IECEx Certificate of Conformity
International Electrotechnical Commission (IEC) Certification System for Explosive Atmospheres
Certificate Information
- Certificate No.: IECEX BVS 20.0058X
- Status: Current
- Issue No: 0
- Date of Issue: 2020-09-01
- Certificate History: Available via IECEx website
Applicant and Equipment Details
Applicant:
SIEMENS AG
Vogelweiherstraße 1-15
Nürnberg 90441
Germany
Equipment:
Three-phase induction motors type 1MB1*6*-1C*******-Z***
Optional Accessory:
Not specified in main text, refer to Annex.
Protection and Marking
Type of Protection:
Flameproof Enclosure "d", Increased Safety "e", Protection by Enclosure "t"
Marking:
- Ex db eb IIA/IIB T* Gb
- or Ex db eb IIA/IIB T* Gb Ex tb IIIA/IIIB/IIIC T***°C Db
- or Ex db eb IIA/IIB T* Gb Ex tc IIIA/IIIB/IIIC T***°C Dc
Associated Types:
- Type 1MB1*6*-1C*******-Z
- Type 1MB1*6*-1C*******-ZB32
- Type 1MB1*6*-1C*******-ZB30
Approval and Issuing Body
Approved for issue on behalf of the IECEx Certification Body:
Dr Franz Eickhoff
Lead Auditor and officially recognised expert
Certificate Issued By:
DEKRA Testing and Certification GmbH
Certification Body
Dinnendahlstrasse 9
44809 Bochum
Germany
Standards Compliance
The equipment was assessed and found to comply with the following IEC standards:
- IEC 60079-0:2017, Edition 7.0: Explosive atmospheres - Part 0: Equipment - General requirements
- IEC 60079-1:2014-06, Edition 7.0: Explosive atmospheres - Part 1: Equipment protection by flameproof enclosures "d"
- IEC 60079-31:2013, Edition 2: Explosive atmospheres - Part 31: Equipment dust ignition protection by enclosure "t"
- IEC 60079-7:2017, Edition 5.1: Explosive atmospheres - Part 7: Equipment protection by increased safety "e"
Note: This Certificate does not indicate compliance with safety and performance requirements other than those expressly included in the Standards listed above.
Test and Assessment Reports
- Test Report: DE/BVS/EXTR20.0054/00
- Quality Assessment Report: DE/BVS/QAR09.0009/11
Equipment Description and Specific Conditions of Use
Equipment Description:
The equipment consists of rotating electrical machines (three-phase induction motors) designed in type of protection Flameproof Enclosure "db". They are equipped with separately certified terminal boxes in type of protection Increased Safety "eb" for use in hazardous gas atmospheres. For hazardous dust atmospheres, the machines can be in type of protection Protection by Enclosure "tb" for zone 21 or "tc" for zone 22, with terminal boxes compliant to "tb" or "tc" levels.
The machine housing, end shield, and bearing caps are made of cast iron. The rotor is made of steel. Non-metallic gamma rings or radial shaft sealings are used. Cooling is achieved by an external fan made of steel, aluminum, brass, or plastic, driven by the machine itself.
Optional features include space heaters inside the stator housing (operation allowed only when the machine is not running) and certified encoders.
Specific Conditions of Use (SCU):
- Flameproof joint dimensions (lengths and gaps) may differ from standard table values; contact manufacturer for details.
- Screws must have a yield strength of 450 N/mm² or better.
- For non-self-cooled machines, forced cooling must be ensured, or the machine must be monitored by installed temperature sensors with a suitable trigger unit.
- The machine must be operated with a voltage source converter with pulse width modulation (PWM) regarding electrical parameters.
- Ensure no inadmissible overvoltage from converter supply occurs at motor terminals before setup.
- Maximum permissible peak voltages: 1500Vpk (standard), 2200Vpk (optional).
- Motor variants with temperatures above 70°C at cable glands and 80°C at wire branching are marked with an additional label.
Electrical Parameters
1.1 Electrical Parameters (Rotating Electrical Machine)
| Parameter | Value |
|---|---|
| Maximum rated voltage | up to 690 V |
| Maximum rated current | up to 57 A |
| Maximum rated power | up to 17 kW |
| Maximum rated torque | up to 119 Nm |
| Maximum rated frequency | up to 100 Hz |
| Maximum poles | up to 12 |
| Maximum rotational speed | up to 5400 min⁻¹ |
| Duty type | S1-S9 |
Note: For converter-fed machines, the fundamental wave voltage at motor terminals must not be decreased by 10%, considering minimum converter input voltage and supply line/filter voltage drop.
1.2 Electrical Parameters (Voltage-Source Converter)
| Parameter | Value |
|---|---|
| Used input voltage | Rated voltage of motor V |
| Minimum switching frequency | 2 kHz |
| Current limiting value | 1.5 x IN |
| Maximum overload time | 60 S |
| Output frequency | 5 up to 100 Hz |
Note: Overload time and operation below minimum output frequency are related to a 10-minute period.
1.3 Electrical Parameters (Monitoring Circuits)
| Circuit Type | Umax | Imax |
|---|---|---|
| PTC thermistors | 30 VDC | 0.5 A |
| Resistance thermometer Pt100 | 0.5 VDC | 1 mA |
| Resistance thermometer Pt1000 | 1 V | 0.5 mA |
Thermal Parameters
2.1 General
- Temperature class / Surface temperature: T6 to T3 / up to T200 °C. Specific values are indicated on the rating plate and data sheet.
2.2 Thermal Ratings (Flameproof Enclosure)
- Ambient temperature range: -20 °C ≤ Tamb ≤ 40 °C (standard); -40 °C ≤ Tamb ≤ 60 °C (optional)
Annex Reference
Further details regarding subject and type, description, parameters, and specific conditions of use are provided in the Annex document: BVS_20_0058X_Siemens_Annex.pdf
Disclaimer
This certificate and schedule may only be reproduced in full. It is not transferable and remains the property of the issuing body. Status and authenticity can be verified via www.iecex.com or the provided QR Code.
