Basler Electric BE1-87T - Manual (Page 83)

9171300990 Rev V BE1-87T Installation 4-41
) 42 . 2 ( 4 23
) 3 6 . 10 ( 35
3
−
+
+ = S
= 38.8
Because the maximum saturation factor S
F
for this example is less than 0.5 (from Step 16), use
the next highest slope. Select position F which = 40%.
For examples of suitable slope settings, see Table 4-2.
Table 4-2. Examples of Suitable Slope Settings
Maximum
Mismatch in %
(M
T
)
Current Rating of Power
Transformer in
Multiples of TAP (I
T
)
Recommended Minimum
RESTRAINED PICKUP
LEVEL Setting* (Slope)
2.5 1.5 15
2.5 2 20
5 2 25
10 1.5 30
12.5 1.5 35
15 1.5 40
15 2 45
15 2.5 50
20 1.5 55
20 2 60
* S
F
=V
B
/V
CE
If S
F
>0.5, set the RESTRAINED PICKUP LEVEL setting (slope) to S=60%.