Bender FTC470XET, Operating Manual

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50 TGH1375en/02.2010
7.2.4 Setting a CT correction factor
At channel 2 of an RCMS470-12 with address 5, the CT has to be replaced. The nominal cur-
rent of the new CT is equal to the old one but its secondary output is 50% lower than that
of the old one. The correction factor for the new CT has to be increased to 2.
1. Select: "Address 5: RCMS470-12“ from the main menu. The required setting menu will appear..
2. Click "Set response values". A list displaying each channel with its associated CT correction factor will
appear. In addition, an operator is displayed which tells you whether the factor is to be multiplied or
divided. Channel 2 still has correction *1.
3. Enter correction factor 2 into the "New value" edit field. Confirm your actions with the "Save" button
or stop your actions with "Cancel". If you have selected "Save", the new value "2" will appear in the
column on the left.
Submenu: Set response value
Channel 1 to 12:
CT correction factor
- Division by 2 to 10,
-
multiplied by 2 to 250.
Response value Overcurrent/residual current, undercurrent in mA, A
Prewarning Percentage value of the response value