Mikro DPM680, Инструкция по эксплуатации

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58
Meter Operations
3.8.1
3.8.1
CT & VT raTios
The ct & Vt ratios page as shown in Fig 72
displays and allows the setting of the current
transformer (CT) and voltage transformer (VT)
ratios used to scale the metering inputs.
Fig 72 : CT & VT Ratios page
The CT primary current input can be set from 5 A
to 50,000 A but the CT secondary current
output is fixed at 5A full scale.
The VT primary voltage input can be set from
60 V to 50,000 V and the VT secondary voltage
output can be set from 60 V to 300V full scale.
noTE:
The VT secondary voltage must be lower
than the VT primary voltage.
TouCH BuTTon funCTions:
• to input new settings, touch the set (f4)
button.
• otherwise, touch the bacK (f1) button to
return to the setting sub-menu
TouCH BuTTon funCTions:
• to increase the number, touch the uP (f2)
button.
• to decrease the number, touch the DoWn
(f3) button.
• to select the next field to change, touch the
neXt (f4) button and repeat the above 2
steps.
• to save the settings and/or return to the ct
& Vt ratios sub-page, touch the bacK (f1)
button.
In the input mode, the uP (f2) and DoWn (f3)
buttons will become active and the background
colour of the active field will be changed to white.