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3 Z
A L T E R N A T I N G C U B R E N T M E A S U R E M E N T S W I T H C U R R E N T T R A N S F O R M E R P M 9 2 4 5
( F i g . 2 6 , p a s e 1 5 0 ) .
- S e l e c t f u n c t i o n A - r m s 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.
I n a u t o m a t i c r a n g i n g m o d e t h e U P l e v e l i s 2 1 0 0 a n d t h e D O W N l e v e l i s 0 1 8 0 .
- 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 :
Avaifabf e ranges are: mA terminal
0.2 A -2O A terminal
2.000 gA
200.0 mA
20.00 pA
2.000 A
200.0 pA
20.00 A
2.000 mA
20.00 mA
Only ranges 200 mA or lower are being used.
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 y ( D i s p l a y > 2 1 0 0 ) .
- C o n n e c t t h e c u r r e n t t r a n s f o r m e r P M 9 2 4 5 t o t h e P M 2 5 2 1 a s s h o w n i n F i g . 2 6 , p a g e 1 5 0 .
R e m a r k :
Before measuring, always connect the current transformer to the PM 2521 Íirst. Avoid contamination of the
coÍe-parts. The transfer factor of the PM 9245 is 1000 (100 A = 100 mA). The Írequency range is 45 Hz up
t o 1 k H z .
As the high current measurements with the PM 9245 are made in the A- rms function of the PM 2521 , they
have the same Íacilities as the alternating current measurements. Refer to Chapter 6.4.1.5.
6.4.2.3. Data hold measurements with probe PM 9263 (Fig. 27, page l5O).
G E N E R A L
W i t h t h e d a t a h o l d p r o b e P M 9 2 6 3 t h e d a t a o n t h e d i s p l a y c a n b e f r e e z e d w h i l e m e a s u r i n g . T h e d a t a h o l d m o d e
i s v a l i d f o r a l l f u n c t i o n s e x c e p t t h e s Í u n c t i o n s . I n t h e s f u n c t i o n t h e d a t a h o l d m o d e s w i t c h e s o n t h e s p e c i a l
t r i g g e r m o d e ( R e f e r t o c h a p t e r 6 . 4 . 1 . 1 0 ) .
D A T A H O L D M E A S U R E M E N T S
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C o n n e c t t h e d a t a h o l d p r o b e P M 9 2 6 3 t o t h e P M 2 5 2 1 a s s h o w n i n f i g u r e 2 7 , p a g e 1 5 0 .
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S e l e c t t h e d e s i r e d f u n c t i o n a n d m e a s u r i n g m o d e .
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C o n n e c t a z e r o l e a d t o t h e 0 i n p u t o f t h e p r o b e .
T h i s c a n b e d o n e i n t h e f o l l o w i n g w a y s :
.
W i t h a s e p a r a t e b a n a n a - p l u g l e a d c o n n e c t e d t o t h e " 0 " i n p u t o Í t h e p r o b e . T h i s l e a d i s n o t i n c l u d e d i n
t h e d e l i v e r y o Í t h e p r o b e .
o W i t h a z e r o i n g c l i p - o n c a b l e s u p p l i e d w i t h t h e p r o b e o n t h e p r o b e - r r p .
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S e l e c t t h e m o s t s u i t a b l e t e s t p i n f o r t h e p r o b e - t i p .
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P u s h t h e s l i d e s w i t c h ( w h i t e r i n g ) o n t h e p r o b e i n p o s i t i o n R U N N I N G ( a w a y f r o m t h e p r o b e - t i p ) .
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P l a c e t h e p r o b e - t i p o n t h e m e a s u r i n g s p o t a n d m e a s u r e t h e i n p u t s i g n a l .
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P u s h t h e s l i d e - s w i t c h , w h i l e m e a s u r i n g t o p o s i t i o n H O L D ( t o w a r d s t h e p r o b e - t i p ) . T h e d a t a o n t h e d i s p l a y
i s n o w h e l d ( f r e e z e d ) .
R e m a r k :
O n l y t h e d a t a o n t h e d i s p l a y i s h e l d . M e a n w h i l e t h e P M 2 5 2 1 c o n t i n u e s m e a s u r i n g .
The maximum voltage between probe-tip VSland 0 is 3OVrms.
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