Test stand for CO2 accumulator electric heaters

M a c i e j O s t r ę g a 1 0 . 1 2 . 2 0 1 4

Status

• Test stand description document released• Test stand for CO2 accumulator electric heater.docx (DFS)

• Excel database for measurements released• Accumulator electric heater - DATA.xlsx (DFS)

• Test stand under construction• New heaters ordered (delivery -January)

Test stand

Test stand

Designed by Tomasz Kucharski

Test stand - under construction

Test procedure

• electrical measurements• heating with cooling (setpoint high)• no heating with cooling (setpoint -40 °C)

more details:(DFS) …/PROJECTS/ Accumulator_Heaters_Teststand/DOCUMENTS/

Test stand for CO2 accumulator electric heater.docxAccumulator electric heater - DATA.xlsx

Electrical measurements• resistance of the heater• insulation resistance• earth leakage current

more details:(DFS) …/PROJECTS/ Accumulator_Heaters_Teststand/DOCUMENTS/

Test stand for CO2 accumulator electric heater.docxAccumulator electric heater - DATA.xlsx

Calculated EH resistance [Ω]

Measured EH resistance [Ω]

Insulation resistance [MΩ]

Comments

Calculated earth leakage current at 230V Measured earth leakage currentVoltage during the measurements [V]

Calculated insulation resistance [MΩ]

Test voltage >> 50V 100V 250V 500V 1000V [mA] [uA] [mA] [uA]

52.9 52.8

L/PE - - - - 11000 over the measurement range ( >11 GΩ) 2.09091E-05 0.021 - 0.021 230.0 10952.381

N/PE - - - - 11000 over the measurement range ( >11 GΩ) 2.09091E-05 0.021 30.000 - 230.0 0.008

TODO

• electrical and mechanical assembly

• chiller filling (C6F14)