2TJM10 IDMT EARTH FAULT PROTECTION 2TJM10 IDMT OVERCURRENT AND EARTH FAULT PROTECTION 2TJM11 IDMT AND INSTANTANEOUS EARTH FAULT PROTECTION 2TJM11 IDMT AND INSTANTANEOUS OVERCURRENT AND EARTH FAULT PROTECTION 2TJM12 DIRECTIONAL OVERCURRENT, 45° LEADING POWER FACTOR 2TJM12 DIRECTIONAL EARTH FAULT, 121/2° LAGGING POWER FACTOR AND DIRECTIONAL OVERCURRENT 2TJM20 IDMT EARTH FAULT PROTECTION 2TJM21 IDMT AND INSTANTANEOUS EARTH FAULT PROTECTION 2TJM21 IDMT AND INSTANTANEOUS OVERCURRENT AND EARTH FAULT PROTECTION 2TJM30 IDMT EARTH FAULT PROTECTION 2TJM30 IDMT OVERCURRENT AND EARTH FAULT PROTECTION 2TJM31 IDMT AND INSTANTANEOUS OVERCURRENT AND EARTH FAULT PROTECTION 2TJM60 IDMT EARTH FAULT PROTECTION 2TJM60 WITH INTERNAL MCAA REPEAT RELAY
1 1 2 2 3
4 5 5 5 6 6 6 7 7
7
DIAGRAMS
2TJM10
9
P1
2TJM10 EF
(27) Line current transformers
S1 A
S1 B
S2
S1
10
1
2
(28)
(1) 3
(3) 4
(2)
(4)
case earth
C S2
S2
P2
Figure 1 2TJM10 IDMT Earth Fault Protection
2TJM10
5
2TJM10 OC
(23) 8
EF
(26) Line current transformers
9
P1
OC
(27) S1 A
S1 B
S2
S1
A
6
1
(24)
(1)
(3)
3
4
7 (25)
(2) 11
10
(5)
EF
(28)
case earth
C
S2
P2
Notes: 1 The diagrams show relay safety earthing and typical current circuit earthing. 2 All relay terminals show the Vedette case numbering and Reymos numbering (in brackets) 3 Relay contacts are shown as supplied with standard wiring, where a different arrangement is required please enquire.
Figure 3 2TJM11 IDMT and Instantaneous Earth Fault Protection
2TJM11 IDMT OC 5 (23)
IDMT EF
Inst EF
(26) IDMT OC 9
Inst OC
8
P1
(27) Line current transformers
S1 A
S1 B
S2
S1
2TJM11 Inst OC
A-IDMT
6
1
(24)
(1)
(3)
3
4
7
(2)
(25)
A-Inst
2 IDMT & Inst O/C IDMT O/C & EF
(4)
10 (28)
case earth
C-IDMT
C S2
S2
P2 C-Inst
11
EF-IDMT
(5)
12
IDMT & Inst EF
(7)
EF-Inst
Notes: 1 The diagrams show relay safety earthing and typical current circuit earthing. 2 All relay terminals show the Vedette case numbering and Reymos numbering (in brackets) 3 Relay contacts are shown as supplied with standard wiring, where a different arrangement is required please enquire.
Figure 4 2TJM11 IDMT and Instantaneous Overcurrent and Earth Fault Protection
2
7
DIAGRAMS
2TJM12 (B)
2TJM12 (A)
10 5
P1 Line current transformers
OC
S1 A
S1 B
S2
9
10
6
5
9
10
6
5
case earth
case earth
S1
OC
2TJM12 (C) OC
9 6
case earth
C S2
S2
P2 A
C
Phase Rotation
B Voltage Transformer A
Relays will operate for a fault in this direction
B C
2TJM12
1
2TJM12 A
3
2
1
4
3
2TJM12 A
2
1
4
3
A
2
4
Notes: 1 The diagrams show relay safety earthing and typical current circuit earthing. 2 All relay terminals show the Vedette case numbering and Reymos numbering (in brackets) 3 Relay contacts are shown as supplied with standard wiring, where a different arrangement is required please enquire.
Figure 5 2TJM12 Directional Overcurrent, 45º Leading Power Factor (using 90º connection)
3
7
DIAGRAMS
2TJM12 (B)
2TJM12 (A)
10 5
P1 Line current transformers
OC
S1
S1 A
B S2
9
10
6
5
case earth
S1
OC
case earth
2TJM12 (C)
9
10
6
5
OC
9 6
case earth
C S2
S2
P2 A
C
Phase Rotation
B Voltage Transformer A B
Relays will operate for a fault in this direction
C VL
Vn
Notes: 1 The diagrams show relay safety earthing and typical current circuit earthing. 2 All relay terminals show the Vedette case numbering and Reymos numbering (in brackets) 3 Relay contacts are shown as supplied with standard wiring, where a different arrangement is required please enquire.
Figure 6
2TJM12 showing Directional Earth Fault 12.5º Lagging Power Factor and Directional Overcurrent (with 90º connection, 0º power factor)
Figure 8 2TJM21 IDMT and Instantaneous Earth Fault Protection
2TJM21 IDMT OC 5 (23) 8
IDMT EF
(26) IDMT OC 9
P1
(27) Line current transformers
S1 A
S1 B
S2
S1
2TJM21 Inst OC
Inst EF Inst OC
A-IDMT
6
1
(24)
(1)
(3)
3
4
7
(2)
(25)
A-Inst
2
(4)
IDMT & Inst O/C IDMT & Inst O/C & EF
10 (28)
case earth
C-IDMT
C S2
S2
P2 C-Inst
11
EF-IDMT
(5)
Notes: 1 The diagrams show relay safety earthing and typical current circuit earthing. 2 All relay terminals show the Vedette case numbering and Reymos numbering (in brackets) 3 Relay contacts are shown as supplied with standard wiring, where a different arrangement is required please enquire.
12
IDMT & Inst EF
(7)
EF-Inst
Figure 9 2TJM21 IDMT and Instantaneous Overcurrent and Earth Fault Protection 5
7
DIAGRAMS
2TJM30 EF
9
P1
2TJM30
(27) S1
Line current transformers
A
S1 B
S2
10
+
(28)
case earth
S1 C
S2
Circuit Breaker Reed Relay
1
Trip Coil
2
(1) 3
(3) 4
(2)
(4)
-
S2 Note: Circuit breaker trip coil circuit must be connected to terminals 1 and 2
P2
Figure 10 2TJM30 IDMT Fault Protection 2TJM30
2TJM30 OC
5 (23)
(26) Line current transformers
P1
(27) S1
S1 A
B S2
OC
(14)
Trip Coil
2
-
(13) EF
7 OC
10 (28)
case earth
S1
1
(25) OC
9
+
(24) EF
8
6
Circuit Breaker Reed Relay
3
4
(1)
(3)
C S2
S2 Note: Circuit breaker trip coil circuit must be connected to terminals 1 and 2
P2
Figure 11 2TJM30 IDMT and Overcurrent Earth Fault Protection
2TJM31 IDMT OC 5 (23)
IDMT EF
Inst EF
(26) IDMT OC 9
Inst OC
8
P1
(27) Line current transformers
S1 A
S1 B
S2
S1
2TJM31 Inst OC
6
+
1
Circuit Breaker OC
Reed Relay
(1)
(24)
-
(3) EF
IDMT
7 OC
(25) 10
OC
(28)
case earth
EF
C S2
Trip Coil
2
Inst S2
OC
P2 3
4
(2)
(4)
IDMT & Inst O/C & EF 11 (5)
Notes: 1 The diagrams show relay safety earthing and typical current circuit earthing. 2 All relay terminals show the Vedette case numbering and Reymos numbering (in brackets) 3 Relay contacts are shown as supplied with standard wiring, where a different arrangement is required please enquire.
OC-Inst
EF-Inst
12
Inst O/C & EF
(7)
OC-Inst
Figure 12 2TJM31 IDMT and Instantaneous Overcurrent and Earth Fault Protection 6
7
DIAGRAMS
2TJM60
9
P1
2TJM60 EF
(27) Line current transformers
S1 A
S1 B
10 +
(28)
case earth
S1 C
S2
S2
1
Circuit Breaker Reed Relay
2
(1) 3
(3) 4
(2)
(4)
Trip Coil
S2 Note: Reed relay must be connected in series with circuit breaker trip coil.
P2
Figure 13 2TJM60 IDMT Earth Fault Protection, with Series Operated Reed Relay
2TJM60
2 (13)
OC
MCAA2
1
-
(14) Circuit Breaker
+
3
4
(1) 5
(3) 6
(2)
(4)
Trip Coil -
Notes: 1 The diagrams show relay safety earthing and typical current circuit earthing. 2 All relay terminals show the Vedette case numbering and Reymos numbering (in brackets) 3 Relay contacts are shown as supplied with standard wiring, where a different arrangement is required please enquire.
Figure 14 Alternative Connections for Fig.13 with Internal MCAA Repeat Relay
