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- -�r���p-- -;��� �
(AMPS) (Hz) TA?
1. 0 - 3. 0
1.
5 - 4.5
i
i
2. 5 - 7. 5
!
i
1
4 , 0
12
-
I
__ ----------------------------- ------------
For
forms 51 end up, the burden of the induction unit is
BURDENS OF INDUCTION UNIT COILS - FORMS
1-PTCKUP
____
I
RANGE
I
I
l
0 6 -
1. 8
I
•
I
!
I
5 -
4. 5
1.
I
l
I
I
I
:2. 5 - 7. 5
I
1
12
4.0
-
SIX-CYCLE TIME DELAY TELEPHONE RELAY
As mentioned, the telephone relay, OX, has a six-cycle time delay after it is
energized through the high-dropout instantaneous contacts.
this circuit, therefore, is determined by the time delay of the telephone relay.
STANDARD INSTANTANEOUS UNIT
The standard instantaneous unit is an electromagnet that attracts a hinged armature
when sufficient current is applied.
contact that
bridges
GEK-86105
TABLE
BURDENS OF INDUCTION UNIT COILS
------��f������� A �;b�v� ����s
-
-
MINIMUM PICKUP ( I2Z) WATTS FACTOR!
AT
60
1
1
50
1. 5
60
50
1.5
60
2. 5
50
2.5
4
60
50
4
TABLE VIb
VO[f�AMPS-AT FIVE AMPS
FREQ.
CALCULATED FROM INPUT
TAP
MINIMUM PICKUP
AT
60
0. 6
50
0. 6
60
1. 5
50
1. 5
60
2. 5
50
2.5
60
4.0
50
4.0
two stationary contacts when the coil is energized.
VIa
_____
118. 4
98. 6
52.5
43 . 7
18. 8
15. 7
7. 4
6. 2
as shown in Table
51
110.75
48.0
17. 75
11. 5
6. 75
5. 75
4. 48
4. 05
The armature carries a
7
------; O WE R I
15. 2
0. 13
12. 7
0. 13
6. 7
0.13
5.6
0.13
2.5
0.13
2. 1
0. 13
0. 95
0. 13
0. 79
0.13
Vlb:
AND UP
IMP.
POWER
OHMS
FACTOR
4. 43
0.32
1 . 92
0.33
0. 71
0. 35
0.46
0. 37
0. 27
0. 44
0. 23
0. 47
0. 18
0. 52
0.16
0. 47
The operating time of
"T"
shaped moving
A
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