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Circutor MI-10KV Technical Specifications And Operating Instructions
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Circutor MI-10KV Technical Specifications And Operating Instructions

Circutor MI-10KV Technical Specifications And Operating Instructions

Electronic megohmmeter
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Hazardous voltages exist on the terminals during operation.
Although output
current
external capacities are charged to very high potentials and there
is no protection against them. So, this equipment should only be
used by a suitably trained and competent person, strictly
applying corresponding security standards.
MI-10KV
ELECTRONIC
MEGOHMMETER
• TECHNICAL SPECIFICATION
• OPERATING INSTRUCTIONS
WARNING
of the megohmmeter is limited,

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Summary of Contents for Circutor MI-10KV

  • Page 1 MI-10KV ELECTRONIC MEGOHMMETER • TECHNICAL SPECIFICATION • OPERATING INSTRUCTIONS WARNING Hazardous voltages exist on the terminals during operation. Although output current of the megohmmeter is limited, external capacities are charged to very high potentials and there is no protection against them. So, this equipment should only be used by a suitably trained and competent person, strictly applying corresponding security standards.
  • Page 2 M I-10KV DESCRIPTION The CIRCUTOR MI-10KV electronic megohmmeter is a versatile, portable, user friendly, rugged instrument. It uses an efficient, well experienced technology providing reliable, safe and accurate insulation resistance measurements up to 2.000.000MΩ, with four test voltages: 1.000, 2.000, 5.000 and 10.000 V.
  • Page 3 M I-10KV • HIGH-VOLTAGE INDICATOR LIGHT: An indicator light (LED) is warning the presence of high voltage at the output terminal during a measurement and remains lit until the discharge process is completed.

  • Page 4: Technical Specifications

    M I-10KV TECHNICAL SPECIFICATIONS MEASURING INTERVALS, TEST VOLTAGES Test Scale Output. Voltage MEASURING INTERVALS (MΩ) Multiplier Resistance `=ñ=NM (volts) NKMMM MJ=OM =OM=J=QMM OMM=J=OMKMMM OKMMM=J=OMMKMMM =ñ=O =jΩ OKMMM MJ=QM =QM=J=UMM QMM=J=QMKMMM QKMMM=J=QMMKMMM ñ=R jΩ RKMMM MJNMM NMM=J=OKMMM NKMMM=JNMMKMMM NMKMMM=JNKMMMKMMM ñ=NM =jΩ NMKMMM MJOMM OMM=J=QKMMM...
  • Page 5 M I-10KV CARRYING CASE A strong synthetic leather carrying case provides easy transportation for the instrument and attachments. The megohmmeter may operate without being removed from the carrying case. DIMENSIONS AND WEIGHT 290 x 155 x130 mm (outside dimensions without carrying case) 8 kg.
  • Page 6 M I-10KV KEYBOARD When pressed, the battery test is performed under actual consumption conditions Low resistance range. Read values at scale Read values at scale Read values at scale Higher resistance range. Read values at scale, then multiply it by 10. ON/OFF Switch Return Terminal...

  • Page 7: Operating Instructions

    M I-10KV OPERATING INSTRUCTIONS 1) Be sure that there are no voltage differences between the points at which the megohmmeter will be connected, nor between them and ground. 2) Determine the value of test voltage to be used in the insulation resistance measurement.
  • Page 8 M I-10KV 7) Before turning on the apparatus, be sure that the key corresponding to A scale is pressed. Turn on the apparatus by pressing the ON/OFF key. Then the high-voltage generator starts operating and the corresponding indication light turns on at the front panel. The meter pointer will indicate the value of the unknown resistance.
  • Page 9 M I-10KV 13) Checking battery status. Battery measurement can be performed without interrupting high-voltage generation, which will provide a better evaluation of the battery status, by pressing the BATTERY key during the measurement. So, the battery test is performed under actual consumption conditions and, for long lasting measurements, (i.e.

  • Page 10: Technical Note

    M I-10KV TECHNICAL NOTE # 32 USE OF GUARD TERMINAL IN MEGOHMMETERS When insulation resistance measurements are performed with megohmmeters, specially with high-sensitivity instruments measuring high resistance values, the use of the GUARD terminal avoids the harmful influence of stray resistances.
  • Page 11 M I-10KV The unknown resistance (Rx) is connected between Vt and R terminals. Its value determines the current passing through the circuit, which in turn is indicated by the microammeter. The value of Rx can be determined as follows: Rx =  - Ri In many cases the resistance to be measured is in parallel with other stray resistances which influence on Rx should be minimized.
  • Page 12 M I-10KV R1: Insulation resistance between primary winding and housing. R2: Insulation resistance between secondary winding and housing. If megohmmeter (terminals Vt and R) is connected to transformer terminals A and B, and considering that the resistance of the coils on each side of the transformer may be disregarded, Rx appears to be in parallel with (R1 + R2).