4.1.6.9 Technical data
Table 243: T2PTTR Technical data
Characteristic Value
Operation accuracy Depending on the frequency of the current
measured: f
n
±2 Hz
Current measurement: ±1.5% of the set value or
±0.002 x I
n
(at currents in the range of
0.01...4.00 x I
n
)
Operate time accuracy
1)
±2.0% of the theoretical value or ±0.50 s
1) Overload current > 1.2 x Operate level temperature
4.1.6.10 Technical revision history
Table 244: T2PTTR Technical revision history
Technical revision Change
B Added the AMB_TEMP input
4.1.7 Motor load jam protection JAMPTOC
4.1.7.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Motor load jam protection JAMPTOC Ist> 51LR
4.1.7.2 Function block
GUID-FA5FAB32-8730-4985-B228-11B92DD9E626 V2 EN
Figure 120: Function block
4.1.7.3 Functionality
The motor load jam protection JAMPTOC is used for protecting the motor in stall
or mechanical jam situations during the running state.
When the motor is started, a separate function is used for the startup protection, and
JAMPTOC is normally blocked during the startup period. When the motor has
passed the starting phase, JAMPTOC monitors the magnitude of phase currents.
Section 4 1YHT530004D05 D
Protection functions
240 615 series
Technical Manual
To Next Page
Loading...
Need help?
General
