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2. Protection and Metering Features
2. Protection and Metering Features
2.1 Trip Unit Functions
Table 1. Trip Unit Functions.
Trip Unit Type
PT 10
2.2 Protection Features
Table 2. Protection Features.
Protection
Long Delay Protection (L)
Short Delay Protection (S)
Instantaneous Protection (I)
Neutral Protection
Ground (Earth) Fault Protection
(Option G)
General
Settings may be modified by PTM software.
0.05s: nominal clear time is less than or equal to 0.08s;
0.1s: trip time is 0.06s to 0.11s;
0.2s: trip time is 0.14s to 0.2s;
0.3s: trip time is 0.21s to 0.3s;
0.5s: trip time is 0.35s to 0.5s;
For IZMY16 at tg = 0.1s, nominal current must be greater than or equal to 0.5xIn
2
PT 10 TrIP UnIT User ManUal Power TrIP (PT) UnITs MN013021EN January 2024 www.eaton.com
Catalog Number
EP-501800
Slope
Long Delay Pickup (I
)
r
Long Delay Time @ 6 x (T
)
r
Thermal Memory
High Load Alarm 1
High Load Alarm 2
Short Delay Slope
Short Delay Pickup
Short Delay Time at 8 x (I
) I
t
2
r
Short Delay Time Flat
Instantaneous
4th Pole or External Neutral Trip % x (I
Ground Fault Pickup (I
)
g
Ground Fault Alarm
Ground Fault Delay at 0.625 x
(I
) I
t (T
)
n
2
g
Ground Fault Delay Flat (T
)
g
Thermal Memory
Trip Unit Over Temperature Trip Degrees
Health monitor alarm
Protection Style
LSIG
PT 10
I
t
2
x (I
)
0.4, 0.5, 0.6, 0.7, 0.75, 0.8, 0.9, 0.95, 0.98, 1.0
n
Seconds
0.5, 1, 2, 4, 7, 10, 12, 15, 20, 24
Included
% x (I
)
OFF or % High Load Alarm 2 Adjustable step is: 1.0%
r
OFF or % High Load Alarm 1 to 120% Adjustable step is: 1.0%
Fixed, I
t
2
x (I
)
1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 10
r
Seconds
0.1, 0.2, 0.3, 0.5
Seconds
0.05, 0.1, 0.2, 0.3, 0.5
x (I
)
Off, 2, 4, 5, 6, 7, 8, 10, 12, 15
n
)
0 (Off), 60, 100
r
x (I
)
Off, 0.2, 0.4, 0.6, 0.8, 1.0
n
x (I
)
0.2, 0.4, 0.6, 1.0
n
Seconds
0.1
, 0.2, 0.3, 0.4, 0.5
Seconds
0.1
, 0.2, 0.3, 0.4, 0.5
Included
85°C (185°F) Fixed
%
1~50
Rotary Switch
Ground Fault
•
•
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