Hitachi RET670 Commissioning Manual page 133

1MRK 504 165-UEN Rev. K
Testing the operating characteristics
Preconditions
The following output signals shall be configured to binary output available: ZOUT, measured
impedance within outer impedance boundary and ZIN, measured impedance within inner impedance
boundary.
1. Set X1InFw, R1LIn, X1InRv, R1FInFw, R1FInRv, ArgLd, RLdOutFw, RLdOutRv, kLdRFw and
kLdRRv to values that are in accordance with the selectivity plan and the corresponding
operating characteristic is as shown in Figure 39.
2. Set OperationLdCh to On.
3. The test points that are to be considered for the measurement accuracy of set resistive and
reactive reaches for outer and inner boundaries are shown in Figure 39, Table
IEC18000101 V1 EN-US
Figure 39:
Where,
ΔFw =
ΔRv =
RLdInFw =
RLdInRv =
X1OutFw =
X1OutRv =
Transformer protection RET670
Commissioning manual
X1OutFw
P14
P28
D
ArgLd
Rv
P27
P13
P12
P26
D
Rv
P10
P24
P23
P9
D
Rv
Proposed test points to measure the outer and inner boundaries of operating
characteristics
RLdOutFw – (kLdRFw *RLdOutFw)
RLdOutRv – (kLdRRv *RLdOutRv)
kLdRFw * RLdOutFw
kLdRFw * RLdOutFw
X1InFw + ΔFw
X1InRv + ΔRv
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jX
X1InFw
P1
P15
R1FInRv R1FInFw
D
Rv
D
Fw
P11 P25 P18 P4
P20
RLdInRv
RLdInFw
RLdOutFw
RLdOutRv
P22
P8
D
Rv
Testing functionality by secondary injection
GUID-07387F60-E7E8-4B72-8442-90ADF0529269 v1
34 and Table 35.
R1LIn
D
Fw
P2
P16
D
Fw
ArgLd
P17
P3
D
Fw
P19
P5
R
D
P6
Fw
D
Fw
P21
P7
X1InRv
X1OutRv
IEC18000101-1-en.vsdx
Section 11
127