Load Breaks VNM-LE are used to under load switch three-phase alternating-current of frequency 50 Hz and voltage 6 or 10 kV deenergized circuit sections earthing by means of stationary earthing device. In switched off state load breaks makes clearly visible open gap  

 

Applications

Load breaks VNM-LE are used for under load switch three-phase alternative-current of frequency 50 Hz and voltage 6 or 10 kV  in switchgear (KRU) units, distribution transformer substations (KTP) and single-end service assembled chambers (KSO)

 

Load break executions:

I - Without earthed knife and fuses;

II - Single-earthed knife without fuses;

III - With two earthed knifes;

IV - With fuses

 

Reliability

Conforms to State Standard of Ukraine 27.1-35036863-019:2014

 

Reference designation structur

       1     2     3     4   5     6

VNM-10/630-20-Х-LE N3

1 – Advanced load break;

2 – Rated voltage [kV];

3 – Rated current [A];

4 – Short-time thermal current [kA];

5 – Switch execution;

6 – Climatic region modification and placement category under GOST 15150-69
 

VNM-LE order designation:

VNM-10/630-20-II-LE N3

 

Reliability

Conforms to State Standard of Ukraine 27.1-35036863-019:2014

 

Technical data of ВНМ-LE

Paraneter	Values
Rated voltage [kV]	6; 10
Maximum operating voltage [kV]	7,2; 12
Rated current [A]	400; 630; 1000
Short-time thermal current [kA]	20; 25; 31,5