Megohmmeters 5kV. C.A 6545 / C.A 6547. SALES PRODUCT INFORMATION Electrical testing and safety Cécile Le Goué. The Experts in insulation at 5kV. Measurements. Functional specifications. Other specifications. A special built-for-the-field design.
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C.A 6545 / C.A 6547
SALES PRODUCT INFORMATION
Electrical testing and safety
Cécile Le Goué
Clamps and plugs are perfectly insulated and measurement leads are 3m long.
A 3m guard lead is also supplied for high-insulation measurements.
A tool-bag containing all accessories
A site-adapted hard casing, IP 67 when closed and IP 53 when opened
Measurement and function selection by pressing on a push-button
A giant backlit LCD screen with digital display + bargraph
ØINSULATION measurement to 10 TW
ØVOLTAGE measurement to 5100 V
ØCAPACITANCEmeasurement of the tested circuit
ØLEAKAGE CURRENT measurement
and qualitative analysis...
Øautomatic calculation of DAR, PI and DD ratios
ØR(t) graph plotting
Insulation resistance measurement qualifies the degree of insulation in installations or equipment. It also serves as a basis for preventive maintenance.
Insulation measurement is very sensitive to variations in temperature and humidity. While testing, measurement is also initially influenced by unwanted currents.
So, it is best to carry out :
ä quantitative measurementof long duration: provided by mode "Time-controlled testing"
and R(t) graph plotting
ä a qualitative analysis with calculation of DAR, PI and DD ratios.
* DAR, PI ?
A qualitative analysis can turn out to be more clever and reliable than a simple quantitative analysis: the calculation of DAR and PI ratios enable the user to ignore climatic conditions and unwanted currents liable to invalidate measurement results.
reminder : DAR = R 1mn / R 30s & PI = R 10mn / R 1mn
* DD ?
This test is especially suited for measurement on heterogeneous and multi-layer insulation, for it can reveal a defective layer among layers with high resistance. We recommend charging the insulator with 500V for 30 minutes.
DD = I1mn(current measured after 1mn (mA))
Test voltage (Volt) x Capacitance measured (Farad)
* R(t) graph plotting :
when a time-controlled test begins, measured insulation samples are automatically memorized. It is possible to follow insulation evolution in function to the test voltage's application duration. Then R(t) graph can then be plotted out either by hand or directly on a PC screen using the MégohmView software.
delivered complete with tool-bag containing accessories :
- 2 x 3 m safety leads with HV plug and HV crocodile clip
- 1 x 3 m safety guard lead with HV rear pick up plug and HV
crocodile clip (black)
- 1 x 0.35 m rear pick up lead (blue)
- 1 x 2 m mains supply lead
- 1 user's manual in 5 languages code 689 439 A00
- 5 plastic-coated, two-sided condensed user's manual
8 m HV blue crocodile clip lead P01.2952.14
8 m HV red crocodile clip lead P01.2952.15 8 m HV black crocodile clip rear pick up lead P01.2952.16
15 m HV blue crocodile clip lead P01.2952.17
15m HV red crocodile clip lead P01.2952.18 15 m HV black crocodile clip rear pick up lead P01.2952.19
PC Software for C.A 6547 P01.1019.38A
Serial printer P01.1029.03
Serial-to-parallel adapter P01.1019.41
3 x 3m HV crocodile clip leads (blue / red / guarded black) P01.2952.20
0.35 m rear pick up lead (blue) P01.2952.21
2 m mains supply lead P01.2951.74