Basler-electric BE1-11g Instrukcja Użytkownika Pobierz pdf (Strona 111)

100

101

9424200994 Rev N 99

𝐴𝑐𝑡𝑢𝑎𝑙 𝑃𝑖𝑐𝑘𝑢𝑝 𝐿𝑒𝑣𝑒𝑙 =

𝑆𝑒𝑛𝑠𝑖𝑛𝑔 𝑉𝑜𝑙𝑡𝑎𝑔𝑒 𝐿𝑒𝑣𝑒𝑙

𝑅𝑒𝑠𝑡𝑟𝑎𝑖𝑛𝑡 𝑃𝑖𝑐𝑘𝑢𝑝 𝑆𝑒𝑡𝑡𝑖𝑛𝑔

× 51 𝑃ℎ𝑎𝑠𝑒 𝑃𝑖𝑐𝑘𝑢𝑝 𝑆𝑒𝑡𝑡𝑖𝑛𝑔

Equation 8. Restraint Pickup Level

Figure 63. 51 Phase Pickup Level Compensation

Phase VT Configuration

The 51/27R function can be set to monitor either Vpp or Vpn depending upon the Phase VT Connection

settings. See the Configuration chapter for details on how to set the phase VT connections. Table 34

shows which voltage measurements are used by each 51 element for each possible phase VT connection

and 51/27 voltage monitoring mode setting.

Table 34. Phase VT Connection Cross Reference

Phase VT Connection

51/27 Mode

51A

51B

51C

Vpp

Vab

Vbc

Vca

Vpn

Van

Vbn

Vcn

Vpp

Vab

Vbc

Vca

Vpn

Van

n/a

Vpn

n/a

Vbn

n/a

Vpn

n/a

Vcn

Vpp

Vab

n/a

Vpp

n/a

Vbc

n/a

Vpp

n/a

Vca

Note

For single-phase sensing, the unmonitored phase is not restrained or

controlled. These phases are marked in the table by n/a (not

applicable).

BE1-11g Inverse Overcurrent (51) Protection

1 2 ... 106 107 108 109 110 111 112 113 114 115 116 ... 671 672

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