Contents Introduction Safety Information Features Specifications General specifications Accessories The Insulation Resistance Tester Structure Measurement Operation Measuring Voltage Internal power source Measurement Low Resistance Measurement & Continuity Check Measuring Insulation Resistance Auto-discharge function Principal of Insulation Resistance Measurement Continuous Insulation Resistance Measurement Timer Insulation Resistance Measurement Polarization Index /Dielectric Absorption Ratios PI Standard...
1. Introduction The high voltage insulation resistance tester is a handheld instrument designed primarily to make AC/DC voltage, resistance, and Continuity test / insulation resistance measurement. 2. Safety Information This Insulation resistance tester complies with the standards IEC61010 safety measurement requirement: In pollution degree 2, overvoltage category (CAT IV 600V) and double insulation.
Page 4
Caution Identifies conditions and actions that may damage the Insulation resistance tester and carrying out accurate measurement. Operating Caution Identifies conditions that user needs to take extra care during operating the Insulation resistance tester. Danger Use of instrument in a manner not specified by the manufacture may impair safety features/ protection provided by the equipment.
Page 5
Do not use the Insulation resistance tester if the battery indicator shows a Do not use the Insulation resistance tester if the battery indicator shows a battery empty. Do not use or store the Insulation resistance tester in an environment of high environment of high temperature, humidity, explosive, inflammable or strong magnetic field.
3. Features The Tester is a microcomputer controlled, High Voltage Insulation Resistance Tester with 4-range for measuring insulation resistance and AC/DC Voltage, Resistance/ Continuity test. Designed to following safety standards: IEC 61010-1 (CAT IV 600V Pollution degree 2) IEC 61010-031 (Requirements for hand-held probes) Insulation test range: 0.1MὨ...
4. Specification Insulation Resistance Measurement Rated Voltage 500V 1000V 2500V 5000V Measuring 0.005 to 0.005 to 0.05 to Range 6.000MὨ 6.000MὨ 60.00MὨ 0.05 to 60.00MὨ (Auto-Ranging) 6.01 to 6.01 to 60.1 to 60.00MὨ 60.00MὨ 600.0MὨ 60.1 to 600.0MὨ 60.1 to 60.1 to 0.61 to 600.0MὨ...
Page 8
DC/AC Voltage Measurement Range Resolution Accuracy 0.5 to DC Voltage 600.0V 0.1V ±1.0%reading±digits 0.5 to 0.1V AC Voltage 1.0%reading±5digits (40 to 60Hz) 600.0V (40 to 400Hz) ±2.5%reading±10digits (61 to 400Hz) Low Resistance measurement & Continuity Check Range Resolution Accuracy 0.12 to 600.0Ὠ 0.1Ὠ...
5. General Specifications Applicable standards: IEC 1010 CAT IV 600V overvoltage and double insulation standard Display: 6000 counts LCD display with bargraph Sampling rate: 2.5 readings per second Over range indicator: “OL” displayed Fuse: 500mA/600V (Ø6X32mm) ceramic 3AG Fast blow Zero adjust Automatic Auto power off: Power off function operates automatically after a switch...
7. The Insulation Resistance Tester Structure 1. Insulation Resistance Test/ Lock button 2. Relative & Time-down button 3. Data Hold button 4. Internet Battery Check & Time-up button 5. MAX/MIN & Insulation resistance test emergency stop button 6. LCD display 7.
Page 11
LCD Display Symbols Meaning Battery life indicator Indicator for Auto ranging measurement Indicator high voltage output or >30V DC/AC Voltage Indicator for DC voltage Indicator for AC voltage Indicator for automatically discharged Indicates for Continuity buzzer Indicates for negative reading Timer symbols Unit symbols Indicator for polarization index...
Page 12
Push buttons Switch Position(Power- Button Function Any switch position HOLD The hold function freezes the reading in the display Turns the backlight on, makes it brighter, and turns Backlight it off or auto-off Insulation resistance measurement 500V,1000V,2500V,5000V Press and hold to test or lock to Insulation TEST/LOCK Insulation resistance Range resistance measurement...
8. Measurement Operation Preparation Battery voltage checking Scope of the range switch to any location outside OFF When LCD indicates the battery sign, the accuracy could not be guaranteed if the battery voltage is below the minimum operating voltage. Please replace it with a new battery.
B. Internal Power Source Measurement 1. Disconnect the test leads. 2. Set the switch to DCV. 3. Press BATT button. 4. Read the voltage value on the LCD. After 5sec, it will auto-off or press BATT button to turn off the battery voltage function.
D.Measuring Insulation Resistance Danger Make sure to check with a high voltage detector that there is no electrical charge exists on the circuit under test. Be sure to put on a pair of insulated gloves for high voltage. ...
Check the voltage which can be applied to the circuit under test, and set the ranges switch to the desired insulation resistance range. Connect the Earth cord (black) to the Earth terminal of the circuit under test. Put the tip of the line probe (red) to the circuit under test. Then press the “PRESS TO TEST”...
Pressing and turning the “PRESS TO TEST” button clickwise to perform a continuous measurement finsulation resistance. Then the button is locked, and continuous measurement can be performed. After testing, turn the button counterclockwise to initial position, beeper is on and automatically “HOLD”...
1. Press PI/DAR to select PI or DAR Measurement. 2. LCD display PI & Time1/Time2 or DAR & Time1/Time2 3. Press and turn the “PRESS TO TEST” button clockwise to perform a timer measurement. Then the button is locked, and timer measurement can be performed.
11. PI Standard PI value 2~4 (typically3) 1~1.5 1.0 or less Tested Considered as Not acceptable (very high Fail material good insulation (older types) insulation status (older types) resistance) Modern type of (good) insulation systems Example: If the reading of B-class insulation material is 100MὨ in 1 minute, 110MὨ in 10 minutes, polarization index is 1.1 (110MὨ/100MὨ=1.1).
14. Push buttons Operation Data Hold Button (Perform any measurement as described in the operating instructions) The hold function freezes the reading on the display. Press the HOLD key momentarily to activate or to exit the hold function. Peak Hold Button (only for AC/DC voltage measurement, in MAX/MIN mode) The Peak Hold Button function captures the peak AC/DC Voltage 0.5V~600V.
1. Press REL to store the reading on the display and the “REL” indicator will appear. 2. The display will now indicate the difference between the stored value and the measured value. 3. Press REL to return to normal operation. ...
Turn the Insulation resistance tester OFF and remove all connections from the terminals. Remove the screw from the battery compartment, and separate the battery compartment from the case bottom. Replace with 8pcs of new 1.5V (LR14) batteries. ...
18. Maintenance If the insulation resistance tester is wet, dry it before use. Warning Do not attempt to repair or service your Insulation resistance tester unless you are qualified to do so and have the relevant calibration, performance test, and service information.
Need help?
Do you have a question about the MIR-505 and is the answer not in the manual?
Questions and answers