Toshiba GR200 Series Instruction Manual page 1054

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Changing VCT rated current

In accordance with the ordering code, a rated current (either 1 or 5A) has been set previously

in the manufacture. If the user wishes to alter to other rated current, the user can do it by

using jumpers† on the VCT‡. This section illustrates the locations of the jumpers. To see the

actual workflows, jump to

†Note: The user needs optional jumpers for altering. To get the optional ones, order them

the sales representative with 'EP-221 optional code'.

‡Note: Remind that the user needs to alter the CPU configuration. See page 1040. One of

EP-221 jumpers is required to use for the initialization.

Rating jumpers

Rating jumpers are provided to determine the CT rated current (1 or 5A) on the VCT circuit.

Figure 5.2-6 shows the locations of the rating jumpers. They are identified with marks "W1"

to "W14" on the VCT circuit board. "W*" letters correspond to the AC analog input channel

numbers, which have been discussed previously.

Layout of VCT components

5 A rated setting (Jumper closed)

DEP settings

All [AI1_Ch*_Rating] settings are need to have DEP in order that VCT rated current will follow

the CPU configuration. The "DEP" will be set unconditionally when the IED is initialized by

the GR-TIEMS; thereby, the user need not have [AI1_Ch*_Rating] settings respectively,

Chapter Installation and setting: Changing rated current

Figure 5.2-6 Rating jumpers and locations

VCT Photograph

1 A rated setting (Jumper open)

6F2S1914 (0.49)

GRL200 (Soft 033 & 037)

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