4–103
System Setup and Setpoints – 4
Table 4-6 Standard Transformer and CT Configuration Options
When the standard connection options are used,
the transformer and CT phase angle shifts are
combined and the
ConnectType
returns the correct
combined phase angle shift. The MagnitudeCT will
compensate for the
S
3 associated with delta con
-
nected CT’s. The shift and magnitude compensation
is defined in Table 4-6. Using a reference angle of
zero degrees, the Phase A Winding phase angle
shift is obtained as follows:
ConnectType (W
n
) = ConnectXfm (Type) + Con
-
nectCT (Type)
MagnitudeCT (W
n
) = ConnectCT (Type)
Where:
ConnectXfm is the connection of any transformer
winding
ConnectCT is the connection of any CT
If the transformer connection is a Delta-ac/Delta-ab/
Inverse wye with Wye/Delta-ab/Delta-ac CT’s, the
resulting phase angle compensation shifts and CT
magnitude compensation are:
ConnectType (W1) = ConnectXfm (Delta-ac) +
ConnectCT (Wye)
ConnectType (W1) = 1 + 0 = 1 connect type 1 or 30°
ConnectType (W2) = ConnectXfm (Wye) + Con
-
nectCT (Delta-ab)
ConnectType (W2) = 0 + 11 = 11 connect type
11 or 330°
MagnitudeCT(W2) = ConnectCT (Delta-ab)
MagnitudeCT(W2) = 23 = 1/
S
3
ConnectType (W3) = ConnectXfm (Inverse Wye) +
ConnectCT (Delta-ac)
ConnectType (W3) = 6 + 1 = 7 connect type
7 or 210°
MagnitudeCT(W3) = ConnectCT (Delta-ac)
MagnitudeCT(W3) = 13 = 1/
S
3
If any transformer winding is a wye with a wye CT,
the ConnectType is returned as 0, (or 0°), the relay
automatically eliminates the zero sequence current.
Phase Angle Shift - Custom Connections
For configurations not available in the standard
six selections, a Custom Configuration selection
is available. The transformer phase compensation
is similar to the Standard Configuration selection.
However, the transformer phase shift compensa
-
tion angle does not include the CT compensation
phase shift. In the Custom Mode For Transformer
and CT Connection, the user must input the actual
compensation number as defined in the Custom
Configuration Table. The CT phase and magnitude
compensation are entered as one input using the
selection from Table 4-7. For reference, examples
of the transformer phase shift ConnectType num-
bers are indicated in Table 4-5, under the Custom
column.
Summary of Contents for M?3311A
Page 1: ...Instruction Book M 3311A Transformer Protection Relay ...
Page 30: ... 29 M 3311A Transformer Protection Relay This Page Left Intentionally Blank ...
Page 55: ...M 3311A Instruction Book 1 6 This Page Left Intentionally Blank ...
Page 87: ...M 3311A Instruction Book 2 32 This Page Left Intentionally Blank ...
Page 89: ...M 3311A Instruction Book 3 2 Figure 3 2 IPScom Main Screen ...
Page 107: ...M 3311A Instruction Book 3 20 Figure 3 22 Setup System Dialog Screen 2 3 Winding ...
Page 108: ...IPScom 3 3 21 Figure 3 23 Setup System Dialog Screen 4 Winding ...
Page 112: ...IPScom 3 3 25 Figure 3 29 I O Map Screen 4 Winding ...
Page 114: ...IPScom 3 3 27 Figure 3 31 Display All Setpoints Screen 4 Winding ...
Page 119: ...M 3311A Instruction Book 3 32 Figure 3 38 View Sequence of Events Recorder Screen ...
Page 127: ...M 3311A Instruction Book 3 40 This Page Left Intentionally Blank ...
Page 150: ...4 23 System Setup and Setpoints 4 Figure 4 14 Setup Sequence of Events Recorder Dialog Screen ...
Page 163: ...4 36 M 3311A Instruction Book Figure 4 15 IPScom Relay Setup System Dialog Screen 2 3 Winding ...
Page 166: ...4 39 System Setup and Setpoints 4 Figure 4 18 IPScom Selection Screen for Input Settings ...
Page 179: ...4 52 M 3311A Instruction Book Figure 4 28 Example of V Hz Capability and Protection Curves ...
Page 187: ...4 60 M 3311A Instruction Book Figure 4 33 49 Function Overload Curves ...
Page 229: ...4 102 M 3311A Instruction Book Table 4 5 Transformer Connections ...
Page 231: ...4 104 M 3311A Instruction Book Table 4 7 Custom Transformer and CT Configuration ...
Page 243: ...M 3311A Instruction Book 5 6 Figure 5 5 Mounting Dimensions for GE L 2 Cabinet H3 and H4 ...
Page 383: ...A 50 M 3311A Instruction Book This Page Left Intentionally Blank ...
Page 389: ...M 3311A Instruction Book B 6 This Page Left Intentionally Blank ...
Page 393: ...D 2 M 3311A Instruction Book Figure D 1 Volts Hz 24IT Inverse Curve Family 1 Inverse Square ...
Page 394: ...Inverse Time Curves Appendix D D 3 Figure D 2 Volts Hz 24IT Inverse Family Curve 2 ...
Page 395: ...D 4 M 3311A Instruction Book Figure D 3 Volts Hz 24IT Inverse Time Curve Family 3 ...
Page 396: ...Inverse Time Curves Appendix D D 5 Figure D 4 Volts Hz 24IT Inverse Curve Family 4 ...
Page 399: ...D 8 M 3311A Instruction Book Figure D 5 Definite Time Overcurrent Curve ...
Page 400: ...Inverse Time Curves Appendix D D 9 Figure D 6 Inverse Time Overcurrent Curve ...
Page 401: ...D 10 M 3311A Instruction Book Figure D 7 Very Inverse Time Overcurrent Curve ...
Page 402: ...Inverse Time Curves Appendix D D 11 Figure D 8 Extremely Inverse Time Overcurrent Curve ...
Page 439: ...F 28 M 3311A Instruction Book This Page Left Intentionally Blank ...