Question

SEL- 787-2E 87T 50/51 51N REF 86 SEL-3530-4 RTAC DNP3 NETWORK SWITCH SWG-1 25KV INTERTIE SWITCHGEAR 27KV, 3P3W, 1200A, 16 KA NGR TBD O 600:5 C200 TRIP/BLK CL C200 3-600:5 52-A 27KV 20KAIC SEL- 351 INIT BF 3-600:5 C200 GEN STEP UP XFMR 4500/5625KVA 65°C 25kV/4.16kV KNAN/KNAF Z=7% TAP +(2)2.5% FCAN, -(2)2.5% FCBN

          SEL-
787-2E
87T
50/51
51N
REF
86
SEL-3530-4
RTAC
DNP3
NETWORK
SWITCH
SWG-1
25KV INTERTIE
SWITCHGEAR
27KV, 3P3W, 1200A, 16 KA
NGR
TBD O
600:5
C200
TRIP/BLK CL
C200
3-600:5
52-A
27KV
20KAIC
SEL-
351
INIT BF
3-600:5
C200
GEN STEP UP XFMR
4500/5625KVA
65°C
25kV/4.16kV
KNAN/KNAF
Z=7%
TAP +(2)2.5% FCAN, -(2)2.5% FCBN

SEL-
787-2E
87T
50/51
51N
REF
86
SEL-3530-4
RTAC
DNP3
NETWORK
SWITCH
SWG-1
25KV INTERTIE
SWITCHGEAR
27KV, 3P3W, 1200A, 16 KA
NGR
TBD O
600:5
C200
TRIP/BLK CL
C200
3-600:5
52-A
27KV
20KAIC
SEL-
351
INIT BF
3-600:5
C200
GEN STEP UP XFMR
4500/5625KVA
65°C
25kV/4.16kV
KNAN/KNAF
Z=7%
TAP +(2)2.5% FCAN, -(2)2.5% FCBN

Added by Michael R.

Computer Science and Information Technology

Trishna Knowledge Systems 2018 Edition

Instant Answer

Solved by Expert Adi S

07/30/2023

Step 1

The transformer in question is a 5 MVA transformer with a primary voltage of 4.16 kV and a secondary voltage of 25 kV. Show more…

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Thanks for your feedback!

Texts: For what reason was primary protection not provided for this 5 MVA 4.16 kV to 25 kV transformer? There is one on the secondary side. SWG- 25 kV INTERTIE SWITCHGEAR 27 kV, 3P3W, 1200A, 16 kA /an 52-AV 27 kV 20 KAIC SEL-351 SEL-787-2E 50/51 51N REF INIT BF 50N/ 50 SEL-3530-4 DNP3 RTAC NETWORK SWITCH NGR TBD 00:5 GEN STEP UP XFMR 4500/5625 KVA DoS9 25 kV/4.16 kV KNAN/KNAF Z=7% TAP +(2)2.5% FCAN, -(2)2.5% FCBN