MULTI MEASURING INSTRUMENTS MIS-PV2 Manual de usuario

Thank you for selecting our 4 range digital insulation tester

MIS-PV2 for PV systems.

Before using the instrument, read this instruction manual

thoroughly and operate properly.

Keep this manual carefully whenever you can refer if

necessary.

MAIN FEATURES

(1) Multiple rating insulation resistance tester which can change 4 applied voltage by switch to

select appropriate voltage for the object to be tested.

(2) This digital multiple rating insulation resistance tester has big LCD window showing

numerical value display and analog indicator which enable an easy reading.

(3) Measurable insulation resistance according to the generated voltage in PV systems.

(4) Can read the displayed value in the dark by LED back light of LCD.

(5) Auto power off function enables min. power consumption in case of forgetting switch power

off.

(6) Convenient structure design for the use – body cover can be contained to the bottom of

instrument.

(7) The output display lamp (HV lamp) serves functions as warning of outer loading voltage

and or as confirming electric discharge with superior safety and wide functionality.

(8) Data hold function enables measurements in any field & attitude.

DIGITAL INSULATION TESTER FOR

PHOTOVOLTAIC SYSTEMS

WITH 4 RANGES

Model

INSTRUCTION MANUAL

MULTI MEASURING INSTRUMENTS CO.,LTD.

Akihabara Murai Bldg. 7F, 1 -26 Kanda Sakuma-cho,

Chiyoda-ku, Tokyo 101-0025, JAPAN

TEL: +81-3-3251-7013

FAX: +81-3-3253-4278

Website: http://www.multimic.com/

Email: [email protected]

1. Before use

1.1 Safety Symbol

To use this instrument safely, the following symbols and contents are displayed on

instrument body and instruction manual.

1.2 Caution for Operation

! Do not drop and or throw the instrument at hard objects.

! Do not store the instrument at the places with high temperature more than 60

low temperature less than -20

C and high humidity and also, avoid the direct rays of sun.

! Do not apply chemicals like as thinner, acetone, etc. for cleaning.

! Confirm the specifications/ratings in this manual and use the instrument within the rated values,

1.3 Confirm the Accessories

After opened the box, check the appearance of instrument and confirm the accessories are contained.

2. Specifications

2.1 Insulation Resistance Measurement

1) Rating

Range Rated Measuring Voltage Max. Effective Display Value Center Display Value

125V 125V 20MΩ0.5MΩ

250V 250V 50MΩ1MΩ

PVL 500V 100MΩ2MΩ

PVH 1000V 2000MΩ50MΩ

Showing careful operation. This symbol is displayed at the point where

the references to instruction manual are required to protect operator &

equipment.

Showing the high voltage output more than 1000V.

Touch to the terminal is dangerous.

WARNING: Indicating the matters to be attended to avoid electrical shock and

accidents which may affect danger to operator’s life and body.

CAUTION: Indicating the matters to be attended to avoid damage of equipment

and for general points of operation.

2) Accuracy

3) Rated Measuring Current

4)No-loading Voltage : less than 130% of rated voltage

5)Short-circuit Current : less than 2mA

6)Influence of Temperature : less than ±5%rdg at the center display by changing ambient temperature from 20oC to

±20oC.

7)Response Time : less than 10sec.(auto range), except that the measuring values fluctuate according to

capacitance volume to the ground.

8)Protection of Mis-input : nothing wrong when applying 120% of rated measuring voltage AC with nearby 50Hz

or 60Hz sine wave for 10sec.

9)Display Range : 3.200/32.00/320.0/3200 (auto range)

10)Min. Resolution : 0.001MΩ

11)A/D Conversion : dual integration mode

12)Display : max. 3200 count LCD with bar graph & annunciator

13)Over Range : “OL” mark on display

Range Rated Measuring Voltage/

Max. Effective Display Value Measuring Range Accuracy

125V 125V/20MΩ

[First Effective Range]

0.02MΩ~10MΩ

[Second Effective Range]

0.01MΩ~0.02MΩ

10MΩ~20MΩ

20MΩ~100MΩ

less than ±5%

less than ±10%

less than ±30%

250V 250V/50MΩ

[First Effective Range]

0.05MΩ~20MΩ

[Second Effective Range]

0.02MΩ~0.05MΩ

20MΩ~50MΩ

50MΩ~100MΩ

less than ±5%

less than ±10%

less than ±30%

PVL

(500v) 500V/100MΩ

[First Effective Range]

0.1MΩ~50MΩ

[Second Effective Range]

0.05MΩ~0.1MΩ

50MΩ~100MΩ

less than ±5%

less than ±10%

PVH

(1000V) 1000V/2000MΩ

[First Effective Range]

2MΩ~1000MΩ

[Second Effective Range]

1MΩ~2MΩ

1000MΩ~2000MΩ

less than ±5%

less than ±10%

Range/Rated Voltage Min. Measuring Resistance enables

to keep rated voltage Rated Measuring Current

125V 12MΩ0.0105mA (-0%~+20%)

250V 12MΩ0.0209mA (-0%~+20%)

PVL (500V) 12MΩ0.0417mA (-0%~+20%)

PVH (1000V) 12MΩ0.0834mA (-0%~+20%)

14)Low Battery Indication : “ ” mark on display.

15)Data Hold : “DH” mark on display

16)Auto Power Off Function : automatically power off approx. 10 minutes after power on (to release this funciton,

set the rotary switch to “OFF” and power on again.)

17)Load Discharge Function : Discharging DC electrical change by auto discharge function. Can confirm discharge

by HC lamp off.

18)Back Light Function : By pressing backlight switch (LIGHT) once, back light appears and by pressing switch

again. It lights off. It will become automatically approx. 10 minutes after light on.

2.2 AC Voltage Measurement (ACV)

1) Measuring Method : Average value display

2) Measuring Range : AC 0V~600V (min. resolution 0.1V)

3) Accuracy : ±1.5%rdg±10dgt

2.3 General Specification

1) Operating Temperature : 0~40oC, less than 80%RH (w/o condensation)”

2) Storage Temperature : -20oC~-60oC, less than 80%RH (w/o condensation)

3) Withstanding Voltage : AC3700V/1 minute between electric circuit and outer case

4) Insulation Resistance : more than 50MΩby DC1000V insulation resistance tester

5) Power Supply : AA alkaline battery (LR)x6

6) Outer Dimension : 170(W)x105(D)x52(H)mm

7) Weight : approx. 350g (without batteries)

8) Accessories : earth test lead -1, line test lead - 1, test lead case - 1, belt - 1, battery (LR6) - 6,

instruction manual -1

9) Option : 20MΩsimulation resistor (with lead wire)

3. Operation Procedure

3.1 Name of Part & Explanation

Line Cord

EarthCord(Black)

DATA HOLD : The displayed data on LCD is held by pressing this switch during measurement of insulation

resistance and it will be released by pressing switch again.

LIGHT Switch : By pressing this switch, back light LED lightens on LCD for approx. 10 minutes. (Automatic power

saving function)

For insulation resistance measurement, the instrument is getting power-on during

pressing measuring switch. By standing up this switch, it will be locked as

power-on continuously.

Switch

Measuring Switch

Display Name Plate for

Rating

Connecto

Output

Indicator

Range Select

Switch

2) Open

the cover

Battery Cover

1) Pressing

Yellow Part

Through Hole for Belt

Cover can be installed onto

the bottom b

one touch.

<NOTE>

When setting power on in short time after switched off (or auto power off), the

power supply would not become on sometimes. In this case, once set the range

switch to off and then, power on again passing after more than 5 seconds.

3.2 Check of Residual Battery Power

1) Confirm the range switch is at insulation resistance measuring range.

2) If B mark is not lightening on LCD, the instrument can be operative.

3) If B mark is lightening during insulation resistant measurement. Judge the batteries

are almost exhausted.

4) In this case, replace all LR6 alkaline batteries with new ones.

Open the tips of test leads

5) In case of checking the residual battery power in the condition of max. power

consumption, set the range switch to PVH and check by keeping test leads shorten and

pressing measuring switch.

3.3 Battery Replacement

1) Loosen and remove the screw of battery cover by turning to the left with flat blade driver

or coin.

2) Replace the batteries, confirming (+, -) polarity according to the directions graved in

battery case.

3) In case of not using for a long time, remove all batteries, as it may cause exhaustion and

leakage of batteries.

! WARNING

1) Misapplication of battery polarity may cause leakage of battery and or damage of electric circuit

2) Do not disassemble batteries and do not throw them into the fire by no means as it is very dangerous.

3) Leaving batteries with wrong polarity setting may cause exhaustion and heating of batteries and they will be

damaged. Such batteries cannot be used even after correct setting.

4) Dispose the used batteries to the indicated place according to the species.

! CAUTION

The voltage of almost exhausted batteries is unstable according to

measuring conditions. Prepare for battery replacement when B mark

lightens even once during measurements.

! WARNING

In case of checking B under power-on of MEASURE switch at

insulation resistance range, be careful that the measuring voltage is

output.

Do not switch on, at

resistance measuring

range

3.4 Insulation Resistance Measurement (In PV System)

1) Confirm the measuring switch

MEASURE is off.

2) Set the range switch according to

the generated voltage. PVL is for

500V and PVH is for 1000V.

3) Disconnect solar panel (PV) from

power conditioner (PCS) at the

disconnecting switch.

4) Connect EARTH lead of MIS-PV2 with the earth terminal of PV system.

5) Contact LINE probe to P terminal of solar panel (at disconnector) and power on

MEASURE switch. (Operate the instrument with MEASURE switch standing up, as it takes

a long time for the measurement. By standing up the switch, it will be locked and will get

power-on continuously).

After switched on MEASURE switch, the bar graph on LCD is lightening step by step and

the measured value will be displayed after all bar graph lightened and the first measurement

finished. The first displayed value will be kept until finishing the second display. By pressing

data hold switch once, the display will be hold and will be released by pressing switch again.

6) After finished the measurement, set MEASURE switch off and rotary range switch to off.

Power

Conditioner

Module Cell Bypass Diode

Disconnector

Solar Panel

String

Range Switch

LCD

! WARNING

For insulation resistance measurement in PV systems, be sufficiently careful for electrical

shock, as solar panels are generating powers successively with voltage.

! CAUTION FOR MEASUREMENT

It takes longer time for measurement according to CR time constant, as there are

capacitance on solar panels.

In such case, make measurement after connected 20MΩsimulation resistor between P

phase and earth terminal and calculate correct resistance by computation, as the

measured value will show insulation resistance in parallel connection of 20MΩand

actual resistance.

3.5 Insulation Resistance Measurement (Except PV System)

1) Confirm the measuring switch MEASURE is off.

2) Set range switch according to the rated voltage to be measured.

(Reference)

In case of rated circuit voltage 100V, set the range switch to [125V].

In case of rated circuit voltage 200V, set the range switch to [250V].

In case of rated circuit voltage 400V, set the range switch to [500V].

In case of high voltage circuit equipment, set the range switch to [1000V].

In case of insulation resistance measurement at the completion examination at low

voltage circuit, set the range switch to [500V].

3) Confirm the display value is “0MΩ”, after short-circuited LINE probe and EARTH clip and

pressed measuring switch on.

4) In case that one end of the object to be measured is grounded, connect with clip at

(EARTH) end.

5) After confirmed HV lamp is not lightened by contacting (LINE) probe to the object to be

measured and pressed measuring switch on, the bar graph on LCD is lightening step by

step and the measured value will be displayed after all bar graph lightened.

3.6 AC Voltage Measurement

1) Confirm the measuring switch MEASURE is off.

Object to be measured

(Insulation Resistance) Measurement

Set ON

In case of one end of load grounded

R L

2) Set range switch to [125V] or [250V]. (By whichever range, AC 0~600V can be measured

in the same way).

3) Contact measuring probe (LINE) and clip (EARTH) to the circuit or the live part of

equipment to be measured.

4) Read the voltage value after the display got stable.

4. REPAIR SERVICE

When requesting for repair service, please bring the instrument directly to the dealer where

you bought.

When mailing the instrument, always pack it in its original or equivalent packing materials to

avoid any damage during the transportation and also put together with documents showing

your name, address, phone number and defect point.

5. WARRANTY

This instrument is sent out from our factory after the sufficient internal inspections but if you

find any defect due to the fault in our workmanship or the original parts, please contact the

dealer where you bought the instrument.

The warranty period is 12 months from the date of purchase and the instrument shall be

repaired at free of charge, provided that we judge the cause of defect is obviously resulted

from our responsibility.

Set OFF

ACV

! WARNING

1) Do not apply the voltage exceeding AC 600V to prevent electric failure and or burnout

of the instrument.

2) Do not apply voltage under the condition of measuring switch MEASURE on, as it

may cause electrical shock and or instrument damage.

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