G/TBT/N/TZA/124  
 
14 December 2017  
(17-6942) Page: 1/2 
Committee on Technical Barriers to Trade  Original: English  
 
  
NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6  
 
1. Notifying Member: TANZANIA   
If applicable, name of local government involved (Article 3.2  and 7.2):   
2. Agency responsible:  
Tanzania Bureau of Standards  
MOROGORO/Sam Nujoma Road  
Ubungo P O BOX 9524  
Tel: +255 222450206   
Email: info@tbs.go.tz , www.tbs.go.tz  
Name and address (including telephone and fax numbers, email and website 
addresses, if available) of agency or authority designated to handle comments 
regarding the notification shall be indicated if different from above:   
3. Notified under Article 2.9.2 [X], 2.10.1 [  ], 5.6.2 [  ], 5.7.1 [  ], other:  
4. Products covered (HS or CCCN where applicable, otherwise national tariff 
heading. ICS numbers may be provided in addition, where applicable): Rectifiers. 
Converters. Stabilized power supply (ICS 29.200).  
5. Title, number of pages and language(s) of the notified document: Mini-Grid 
Systems – Part 2: Application of Inverters (6 page(s), in English)   
6. Description of content: This standard covers power electronics (primarily inverters), 
which are used to connect distributed generation equipment (specifically photovoltaic 
arrays and  battery systems) to mini -grid power systems. This standard primarily deals 
with safety in construction and operation, including anti -islanding.  
This standard covers all standalone inver ters, grid -interactive inverters and multi - mode 
inverters used in mini -grids ranges between 10 kW and 1MW of total  generating capacity. 
It shall be noted that although the standard applies specifically to power electronics, it 
"touches on " issues with con nected  equipment, including wiring, fault protection, 
transformation and grounding.  
This standard applies to all inverters used in mini -grid systems with total installed inverting 
capacity between 10 and 1,000kVA -ac. Inverters which are individually  of les s than 10kVA -
ac capacity but are operated in parallel to achieve a total installed capacity equal to or 
greater than 10kVA -ac are considered to be  covered by this standard.  
7. Objective and rationale, including the nature of urgent problems where 
applicab le: Quality requirements  G/TBT/N/TZA/124  
 
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  8. Relevant documents:   
 Tanzania Government Gazette  
 IEC 62109 -1: 2010 Safety of power converters for use in photovoltaic power 
systems - Part 1: General requirements  
 IEC 62109 -2: 2011 Safety of power converters for use in photovoltaic power 
systems - Part 2: Particular requirements for inverters  
 IEC 62116: 2014 Utility -interconnected photovoltaic inverters - Test procedure of 
islanding prevention measures  
 IEC 61727: 2004 Photovoltaic (PV) systems - Characteristics of the ut ility interface 
in the event of conflict between these standards and this specification, this 
specification shall govern  
9. Proposed date of adoption:  March 2018  
Proposed date of entry into force:  Upon declaration as a mandatory by the Minister for 
Indust ry, Trade and Investment   
10. Final date for comments: 60 days from notification  
11. Texts available from: National enquiry point [X] or address, telephone and fax 
numbers and email and website addresses, if available, of other body:   
Tanzania Bureau of Standards  
MOROGORO/Sam Nujoma Road  
Ubungo P  O BOX 9524  
Tel: +255 222450206   
Email: info@tbs.go.tz , www.tbs.go.tz  
https://members.wto.org/crnattachments/2017/TBT/TZA/17_5514_00_e.pdf