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11. Record Keeping
The forms in this section can be used to record reference information and the initial protection settings. The PTM software also
provides printable copies of configuration and test results. If desired, make a copy and attach it to the side of the circuit breaker's
cassette or another visible location. This information should be used and maintained by the responsible personnel.
Table 12. The PT Trip Unit Reference Information and Protection Settings.
PT 20/25 Trip Unit – Trip Function Settings
Circuit Breaker No./Location:
Amperes Rating (I
):
n
Long Delay
Pickup
Time
Short Delay
Pickup
Time
Instantaneous
Pickup
Ground
Pickup
Time
Default
Language
English
Communication
No CAMS
Long Delay Curve
I
t
2
Ground Fault
Residual
Neutral
N = 100%
Power Feed Direction
Forward
ZSI
OFF
Protection Settings (Circle the Selected Value)
0.4
0.5
0.6
0.5
1
2
1.5
2
2.5
.05
0.1
0.2
Flat
2
4
5
0.2
0.4
0.6
Alarm only
0.1
0.2
0.3
Protection Settings (Circle the Selected Value)
Chinese
Modbus Port
I
t
0.5
Source/Zero Seq
N = 60%
Reverse
ON
Circuit Breaker Order Reference:
Continuous Ampere Rating (I
0.7
.75
0.8
0.9
4
7
10
3
4
5
0.3
0.4
0.5
0.1
6
7
8
1.0
0.2
0.4
0.6
Trip
0.4
0.5
0.1
0.2
It
I
t
4
N = 0%
PT UNIT USER MANUAL APRIL 2023 www.eaton.com.cn
11. Record Keeping
)
r
.95
.98
1.0
12
15
20
24
6
7
8
10
0.2
0.3
0.5
I
t Curve
2
10
12
15
OFF
0.8
1.0
OFF
0.3
0.4
0.5
I²t
I
A
r
t
sec
r
I
A
sd
t
sec
sd
I i
A
I
A
g
t
sec
g
25
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