MULTI MEASURING INSTRUMENTS MSEI-100C Manuel utilisateur

INSULATION RESISTANCE TESTER FOR

PHOTOVOLTAIC SYSTEMS

MSEI-100C

INSTRUCTION MANUAL

Thank you for your purchasing our model MSEI-100C

INSULATION RESISTANCE TESTER FOR DC CURRENT

CIRCUIT OF PHOTOVOLTAIC SYSTEMS.

Before use the instrument, read this instruction manual

thoroughly and operate it correctly.

Keep this instruction manual carefully to take out whenever

you need.

MULTI MEASURING INSTRUMENT 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

E-mail: multi@multimic.com

- 2 -

SAFETY SUMMARY

observe by all means

● To use this instrument safely, read this "SAFETY SUMMARY" carefully and apply the

instrument correctly.

● The CAUTIONs and WARNINGs which appear on the following pages are stated

to prevent the operator & other people from the dangers and their properties from the

damages beforehand.

△

！

WARNING : This symbol indicates the contents "Possibilities of the death or

the serious wound can be supposed" caused from mis-operations.

△

！

CAUTION : This symbol indicates the contents "Possibilities of the injury or

only the material damage can be supposed" caused from mis-

operations.

○ OPERATION ENVIRONMENT

△

！

CAUTION

● Do not use or storage this instrument under the condition of direct rays of the sun,

high temperature & humidity and or condensation, as it may cause the

deformation and or the isolation defect of the instrument.

● Do not use this instrument in the environment influenced by acids, alkalis, organic

solutions, corrosive gas, etc.

● Do not use or storage this instrument where the mechanical vibration can be directly

transmitted, as it may cause defect of the instrument.

●

Do not use this instrument nearby the appliances which generate strong magnetic

field and or electric field, as it may cause mis-movement of the instrument.

●

This instrument does not have the water/dust-proof structure. Do not use this

instrument in the environment with a lot of dust and drops of water, as it may cause

defect of the instrument.

○ OPERATION CONDITION & CONNECTION

△

！

WARNING

POSSIBLE ELECTRICAL SHOCK

● This instrument is for the use of low voltage circuit.

●

Do not make measurements of power lines carrying more than AC/DC 600V. Before

use, check and confirm the voltage of circuit to be measured.

POSSIBLE ELECTRICAL SHOCK OR ACCIDENT

●

Do not handle the instrument in the rain, at humid place, with a drop of water and or

with wet hands.

- 3 -

1. GENERAL

This insulation resistance tester (MSEI-100C) can measure insulation resistance

of DC current circuit in PV systems (between PV module and power conditioner)

on the live line and can distinguish the deteriorated part between Power Phase,

Neutral Phase, P/N Phase and or PV modules.

2. BEFORE USE

After opening the package, check the appearance of instrument and

confirm if there is no lack of accessories. If any damage and or any lack has

been found, contact the dealer you bought this instrument.

《Accessories》

Voltage Input Connector（Red, Black,

and, Green）

1 set

Instruction Manual 1 pce.

Carrying Case 1 pce.

Battery (LR6) 4 pcs.

3. CONNECTION & OPERATION OF CONNECTOR CORD & ACCESSORIES

△

WARNING

△

CAUTION

Connect voltage input cords to the live lines after connected to the instrument.

Be careful that the short circuit and or electric shock accident might be caused from

slip off of the clips and touch of them between 2 lines.

Before use, check the connecting cables (including AC adaptor) about

disconnection, contact failure, breakage of coating conductor, etc. In case of finding

any unusual point after inspection, do not use these accessories.

For the safe operation

Do not drop and or give the hand shock to the instrument.

Do not put heavy material to each cable and do not modify it.

- 4 -

4. NAME OF PART & EXPLANATION

（Name of Part & Explanation）

①Battery Case : For battery installation

②AC ADP Jack : For connecting AC adaptor(option)

③Contrast Volume : For adjusting display contrast

④Left, Right, Up, Down Switch : For moving cursor on display and setting value

⑤Display (LCD) : 20 letters/characters x 4 lines LCD, for displaying

settings item for measuring condition and numeral values.

⑥Input Switch (ENT) : For inputting measurement condition or value

⑦Power Switch (POWER) : For switching ON and OFF. Automatically off in approx.

after 40 minutes

⑧Menu Switch : For returning to initial screen

⑨Insulation Resistance Lamp : For displaying judgment for insulation condition by LED

⑩Voltage Input Terminal : For connecting Red lead to P Phase, Black lead to N

Phase, and Green lead to E Phase.

190

140

⑩

②

⑦

⑧

⑤

③

①

⑥

④

⑨

- 5 -

5. OPERATION PROCEDURE

5.1 Preparation before use

1) Place the battery

1. Unscrew and slide a battery cover to remove a battery

cover(as shown at right)

2. Place the battery observing correct polarity as

indicated in the battery compartment. Use four

LR-6(AAA) batteries.

3. Install the battery cover and tighten the screws.

△

WARNING

△

CAUTION

It may cause electric shock.

Never replace the battery during a measurement.

Be sure to set back the battery cover to original position. Never make measurement

when left the battery cover opened.

It may cause malfunction.

When the instrument will not be in use for a long period, place it in storage after

removing the batteries.

Do not mix old and new batteries.

Do not use the battery not specified in the instruction.

- 6 -

2) Use AC adaptor for long time use.

1. Insert the plug of AC adaptor to the jack of

the instrument body(AC ADP).

2. Connect AC adaptor to the outlet(AC 100V).

△

WARNING

Built-in battery is supplementary for

unexpected power failure. Normally,

use AC adaptor included in the

package.

Do not input power to AC adaptor except the indication, as it may cause a fire.

Do not touch the plug with wet hands or in the condition of water drops, as it may cause

electrical shock.

Do not use AC adaptor (options) other than accessory, as it may cause damage of

instrument and or electrical accident.

- 7 -

5.2 OPERATION PROCEDURE

1) Once press POWER switch ⑦

[SEI-100C Ver.] appears on the display and

[ZERO setting] will be displayed for a few seconds

after lightening LED of display judgment.

Then, [Top Menu](initial display) will appear.

2) Connection of Test Leads (Standard Accessory)

Connect test lead(Red) to P phase, (Black) to N phase and (Green) to E of the instrument

body.

Connect alligator clip of each test lead to measuring point.

※Make off the disconnector between PV panels and power conditioner.

Modules Modules Modules

PV Systems

N Phase(－)

P Phase

(+) Red

Green

GND

Power Cond t oner

Black

D sconnector

(Top Menu)

■Measure

Operate Memory

Set Conf gurat on

In t al Screen

- 8 -

3) Display before measurement

Set the cursor to Measure and press ENT switch ⑥once.

Display will become as under:

4) Start of Measurement

Press again ENT switch ⑥and then, measurement will start.

Vrp and Vrn are measured at the point of OS by decreasing each measuring time.

・To stop the measurement on the way, press ENT switch ⑥once.

・To start the measurement again, press ENT switch ⑥once again.

・Top Menu display will appear before or during measurement in case of press MENU switch

②.

5) Display of Measurement Result

Measurement will be made at respective points by measuring time. Respective insulation

resistance values are displayed and the insulation condition lamp lightens.

(1) Good (Green) Lamp Lightening

Green lamp lightens when Rp (P phase insulation resistance), Rn (N phase insulation

resistance) & Rpn (insulation resistance between PN phase and PV modules), all are more

than 1MΩ.

Rr ： *.***kΩ 05/17

V ： ***.* V 13：38

Vrp : ***.* V 30S

Vrn : ***.* V 30S

Internal Standard Res stance→

P Phase Voltage→

Generated Voltage→

N Phase Voltage→

Present T me

Measur ng T me

Rr ： 4.966kΩ 05/17

V ： 300.0 V 13：40

Vrp : -497.1m V 0S

Vrn : ***.* V 28S LO

D splay Example of Measurement

D splay Example of Measurement Result

D splay for Low Battery

(Replace the batter es n th s case)

V ： 300.0 V 05/17

R p ： 10.00MΩ 13：43

R n : 10.00MΩ

Generated Voltage→

N Phase Insulat on Res stance→

P Phase Insulat on Res stance→

- 9 -

(2) No good (Red) Lamp Lightening

In case that the judgment is as no good, the corresponding lamp (P phase failure, N phase

failure, PN phase failure) lightens.

・To start the measurement again, press ENT switch ⑥once again,

・Top Menu display will appear before or during measurement in case of press MENU swtch

⑧.

(3) Series Panes Numbers Input (Orange) Lamp Lightening

In case that there is insulation resistance failure, [Serial Panel Number Input Lamps]

(Orange) lightens and [Set Module] is displayed on LCD. In case that the alteration for PV

module numbers requires, the change of numbers can be made by UP↑& DOWN↓switch

④. The setting limit is 2～19.

After setting, press ENT switch ⑥and the judgment result is displayed.

・In case that the judgment is good, [Good] lamp lightens.

・In case that the judgment is no good, the corresponding lamp (P Failure, N Failure, PN

Failure, Rpn Failure) lightens.

In case of Rpn Failure, Rpn lamp (Red) lightens and the failure point is displayed on LCD at

the same time.

・To start the measurement again, press ENT switch ⑥once again.

・Top Menu display will appear before and during measurement in case of press

MENU switch ⑧.

V ： 300.0 V 05/17

R p ： 0.20MΩ 13：51

R n : 0.50MΩ

Set Module ： 12

D splay Example of Measurement Result

Generated Voltage→

N Phase Insulat on Res stance→

P Phase Insulat on Res stance→

PV Module Numbers→

V ： 300.0 V 05/17

R p ： 0.96MΩ 13：57

R n : 5.02MΩ

Rpn ： 0.63MΩ PS : 6

D splay Example of Judgment Result

Generated Voltage→

N Phase Insulat on Res stance→

P Phase Insulat on Res stance→

Insulat on Res stance between Modules→ ←Module Fa lure Po nt

PS: ※※ s the number from P d rect on. In case of 1, t means nsulat on fa lure

between 1 and 2 and n case of 6, between 6 and 7.

- 10 -

5.3 FUNCTION SETTING

1) Measurement Time Setting (Set Timer)

(1) Press DOWN switch twice

at the initial display (Top Menu)

and set the cursor to Set Configration

and then, press ENT switch.

(2) Set Timer 30 sec. is displayed and

Press ENT switch.

(3) Using UP↑& DOWN↓switch ④.

Set the cursor to appropriate point and then,

Press ENT switch once.

(4) Measuring Time will be set.

2) Present Time Setting (Now Time)

(1) Press DOWN switch twice at

the initial display (Top Menu)

and set the cursor to set Configuration

and then, press ENT switch.

↓ENT Sw tch

■Set T mer 30sec

↓ENT Sw tch

(Set T mer)

30sec 600sec

■180sec 900sec

300sec

↓ENT Sw tch

■Set T mer 180sec

※Operate Memory cannot be used

↓ENT Sw tch

(Top Menu)

Measure

Operate Memory

■Set Conf gurat on

Cursor

L ghten ng→

※Operate Memory cannot be used.

Measur ng t me means the t me after the connect on of nstrument nternal standard

res stor to each phase to measure voltage between standard res stors. The sett ng

t mes are 30 sec., 180 sec., 300 sec., 600 sec., and 900 sec.

(Top Menu)

Measure

Operate Memory

■Set Conf grat on

In t al D splay

Cursor

l ghten ng→

In t al D splay

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