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6.4.2.
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6.4-2. 1. High tension measurements with HTprobe
pM 9246 (Fig.24,page
146)_
G E N E R A L
T h e H T p r o b e P M 9 2 4 6 i s s u i t a b l e f o r m e a s u r i n g d i r e c t v o l t a g e s u p t o 3 0 k V . T h e a t t e n u a t i o n f a c t o r o f t h e
p r o b e i s 1 0 0 0 . T h e m e a s u r e m e n t s a r e c a r r i e d o u t i n t h e d i r e c t v o l t a g e m e a s u r e m e n t f u n c t i o n o f t h e P M 2 5 2 1 .
A l l t h e f a c i l i t i e s t h a t a r e v a l i d i n t h e d i r e c t v o l t á g e m e a s u r e m e n t s f u n c t i o n a r e a l s o v a l i d f o r t h e H T m e a s u r e m e n t s .
H I G H T E N S I O N M E A S U R E M E N T S
-
S e l e c t f u n c t i o n V :
w i t h t h e f u n c t i o n s e l e c t o r .
-
s e l e c t t h e m a n u a l o r a u t o m a t i c r a n g i n g m o d e w i t h p u s h b u t t o n A U T O / M A N * .
R e m a r k :
Manual ranging is indicated with a * on the display.
In automatic ranging mode the uP level is 21000 and the DowN level is 01go0.
-
S e l e c t i n m a n u a l r a n g i n g m o d e t h e c o r r e c t r a n g e w i t h p u s h b u t t o n s U p o r D o w N .
R e m a r k :
Available ranges are: 200.00 mV
2.0000 v
20.000 v
200.00 v
2000.0 v
Range 2000 V is no being used with HT measurements.
O v e r l o a d i s i n d i c a t e d w i t h O L o n t h e d i s p l a V ( D i s p l a y > 2 1 0 0 0 )
- C o n n e c t t h e H T p r o b e P M g 2 4 6 t o t h e P M 2 5 2 1 l a s s h o w n i n F i g . 2 4 , p a g e
1 4 6 .
- S e l e c t 1 0 M i m p e d a n c e o n t h e p r o b e a n d m e a s u r e t h e h i g h v o l t a g e .
R e m a r k :
The polarity indicated is that of the V terminal with respect to the 0 terminal.
With the PM 9246 voltages up to 30 kV can be measured. The attenuation factor of the probe is 1000x.
When measuring, attention must be paid to safe earth connections.
As HT measurements are made in the V-
function of the PM 2521 . the HT measurements have the same
f a c i f i t i e s a s d c v o l t a g e m e a s u r e m e n t s . R e f e r t o C h a p t e r 6 . 7 . 1 . 1 .
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