14
CORE
FIG.
15.
Inverse Time Delay Trip
HOLE FOR
MOUNTING
BOLT
LEVER
3.0
I
I
II
1
5 10 20
100
400
--
STD. OIL
---
SPCL. LOW TEMP.
OIL
1.
MINIMUM TIME DELAY
2. 50% TIME DELAY
3. MAX
I
MUM TIME DELAY
TEMP.
30°C.
40
70
100
CURRENT AMPERES
800
1400
2000
CURRENT PER CENT
FIG.
16.
Inverse Time Delay Tripping Curves
MAGNET CIRCUIT
TRIPPING
SPRING
ARMATURE
SHAFT
RETRIEVING HANDLE
FIG.
17.
Hand Retrieve Undervoltage Trip
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