A5.1.3 Design specification of a switchboard with
tariff metering with cable side current- and voltage
transformers in the right panel:
Choke coil and resistor for the anti- ferro resonance
filter (L20-R20)
Current transformers for metering phase L1, L2 and
L3 (T1-T2-T3)
Current transformers for protection phase L1, L2 and
L3 (T4-T5-T6)
Voltage transformers for metering phase L1, L2 and
L3 (T20-T21-T22)
Earth connectors X9, X6
DIN00 knife-type fuses for secondary connection of
the voltage transformers (F20 en F21)
MCB for the tertiary windings of the voltage
transformers (F24)
Terminal strip for external metering equipment (X2
and X3)
Primary connectors for internal connection of the
voltage transformers (RSTI 58)
Front primary connectors for the main primary cables
(RSTI CC58)