Settings - Detector N; Current Transformer; Overcurrent; Earth Fault, General - Protrol IPC4020 Manual

Settings – Detector n
7.4

Current Transformer

Settings – Current transformer
Parameter
Ia/Ib/Ic
Specialist
Rated Binary

Overcurrent

IPC402x has two overcurrent steps that operate independently of each other. Enable means that both
steps are activated. The start signal is common. This means that START overcurrent is generated by either
step 1 or step 2 starting. The overcurrent function measures the RMS value of all phases.
The START signal is generated if the current in a phase exceeds the set levels, Level 1 or Level 2. TRIP
overcurrent is generated after the set time delays, Delay 1 or Delay 2. 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.
Settings – Overcurrent:
Parameter
Enable
Level 1
Delay 1
Level 2
Delay 2
Event delay
Input qualifier
Trip relay
Relay pulse

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.
Protrol AB
Alfagatan 3
431 49 Mölndal, SWEDEN
Description
Primary current or ratio
Internal resolution – units per Ampere
Description
Overcurrent function activated
Overcurrent level step 1
Time delay between START and TRIP step 1
Overcurrent level step 2
Time delay between START and TRIP step 2
Time delay for TRIP interlocked with input
Input for release of TRIP
TRIP output relay
Pulse length of TRIP output signal
32
Range Factory value
1..2000 300
0..1000000 313000
Range Factory value
Yes or No No
0..10000.0 500.0
0..10000 40
0..10000.0 10000.0
0..10000 10000
0..25000 0
0..16 0 (non)
0..8 0 (non)
100..10000 500
Phone: +46 31 45 82 00
internet: www.protrol.se
e-mail: info@protrol.se
Ver 1909
Unit
A
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Unit
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A
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A
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