Three Phase Reference Standard CL3115

reference standard CL3115-HW

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 [note]stand-alone with one pulse input socket, or together with error calculators in stationary test benches[/note]
  • register tests
  • Specs

    Specifications Reference Standard CL3115-HW, Mains connection

    Item

    Values

    Voltage

    85 V … 265 V AC

    Frequency

    45 Hz … 65 Hz

    Power consumption

    < 30 VA

    Preheating time

    15 minutes

    Operating temperature

    5 °C … 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 … 576 V

    Voltage ranges

    60 V, 120 V, 240 V, 480 V, auto range

    Test current

    1 mA … 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 … 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).

    Screen-shots


    The equipment can be operated manually with menu keys or via RS485 remote control. A interface description for integration into 3rd party meter test equipment is available on request. Below are some screen-shots
    PQS
    Power indication in 3 phase 4 wire mode

    UI
    voltage, current, phase angle

    PQS
    Power indication in 3 phase 4 wire mode

    PQS3
    power indication in 3ph 3 wire mode

    accuracy
    accuracy measurement

    Accessories


    scanning head
    transport case

    FAQ

    The recalibration period is defined by national rules or by company policy. Typically it’s one or two years.
    The reference standard can be calibrated by any recognized body or metrological institute.

    Please note that there is a difference between recalibration and readjustment.

    An adjustment becomes necessary once the reference standard accuracy is out of the specified class. The adjustment can be done locally. There is no need to sent the instrument back to us.

    What is the recalibration period?
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    The reference standard CL3115 is by default delivered with a company calibration certificate. It can also be delivered with a calibration certificate issued by an ILAC accredited laboratory on additional cost.

    Which calibration certificates do you offer?
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    Following measurement modes are supported by the reference standard CL3115:

    • Three-phase four-wire system, active/ reactive true/apparent
    • Three-phase three-wire system, active/ reactive true/ apparent
    • Single-phase system, active/ reactive true/ apparent
    • Three elements cross connected 90° (Q390)
    • Two elements cross connected 90° (Q290)
    • Two elements cross connected 60° (Q260)
    Which measurement modes are supported?
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    A frequency proportional to the total power is generated by a signal processor, which applies to the pulse output fOUT of the CL3115. The energy output pulse constant can be set to automatic mode or manual mode. Setting range is: 1…2,000,000,000 i/kWh. The pulse output frequency is 160 kHz for End of range in voltage and current. The energy pulse is on TTL/CMOS level, burden capacity >20 mA. The range can be selected in Auto-mode or direct assigned.
    Calculation formula for the output frequency

     

    Calculation formula for the meter constant

    UR and IR are the ranges, the frequency is 160 kHz

     

    CL3115 meter constants
    3 wire and 4 wire mode
    VOLTAGE RANGE
    60V 120V 240V 480V
    C

    U

    R

    R

    E

    N

    T

    R

    A

    N

    G

    E

    0.01A 2.0×109 2.0×109 2.0×109 2.0×109
    0.02A 2.0×109 2.0×109 2.0×109 2.0×109
    0.05A 2.0×109 2.0×109 2.0×109 2.0×109
    0.1A 2.0×109 2.0×109 2.0×109 2.0×109
    0.2A 2.0×109 2.0×109 2.0×109 2.0×109
    0.5A 2.0×109 2.0×109 1.6×109 8.0×108
    1A 2.0×109 1.6×109 8.0×108 4.0×108
    2A 1.6×109 8.0×108 4.0×108 2.0×108
    5A 6.4×108 3.2×108 1.6×108 8.0×107
    10A 3.2×108 1.6×108 8.0×107 4.0×107
    20A 1.6×108 8.0×107 4.0×107 2.0×107
    50A 6.4×107 3.2×107 1.6×107 8.0×106
    100A 3.2×107 1.6×107 8.0×106 4.0×106
    Which Meter Constants are used?
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    Three Phase Reference Standard CL3115
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Published by

Lao Ren

more than 30 years experience in energy metering Product Director Shenzhen CLOU Electronics

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