendation identified above.
This OIML Certificate does not bestow any form of legal international approval.
Important note: Apart from the mention of the Certificate's reference number and the name of the OIML Member State in which the Certificate is issued, partial quotation of the Certificate and of the associated OIML type evaluation report(s) is not permitted, although either may be reproduced in full.
OIML Issuing Authority:
National Institute of Metrology, China
Date:
09 February 2026
No.18, Bei San Huan Dong Lu,
Chaoyang Dist, Beijing,
100029, P.R.China
+861064525646
OIML Issuing Authority
中国OIML证书发证机构
Li Wentao
Director
National Institute of Metrology, China
The conformity was established by the results of tests and examinations provided in the associated OIML type evaluation report:
No. TER-R46/2012-CN2-26.03 dated 09 February 2026 that includes 19 pages and the associated OIML test report:
No. ZQS-NJDLO-2025120001 dated 08 January 2026 that includes 67 pages
OIML Certificate History
| Revision No. | Date | Description of the modification |
| 0 | 09 February 2026 | Initial issue |
Characteristics of the Instrument
| Meter type(electromechanical/static): | Static |
| Accuracy class: | Class B(Class 1) |
| Nominal voltage, $U_{\mathrm{nom}}$: | 133V,230V |
| Nominal frequency,$f_{\mathrm{nom}}$: | 60Hz |
| Maximum current,$I_{\mathrm{max}}$: | 100A |
| Transitional current,$I_{\mathrm{tr}}$: | 1A |
| Minimum current,$I_{\mathrm{min}}$: | 0.5A |
| Starting current,$I_{\mathrm{st}}$: | 0.04A |
| Connection mode(phases,wires,elements): | Direct-connected,Three phases four wires,three elements |
| Direction of energy flow/registers: | Two-register,bi-directional |
| Register multiplier: | 1 |
| Meter constant: | 1000imp/kWh |
| Specified clock frequencies: | Metering MCU:32.768kHz,Main MCU:32.768kHz |
| Indoor/Outdoor: | Indoor |
| IP Rating: | IP54 |
| Terminal arrangement(e.g:BS,DIN): | BS |
| Insulation protection class: | II |
| Lower specified temperature: | -40℃ |
| Upper specified temperature: | +75℃ |
| Humidity class: | H2 |
| Tilt/Mounting position: | Any position is allowed |
| Hardware version(s): | DTSD-AFD5-VF1.2_2024.09.14DTSD-AFZ5-VF1.2_2024.09.14 |
| Software version(s): | Metering MCU:200.32025-02-28,Checksum:1328 |
Remarks:
The upper temperature of the meter is specified by the customer.
Communication interfaces: 1 optical port, 2 RS485 ports, 1NB-IoT Module.