Doc
#
E145701
D-12
D: DNP 3.0 Protocol Assignments
Electro
Industries/GaugeTech
™
Powered by Innovation™
These points are formatted as 2's complement integers. They can be used to convert
from units in terms of the Secondary of a CT or PT into units in terms of the Primary
of a CT or PT. The ratio of Numerator divided by Denominator is the ratio of Primary to
Secondary.
Shark® 100 meters typically use full scales relating primary current to 5 A and
primary voltage to 120 V. However, these Full scales can range from mAs to thou-
sands of kAs, and from mVs, to thousands of kVs. Following are example settings:
CT Example Settings
200 amps: Set the Ct-n value for 200 and the Ct-S value for 1.
800 amps: Set the Ct-n value for 800 and the Ct-S value for 1.
2,000 amps: Set the Ct-n value for 2000 and the Ct-S value for 1.
10,000 amps:Set the Ct-n value for 1000 and the Ct-S value for 10.
NOTE
: CT Denominator is fixed at 5 for 5 A units; CT Denominator is fixed at 1 for
1 A units.
PT Example Settings
277 volts (Reads 277 volts): Pt-n value is 277, Pt-d value is 277, Pt-S value is 1.
120 volts (Reads 14,400 volts): Pt-n value is 1440, Pt-d value is 120, Pt-S value is 10.
69 volts (Reads 138,000 volts): Pt-n value is 1380, Pt-d value is 69, Pt-S value is 100.
115 volts (Reads 347,000 volts): Pt-n value is 3470, Pt-d value is 115, Pt-S value is
100.
69 volts (Reads 347,000 volts): Pt-n value is 347, Pt-d value is 69, Pt-S value is 1000.