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Section 11
Testing functionality by secondary injection
114
Note that these values identify a point inside the lens characteristic, in the Zone 2, that is
close to the boundary between zone 1 and zone 2. The START is issued, but no TRIP is
performed.
Execution of the dynamic test
The test may be performed by using two states of a sequence tool that is a basic feature of
test sets.
•
State 1: pre-test condition.
Steady voltage and current are applied in order to get a steady high impedance, that
is a point in the plane R-X that is far away from the lens characteristic. Define the
following three-phase symmetrical quantities (the phase angle is related to phase L1):
V
,
VT s
1 1
.
V
V
=
×
×
ts
t RZ
,
1
V
,
VT p
EQUATION14065 V1 EN
ForwardX
∠
=
V
arctan
ts
ForwardR
EQUATION14058 V1 EN
frequency of V
= 50 Hz.
t
I
= 0 A
50s
I
= 0 A
tfs
•
State 2: main test step.
Define the following three-phase symmetrical quantities (the phase angle is related to
phase L1):
V
VT s
,
V
1 1
.
V
=
×
×
ts
t RZ
,
1
V
VT p
,
EQUATION14065 V1 EN
ForwardX
∠
=
V
arctan
ts
ForwardR
EQUATION14058 V1 EN
frequency of V
= 50 Hz
t
I
CTs
I
I
10459
=
×
=
50
s
50
I
CTp
EQUATION14059 V1 EN
∠I
= 0º
50s
frequency of I
= 50 Hz
50s
0 1
.
1 1 1435
.
11 44
.
V
=
×
×
=
13 8
.
59 33
.
=
=
arctan
82. . 14°
8 19
.
0 1
.
1 1 1435
.
11 44
.
V
=
×
×
=
13 8
.
59 33
.
=
=
arctan
82. . 14°
8 19
.
1
= .
1 162
A
×
9000
1MRK 511 366-UUS -
(Equation 41)
(Equation 42)
(Equation 43)
(Equation 44)
(Equation 45)
Commissioning manual
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