Figure 11-4 Test Circuit For 51N - ABB DPU 1500R Instruction Book

9/99
Figure 11-3. Test Circuit for Time Overcurrent, 50P-1 (3I>>1), 2-Phase 50P(3I>>) and 46 (Insc>) Functions
Figure 11-4. Test Circuit for 51N (IN>), 50N-1(IN>>1), 50P-2 (3I>>2), 50N-2 (IN>>2), 50P-3 (3I>>3), 50N-3
Maintenance and Testing
+
Control
_
Power
Ia (L1)
1-Phase Ib (L2)
Current
Van (UL1)
Vbn (UL2)
3-Phase
Vcn (UL3)
Voltage
Vn (UN)
+
1
Control
_
Power
2
3
54
53
52
1-Phase
51
Ic (L3)
50
Current
49
48
In
47
Van (UL1)
31
Vbn (UL2)
3-Phase
32
Vcn (UL3)
Voltage
33
Vn (UN)
34
(IN>>3) and 2-Phase 50P (3I>>) Functions
website:www.abb.com/papd
ABB Distribution Protection Unit 1500R
1
2
3
54
53
52
51
DPU1500R
31
32
33
34
DPU1500R
11-7