GEK-49950
TABLE V
1.0 - 1 2.0 A M PE RE RANGE SETI INGS
M od el
I FC95
Tap
1.0 1.2 1.5 2.0 2. 5 3.0 4.0 5.0 6.0 7.0 8.0 1 0.0 1 2.0
Cont i nu ous
Current
2.0 2.3 2.7 3.3 3.9 4. 5 5.5 6.6 7. 5 8.4 9.3 1 0.9 1 2. 5
HIGH-SE I S M I C IN STANTANEOU S UN IT
The i nsta nta neous coil is tapp ed for operat ion on eit h er one of two ra nges (H or L ).
Sel ect ion of the h i gh or l ow ra nge is det er m i ned b y t h e pos it ion of the l i nk l ocat ion on t h e
t op of the support structure. See Figure 1 a nd Tabl e V I.
TABLE V I
Hi gh-Seis mic
Li nk
Co nti nuo us
O ne
K
I nsta nta neo us
Positio n
Ra nge
Rati ng
Seco nd
U n it (Amperes)
(Amp eres)t
(Amp eres)
Rati ng
L
2 - 10
3.7
2 -
so
130
16 ,900
H
10 -
so
7.S
L
6 - 30
10.2
6 - 1SO
260
67 ,600
H
30 -1SO
19.6
tTh e ra nge is approx i mate, w hi ch m ea ns t hat t h e 2 -10 , 10 -SO may b e 2 - 8 , 8 -SO. T her e wi ll
always b e at l east one a mp er e overlap b etween t he max i m u m L s ett ing a nd t he m i n i mu m
H s ett i n g. Wh enever p oss ible, b e sure to s el ect t h e h i gher ra nge, s i nce it has t h e h i g h er
cont i nu ous rat i n g.
ttH igh er currents may b e appl ied for s horter lengt hs of t i me i n a ccorda n ce w ith th e
for mula:
I
= VKiT
Since the i nsta nta neous u n it coil is i n s er i es w it h the t i me-over current u n it coil, s ee Tables
Ill, IV, V a nd V I to det er mine t he current-l imit ing element for b ot h cont i nuous a n d sh ort
t i me rat i n gs.
6
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