Electro Industries/GaugeTech Nexus 1250, Installation & Operation Manual

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e
Electro Industries/GaugeTech
Doc #: E107-6-07-121
7-8
Losses Due to Copper Losses Due to Copper
KVA Load Losses = (Impedance) x (Bank KVA Rating)
KW = _________ x _______________
Load Loss Vars = SQRT((Load VA Losses)
2
- (Load Watt Losses)
2
)
= SQRT((______________)
2
- (________________)
2
)
It (Primary) at Rated Bank KVA and Test Phase Voltage
= (Bank KVA Rating/Test Voltage,Phase to Phase) x SQRT (3)
= (_______________/__________________) x SQRT (3)
Adjust Load Losses due to current to the Nexus Monitor Secondary Current:
Watt Losses (CU) = ((5 x CTR)/It (Primary)
2
x Load Loss Watts
KW = ((5 x ___)/___________)
2
x _______________
Var Losses (CU) = ((5 x CTR)/It (Primary)
2
x Load Loss Vars
KVA = ((5 x ___)/___________))
2
x _______________
PERCENT COMPENSATION FACTORS
Nominal Primary KVA = (120V x VTR) x (5A x CTR ) x 3
KVA = (120V x _____) x (5A x _____) x 3
%LWFE = (Watt Losses (FE) (KW) x 100)/Nominal Primary KVA
% = (_____________________ x 100)/____________
%LVFE = (VAR Losses (FE) (KW) x 100)/Nominal Primary KVA
% = (_____________________ x 100)/____________
%LWCU = (Watt Losses (CU) (KW) x 100)/Nominal Primary KVA
% = (_____________________ x 100)/____________
%LVCU = (VAR Losses (CU) (KW) x 100)/Nominal Primary KVA
% = (_____________________ x 100)/____________
Courtesy of NationalSwitchgear.com