8.3.3. SEF Directional Controls (67SEF). Entec ETMFC610

Multi-Function Control ETMFC610

GROUP # / DIRECTION / GROUND / M.T.A

[GROUND]

Type: NONE

>M.T.A: 135

M.P.V(3V0): 0.30

Block OC: YES

[0~359:1Lead] http://www.entecene.co.kr

Range 0 ~ 359 degree

Default 135 Step 1 degree

Enter the maximum torque angle, The maximum torque angle setting determines the range of current direction for the polarized voltage.

For system with high-resistance grounding or floating neutrals, the ground maximum torque angle will be approximately ∠ 135 degree.

For system with solidly grounded or resistively grounded the maximum torque angle will be approximately ∠ 90 degree.

GROUP # / DIRECTION / GROUND / M.P.V(3V0)

Range 0(OFF), 0.10~0.80 xVT

[GROUND]

Type: NONE

M.T.A: 135

>M.P.V(3V0): 0.30

Block OC: YES

0(OFF),0.10~0.80 xVT

Default 0.30 Step 0.01 xVT

Set Minimum Polarizing Voltage to check ground fault direction.

Voltage shall be higher than this set value to check the direction.

Otherwise, direction check will be blocked. In case of setting 0(OFF), direction checking is disabled.

GROUP # / DIRECTION / GROUND / Block OC

Range NO, YES

[GROUND]

Type: NONE

M.T.A: 135

M.P.V(-3V0): 0.30

>Block OC: YES

[NO/YES]

Default minimum polarizing voltage set.

NO :

YES

Trip on over current element.

Step ~

Select whether to trip when polarizing voltage is dropped below

YES : No trip on over current element.

8.3.3. SEF Directional Controls (67SEF)

The SEF direction control process a very similar method to the GROUND directional control. But the default value of SEF directional element “Type” is ‘NONE’, and default value of “M.T.A(V0) is ‘135°’ .

EN HANCED TEC HNOLOGY 265