G/TBT/N/UGA/1429  
22 September 2021  
(21-7064) 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:  UGANDA   
If applicable, name of local government involved (Article 3.2 and 7.2):   
2. Agency responsible:   
Uganda National Bureau of Standards  
Plot 2 -12 ByPass Link, Bweyogerere Industrial and Business Park  
P.O. Box 6329 Kampala, Uganda  
Tel: +(256) 4 1733 3250/1/2 Fax: +(256) 4 1428 6123  
E-mail: info@unbs.go.ug   
Websit e: https://www.unbs.go.ug  
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 indi cated if different from above:   
3. Notified under Article 2.9.2 [   ], 2.10.1 [   ], 5.6.2 [X], 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):  Insulating 
liquids; Medium oils and preparations, of petroleum or bituminous minerals, not 
containing biodiesel, n.e.s (HS 271019); Insulating fluids in general (ICS 29.040.01)  
5. Title, number of pages and language(s) of the notified documen t: DUS 2356:2021, 
Standard Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using VDE 
Electrodes, First Edition (8 page(s), in English)  
6. Description of content:  This Draft Uganda Standard covers the determination of the 
dielectric brea kdown voltage of insulating liquids (oils of petroleum origin, silicone fluids, 
high fire -point mineral electrical insulating oils, synthetic ester fluids and natural ester 
fluids).  This test method is applicable to insulating liquids commonly used in cabl es, 
transformers, oil circuit breakers, and similar apparatus as an insulating and cooling 
medium.  
7. Objective and rationale, including the nature of urgent problems where 
applicable:  Prevention of deceptive practices and consumer protection; Quality 
requirements  
8. Relevant documents:   
1. ASTM D235 Specification for Mineral Spirits (Petroleum Spirits) (Hydrocarbon 
Dry Cleaning Solvent)  
2. ASTM D923 Practices for Sampling Electrical Insulating Liquids  
3. ASTM D2225 Test Methods for Silicone Fluids Used for Electrical Insulation  
4. ASTM D2864 Terminology Relating to Electrical Insulating Liquids and Gases  G/TBT/N/UGA/1429  
 
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  5. ASTM D3487 -16e1, Standard Specification for Mineral Insulating Oil Used in 
Electrical Apparatus  
6. ASTM D4652 -20, Standard Specification for Silicone Liquid Used for Electrical 
Insulation  
7. ASTM D6871 -17, Standard Specification for Natural (Vegetable Oil) Ester Fluids 
Used in Electrical Apparatus  
9. Proposed date of adoption:  December 2021  
Proposed date of entry into force:  Not applicable  
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:   
Uganda National Bureau of Standards  
Plot 2 -12 ByPass Link, Bweyogerere Industrial and Business Park  
P.O. Box 6329 Kampala, Uganda  
Tel: +(256) 4 1733 3250/1/2 Fax: +(256) 4 1428 6123  
E-mail: info@unbs.go.ug   
Websit e: https://www.unbs.go.ug