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5. Undercurrent protection for SCB

6. Reconnection inhibit protection for SCB

7. Restrike condition detection

CBPGAPC function can be used to provide the last four types of protection mentioned

in the above list.

3.7.13.2 Setting guidelines

This setting example will be done for application as shown in figure

212:

Preprocessing

Function Block

Capacitor bank

protection function

400kV

CBPGAPCSMAI

200MVAr

400kV

500/1

IED

IEC09000754-1-en.vsd

IEC09000754 V1 EN

Figure 212: Single line diagram for the application example

From figure 212 it is possible to calculate the following rated fundamental frequency

current for this SCB:

1000 200[ ]

289

3 400[ ]

MVAr

I A

= =

IEC09000755 V1 EN

(Equation 396)

or on the secondary CT side:

Section 3 1MRK504116-UUS C

IED application

498

Application manual

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General

Rated Frequency	50/60 Hz
Inputs	Analog and binary inputs
Application	Protection of power systems
Communication Protocols	IEC 61850, DNP3, Modbus
Operating Temperature Range	-25°C to +55°C
Mounting	Rack mounted
Number of Binary Inputs	Up to 48
Number of Binary Outputs	32
Protection Functions	Overcurrent Protection
Outputs	Binary outputs
Enclosure	IP 54
Type	Line Differential Protection
Number of Analog Inputs	24