EARTH-CABLE PAIR INSULATION TESTER TYPE 906 M


Normally Earth Leakage Detector (ELD) is connected to bus bars of the signaling supply which connects all the circuit powered from these bus bars and insulation resistance of these bus bars is measured with respect to ground. ELD does not measure the IR of individual pair but of the whole bus bar in the energized condition. The function of this instrument is to measure the IR (Insulation Resistance) of the signaling pair (with load, without disconnection) when the signaling pair is un energized.

SALIENT FEATURES

Instrument measures only when the signaling pair is isolated (un energized). In case a pair is energized the instrument stops functioning and a White LED indicates this condition. The meter is calibrated to read up to 50M? and a Red LED indicate on reaching the set value (1M---10M). Unit isolates itself in presence of any bus-bar voltage. Basic operating principle confirms to RDSO/SPN/256/2002. Clause 3.1.5

TECHNICAL SPECIFICATIONS :

Supply Voltage 230V AC or 110V AC + 10% 50Hz or 110V DC + 10%
Detecting Voltage 300V DC Nominal
Detecting Current 500 ľA max.
Accuracy of Measurement Within + 2% + 2 Digits
Resolution 1M?
Measurement ON CT Rack without disconnection.
Protection Indicates and stops measurement in case PAIR IS ENERGISED.
Panel Controls
Ref Setting for Low IR 1M?, 2M?, 3M?, 4M?,5M?,10M?
Meter
Digital Meter : 1M? to 50M? ( 2 Line LCD Display)
Isolation Indication : White LED with interrupted Buzzer sound
Low Insulation indication : Red LED with continuous Buzzer sound
Weight 500gm (Approx.)
Dimension 170 X 143 X 30mm (Approx.)
Accessories
Leads
Three leads for Measurement (each 5mtr)
Two leads for Power (AC+DC)
Carry Case
Provided
Operating manual
Calibration Report.
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