Merlin Gerin YSF6 Circuit Breakers

[BIGEYE]

We have a bank of Merlin Gerin YSF6 circuit breakers, two incomers eight
feeders separated by a bus section switch.
The two incomers feed onto the busbars and the feeders take the supply from
the busbars and supply to the outgoing circuits.
The drawing for the layout shows the Incomers VT's on the incoming 'live'
side of the breaker before the busbars.
The drawing does not show VY's on the outgoing feeders. As the circuit
breakers are identical, would the VT's on the outgoing feeders be after the
busbars and circuit breakers?
TIA

 

[Eur Ing John Rye]

Hello

We have a bank of Merlin Gerin YSF6 circuit breakers, two incomers eight
feeders separated by a bus section switch. The two incomers feed onto the
busbars and the feeders take the supply from the busbars and supply to the
outgoing circuits. The drawing for the layout shows the Incomers VT's on
the incoming 'live' side of the breaker before the busbars. The drawing
does not show VY's on the outgoing feeders. As the circuit breakers are
identical, would the VT's on the outgoing feeders be after the busbars and
circuit breakers? TIA

You do not say what voltage level you are talking about, but if you are
talking about "Distribution Voltages", the feeder VTs will be next to the
outgoing cable connections.

However if they are not shown on the diagram do they actually exist ? In the
UK it would be fairly unusual to have VTs on the outgoing circuits unless
there was tariff metering involved.

John Rye

 

[BIGEYE]

Distribution voltage is 11 kV, the switchgear has VT cubicles at the back of
the switchgear.