Federation hub · live from the running C-tier estate

Greece Athens

Type C Energised — a full control-plane hub (protection, transformer banks, cable bays and a real TSGB fleet) at 1500 kV, drilled straight out of the live 16-nation federation estate.

Back to the federation

Health

100.0%

ring Normal

Bus voltage

416kV

1.002 pu · SingleBusbar

TSGB real power

462MW

99 MVAr · pf 0.98

Inertia

9.7GVA·s

ride-through 12.1 s

TSGB machine hall (real engine)

State	Online · 2/2 units × 20 MVA
Shaft / gen-head	2999 / 1500 rpm
VAR headroom	±1127 MVAr
Stored energy	9666 MJ·s
Vibration / de-rate	1.2 mm/s · 0%
Excitation (AVR)	1.00 pu · synchronised

Cable bays (1)

Bay	Status	Carried	Loading	SF6	Current
Greece ⇄ Italy	Live	382 MW	15%	150	147 A

Transformer banks (2) — 1.5 MV ↔ 400 kV

Bank	State	Tap	Loading	Winding / oil	Cooling	Diff (87T)
SGT1	In service	0	10.1%	45 / 29 °C	Onan	0.0%
SGT2(spare) spare	Standby	0	0.0%	55 / 45 °C	Onan	0.0%

Protection stack (17)

ANSI	Function	Setpoint	State
27	Under-Voltage PTUV	< 0.80 pu, 2.5 s	Normal
59	Over-Voltage PTOV	> 1.10 pu, 1.0 s	Normal
59	Over-Voltage PTOV	> 1.15 pu, 0.5 s	Normal
81U	Under-Frequency PTUF	< 47.5 Hz, 20 s	Normal
81U	Under-Frequency PTUF	< 47.0 Hz, 0.5 s	Normal
81O	Over-Frequency PTOF	> 52.0 Hz, 0.5 s	Normal
81R	RoCoF / Loss-of-Mains PFRC	> 1.0 Hz/s	Normal
25	Synchronism Check RSYN	V 0.95–1.05, f ±0.5 Hz, ϕ<10°	Normal
87T	Transformer Differential PDIF	> 15% bias	Normal
63	Buchholz / Sudden Pressure SIMG	gas / Δp	Normal
49	Thermal Overload PTTR	> 120°C winding	Normal
87T	Transformer Differential PDIF	> 15% bias	Normal
63	Buchholz / Sudden Pressure SIMG	gas / Δp	Normal
49	Thermal Overload PTTR	> 120°C winding	Normal
51	Time Overcurrent PTOC	> 110% In, 1.0 s	Normal
50	Instantaneous Overcurrent PIOC	> 125% In	Normal
63GP	SF6 Low Pressure SIML	< 120 PSI	Normal

Recent events (SOE)

No recorded events — the hub is running clean. Reload to re-sample the live estate.