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Types E, 4E, V4E, H, 4H, V4H, L, and V4L single-phase recloser installation and operation instructions
Series-trip solenoid
Fault-current sensing is provided by a series-connected
solenoid coil that carries line current. When a fault occurs,
tripping is initiated by the solenoid plunger.
The plunger, normally held at rest by the closing springs, is
drawn into the coil by the magnetic force generated by the
fault current. Downward travel of the plunger overtoggles
springs in the contact assembly that open the recloser
contacts. The same motion charges the closing springs in
preparation for a reclosing operation.
When the circuit is opened, the solenoid coil is
de-energized, allowing the closing springs to close the
contacts and simultaneously return the plunger to its
original position.
60
50
40
30
20
10
8
6
5
4
3
2
1
.8
.6
.5
.4
.3
.2
0.1
.08
.06
.05
.04
.03
.02
.01
TCC-252
CURRENT IN AMPERES
Figure 1 . Type H time-current characteristics, 50 amp coil
Hydraulic control mechanism
The hydraulic control mechanism provides selectivity in
timing, enabling flexibility in application and coordination
with other equipment. All timing is governed by the
hydraulic mechanism that:
1.
Controls the timing before contact opening.
2.
Establishes the time delay before the contacts reclose.
3.
Counts the number of operations.
4.
Causes the recloser to lock out when the preset
number of trip operations has been completed.
2
OPERATION INSTRUCTIONS MN280051EN May 2017
3600
3000
2400
50-AMP COIL -
RECLOSER CLEARING TIME
1800
Curve A: Maximum clearing time for
1200
one operation, variations negative
Curves B & C: Average clearing time
for one operation, variations ±10%
Tests conducted at 25C
600
480
360
300
240
180
120
60
48
36
30
24
18
12
C
6.0
B
4.8
3.6
3.0
2.4
1.8
A
1.2
0.6
Data plates
Figure 2 . Recloser operating levers, indicators, and
data plates
Fast and delayed timing characteristics
Variations of timing characteristics and sequences can be
programmed for a maximum of four operations. When
a recloser is programmed for both fast and delayed
operations, the fast operations, involving no intentional
time- delay, occur first in the sequence, according to the
recloser's "A" curve time-current characteristic. Delayed
operations are according to the recloser's "B" or "C"
time-current curve ("B" , "C" , or "D" curves for Types E,
4E, V4E, L and V4L). See Time Current Curves R280-91-10
for Type E reclosers; R280-91-8 for Type 4E; R280-91-1 for
Type H; R280-91-2 for Types 4H, V4H; R280-91-15 for Types
V4E, V4L; and R280-91-3 for Type L.
Figure 3 . Operations counter located under sleet hood
Sleet hood
Manual
operating
handle
Non-reclosing
lever
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