Three Phase Reference Standard CL3115

reference standard CL3115
reference standard CL3115

This reference standard has accuracy class 0.02 related to apparent power
It can be used for

  • voltage measurement
  • current measurement
  • phase angle measurement
  • frequency measurement
  • harmonics analysis up to the 63th
  • power measurement, active-, reactive-, apparent
  • self consumption measurements
  • accuracy error calculations stand-alone with one pulse input socket, or together with error calculators in stationary test benches
  • register tests
Specifications

Specifications Reference Standard CL3115-HW, Mains connection
Item Values
Voltage 85 V to 265 V AC
Frequency 45 Hz to 65 Hz
Power consumption < 30 VA
Preheating time 15 minutes
Operating temperature 5 °C to 45 °C
Max. relative humidity ≤ 85 %, not condensate
Surge voltage protection class C
Installation category III
Pollution degree 2
Weight approx. 13 kg
Dimensions 19” 3 units,
H x W x D: 132,5 mm x 483 mm x 405 mm
Specifications Reference Standard CL3115-HW, measurement values
Item Values
Test voltage, phase-neutral 30 V to 576 V
Voltage ranges 60 V, 120 V, 240 V, 480 V, auto range
Test current 1 mA to 120 A
Current ranges 10 mA, 20 mA, 50 mA, 0.1 A, 0.2 A, 0.5 A, 1 A, 2 A,
5 A, 10 A, 20 A, 50 A, 100 A, auto range
Frequency range, fundamental wave 40 Hz to 70 Hz
Bandwidth 4 kHz
Voltage measurement accuracy < 0.01 %
Voltage measurement drift < 35 ppm/year
Current measurement accuracy < 25 mA < 0.02 %
Current measurement accuracy ≥ 25 mA < 0.01 %
Current measurement drift < 65 ppm/year
Power measurement accuracy P, Q, S < 0.02 % (current ≥ 25 mA and λ = 1)
Power measurement drift < 100 ppm/year
Phase angle < 0.01° (current ≥ 25 mA and voltage > 30 V)
Frequency 0.005 Hz
Voltage temperature drift < 2,5 ppm/K
Current temperature drift < 5 ppm/K
Power temperature drift < 7.5 ppm/K
Errors are independent of measurement mode and when using auto range. The reference standard provides a power proportional frequency output (160 kHz nominal).

Meter Constant Table

CL3115 power constants
60 V120 V240 V480 V
0.01 A2 x 1092 x 1092 x 1092 x 109
0.02 A2 x 1092 x 1092 x 1092 x 109
0.05 A2 x 1092 x 1092 x 1092 x 109
0.1 A2 x 1092 x 1092 x 1092 x 109
0.2 A2 x 1092 x 1092 x 1092 x 109
0.5 A2 x 1092 x 1091.6 x 1098 x 108
1 A2 x 1091.6 x 1098 x 1084 x 108
2 A1.6 x 1098 x 1084 x 1082 x 108
5 A6.4 x 1083.2 x 1081.6 x 1088 x 107
10 A3.2 x 1081.6 x 1088 x 1074 x 107
20 A1.6 x 1088 x 1074 x 1072 x 107
50 A6.4 x 1073.2 x 1071.6 x 1078 x 106
100 A3.2 x 1071.6 x 1078 x 1064 x 106
The table refers to the automatic settings. It's valid for 3 wire- and 4 wire measuring mode.

The output frequency for end of range in voltage/current pair with three phase connection is 160 kHz. The power pulses are on TTL/CMOS level. The burden capacity is > 20 mA.

Calculation formulas

Frequency

frequency calculation
f = frequency
UR = voltage range
IR = current range
c = reference meter constant

Constant

constant calculation

The meter constants can be set in the settings menu or selected automatic. Setting range is 1 i / kWh to 2 x 109 i / kWh.

Screenshots

The equipment can be operated manually with menu keys or via RS-485 remote control. A interface description for integration into 3rd party meter test equipment is available on request. Below are some screen-shots



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