Winco DGC-2020 - Manual (Page 16)

1-6 DGC-2020 General Information 9400200990 Rev B
CT Primary Range: 1 to 5,000 Aac in primary increments of 1 Aac
Accuracy: ∗ ±1.0% of programmed rated current or ±2 Aac
Display Resolution: 1 Aac
∗ Current metering indicates 0 A when generator current is below 2% of the full-scale rating.
Generator Frequency
Generator frequency is sensed through the generator voltage input.
Metering Range:
10 to 72 Hz (50/60 Hz)
10 to 480 (400 Hz)
Accuracy: ±0.25% or 0.05 Hz
Display Resolution: 0.1 Hz
Apparent Power
Indicates total kVA and individual line kVA (4-wire, line-to-neutral or 3-wire, line-to-line).
Measurement/Calculation Methods
Total: kVA = (V
L-L
× I
L
Ч√3) ч 1000
4-Wire, Line-to-Neutral: kVA calculated with respect to neutral
3-Wire, Line-to-Line: A-phase kVA = V
AB
× I
A
ч 1000 ч √3
B-phase kVA = V
BC
× I
B
ч 1000 ч √3
C-phase kVA = V
CA
× I
C
ч 1000 ч √3
Accuracy: ±3% or the full-scale indication or ±2 kVA ∗†
∗ kVA metering indicates 0 kVA when the generator kVA is below 2% of the full-scale rating.
† Applies when temperature is between -40
°C to +70°C.
Power Factor
Metering Range:
0.2 leading to 0.2 lagging
Calculation Method: PF = P (3-phase average) ÷ S (3-phase average)
Accuracy: ±0.02 ∗
∗ Applies when temperature is between -40°C to +70°C.
Real Power
Indicates total kW and individual line kW (4-wire, line-to-neutral or 3-wire line-to-line)
Measurement/Calculation Methods
Total:
PF × Total kVA
4-Wire, Line-to-Neutral: kW calculated with respect to neutral
3-Wire, Line-to-Line: A-phase kW = V
AB
× I
A
× PF ч 1000 ч √3
B-phase kVA = V
BC
× I
B
× PF ч 1000 ч √3
C-phase kVA = V
CA
× I
C
× PF ч 1000 ч √3
Accuracy: ±3% of the full-scale indication or ±2 kW ∗†
∗ kW metering indicates 0 kW when the generator kW is below 2% of the full-scale rating.
† Applies when temperature is between -40
°C to +70°C.
Oil Pressure
Metering Range:
0 to 145 psi or 0 to 1,000 kPa
Accuracy: ±3% of actual indication or ±2 psi or ±12 kPa (subject to accuracy of
sender)
Display Resolution: 1 psi or 1 kPa
Coolant Temperature
Metering Range:
–40 to 410 °F or –40 to 210°C
Accuracy: ±3% or actual indication or ±2° (subject to accuracy of sender)
Battery Voltage
Metering Range:
6 to 32 Vdc
Accuracy: ±3% of actual indication or ±0.2 Vdc
Display Resolution: 0.1 Vdc