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Electro Industries/GaugeTech

Doc # E145701 D-9

Phase Angle ( Points 20 - 25 )

These points are formatted as 2's complement integers. They represent angles from -180.0

(0x0F8F8) to +180.0

(0x00708).

CT & PT Ratios ( Points 26 - 31 )

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 meters typically use Full Scales relating Primary Current to 5 Amps and Primary Voltage to

120 V. However, these Full scales can range from mAs to thousands of kAs, or 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 ampere unit.

CT Denominator is fixed at 1 for 1 ampere unit.

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.

Point Reading

20 Phase A Current Angle

21 Phase B Current Angle

22 Phase C Current Angle

23 Volts A-B Angle

24 Volts B-C Angle

25 Volts C-A Angle

Point Value

26 CT Ratio Numerator

27 CT Ratio Multiplier

28 CT Ratio Denominator

29 PT Ratio Numerator

30 PT Ratio Multiplier

31 PT Ratio Denominator

1 2 ... 100 101 102 103 104 105 106 107 108 109 110 ... 113 114

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