Event number
Event channel
Event block name
Event code
Description
4491
70
RTD2
11
S6 Meas Invalid
4492
70
RTD2
12
S7 Meas Ok
4493
70
RTD2
13
S7 Meas Invalid
4494
70
RTD2
14
S8 Meas Ok
4495
70
RTD2
15
S8 Meas Invalid
4496
70
RTD2
16
S9 Meas Ok
4497
70
RTD2
17
S9 Meas Invalid
4498
70
RTD2
18
S10 Meas Ok
4499
70
RTD2
19
S10 Meas Invalid
4500
70
RTD2
20
S11 Meas Ok
4501
70
RTD2
21
S11 Meas Invalid
4502
70
RTD2
22
S12 Meas Ok
4503
70
RTD2
23
S12 Meas Invalid
4504
70
RTD2
24
S13 Meas Ok
4505
70
RTD2
25
S13 Meas Invalid
4506
70
RTD2
26
S14 Meas Ok
4507
70
RTD2
27
S14 Meas Invalid
4508
70
RTD2
28
S15 Meas Ok
4509
70
RTD2
29
S15 Meas Invalid
4510
70
RTD2
30
S16 Meas Ok
4511
70
RTD2
31
S16 Meas Invalid
5.3.18 Arc fault protection (IArc>/I0Arc>; 50Arc/50NArc)
Arc faults occur for a multitude of reasons: e.g. insulation failure, incorrect operation of the protected
device, corrosion, overvoltage, dirt, moisture, incorrect wiring, or even because of aging caused by
electric load. It is important to detect the arc as fast as possible in order to minimize its effects. Using
arc sensors to detect arc faults is much faster than merely measuring currents and voltages. In busbar
protection IEDs with normal protection can be too slow to disconnect arcs within a safe time frame. For
example, it may be necessary to delay operation time for hundreds of milliseconds when setting up an
overcurrent protection relay to control the feeder breakers to achieve selectivity. This delay can be
avoided by using arc protection. The arc protection card has a high-speed output to trip signals faster
as well as to extend the speed of arc protection.
A
AQ
Q-T215
-T215
Instruction manual
Version: 2.04
215