Protrol IPC4020, Руководство пользователя

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IPC402x-UM-2209-1-2.x.x (en)
Ensto Protrol AB
Phone: +46 31 45 82 00
Alfagatan 3 internet: www.protrol.se
431 49 Mölndal, SWEDEN
47
e-mail: info@protrol.se
Settings – Overcurrent :
Parameter Description Range Factory value Unit
Enable Overcurrent steps activated Disabled
Definite
Standard inv
Very inv
Extremely inv
Long inv Disabled -
Level 1 Overcurrent level step 1 0..10 000.0 500.0 A
Delay 1 Time delay between START and TRIP step 1 0..10 000 40 ms
TMS 1 Time multiplier at inverse time step 1 0.05..1.00 0.05 -
Level 2 Overcurrent level step 2 0..10 000.0 10 000.0 A
Delay 2 Time delay between START and TRIP step 2 0..10 000 10 000 ms
Event delay Time delay for TRIP interlocked with input 0..25 000 0 ms
Input qualifier Input for release of TRIP 0..16 0 (non) -
Trip relay TRIP output relay 0..8 0 (non) -
Relay pulse Pulse length of TRIP output signal 100..10 000 500 ms
Level 1 - set point
address
1
Address for Set point command in accordance
with IEC 60870-5-101/-104
0..16 777 214 0 -
Delay 1 - set point
address Address för Set point command in accordance
with IEC 60870-5-101/-104
0..16 777 214 0 -
8.5.2 Earth Fault, General
The IPC402x devices have two types of earth fault detectors; Protrol's patented method, and a
complementary non-directional earth fault function that can be employed when switching onto faults. The
non-directional function can also be used to detect fault connection, that a phase is missing or that one
phase is connected with the wrong polarity. Both methods work independently of each other. Both will set
the indication earth fault
START .
8.5.3 Earth Fault Protrol
IPC402x initially triggers a ground fault detection sequence on a change in the zero-sequence system. The
current
Level corresponds to the zero-sequence current measured by the detector.
A START signal is generated if the detector reaches State 5, according to Section 8.2. Ground fault TRIP is
generated after set time Delay or if immediately without delay if the reignition timer has been started by a
previous transient. If the setting Input qualifier is selected to any input, 1-16, no TRIP output signal and
message to remote control will be created until there is voltage on the selected input within set time, Event
delay . However, the internal event is always generated.
1
Enheten startar om 10 s efter senaste Set point-kommando.