Kyoritsu 1710 User Manual download pdf (Page 2)

4. Preparation for measurement

4.1 Auto-power-on / Self-diagnostic test

●Auto-power-on

►Short-circuiting the probes as follows powers

on the instrument automatically and goes into

a Self-diagnostic test.

Instrument may power on;

* when replacing Tips, or

* due to the influence of static charge.

●Self-diagnostic test

WARNING

Do not use the instrument when abnormality

is found at Self-diagnostic test.

►Battery voltage is normal when Power LED is

lighting up.

When the battery voltage is below 2.4±0.1V,

Power LED flashes or goes off.

Replace batteries according to Clause 7.

►LEDs other than the Power LED should be

flashing and buzzer should sound continuously.

●Auto-power off

►Instrument is automatically powered off after

15 sec when nothing is contacted with the

probes. (Power LED goes off.)

Auto-power off may not operate;

* when replacing Tips, or

* when a significant electric magnetic field exists

in the vicinity.

4.2 Trouble-shooting

If the following problems occur, unlock the

Battery Case according to clause 7 in this manual,

and then lock it again 5 seconds later.

Then perform the self- diagnostic test (clause 4.1).

* Self- diagnostic test cannot be performed

before/after use of the instrument.

* Auto-power off doesn’t operate.

5. Handy construction

Diameter of Tip and pitch between Tips are

changeable by user.

WARNING

Remove the probes from the measurement

point when replacing Tips or changing

pitches.

5.1 Tip Replacement

►Following shows how to install 4mm Tips on

L1 probe – and L2 probe +.

►Firmly tighten up the 4mm Tips.

5.2 Pitch between two probes

►Pitch between 2 Tips can be 16.7mm or 19.0mm

when rotating L1 probe – by 180 degrees and

sliding in the hooks on L2 probe +.

6. Measurement

WARNING

●Carefully check Clause 2 as well.

●Self-diagnostic test should be done prior to

measurements and confirm LED and

Buzzer works properly.

●Verify proper operation on a known source

before and after use.

●Keep your hand and fingers behind the

barriers on the probes during

measurements.

●Due to the high internal resistance (approx.

300kΩ), the capacitive and inductive

voltages may be indicated.

6.1 Voltage test (Double-pole test)

►Connect both probes to the object under test.

►The voltage is indicated

by LEDs and LCD (only

KEW1710).

Buzzer sounds when a

threshold voltage of 50V

LED is exceeded.

Live circuit LED lights up :

> 0.3V AC

> 7V DC

►Voltage polarity is indicated in following

manner.

AC +DC -DC

NOTE

●This instrument can make measurements

between L-PE without tripping RCDs.

●When the L2 probe + is the positive (negative)

potential, the Polarity indication LED indicates

“+DC” (“-DC”).

●L/R LED may light up.

6.2 Double-pole test without batteries

WARNING

Verification of live-circuit shouldn’t be

dependent on Double-pole test without

batteries only, but also on the test WITH

BATTERIES. (See Clause 6.1).

Only Live circuit LED flashes when Double-pole

test is carried out without batteries.

LED flashes: AC/DCV > approx. 40V

Flashing Duty: < 3s (40…100V)

< 0.3s (100…690V)

6.3 Single-pole phase test

WARNING

●Carefully handle L1 probe – when it is not

in use.

●Function of this test may not be fully

achieved if the insulation condition of user

or of the equipment under test isn’t

enough.

Verification of live-circuit shouldn’t be

dependent on this Single-pole phase test

only, but also on the Double-pole test.

(See Clause 6.1.)

►Grasp the instrument firmly and connect the L2

probe + to the object under test.

►Live circuit LED lights up and buzzer sounds

when a voltage of approx. 100V AC or more

exists in the object under test. (Pol≥100VAC)

Grasp Firmly!!!

19mm16.7mm

unscrew

Tighten

1 2 3

KEW 1700 / 1710 1
Grasp Firmly!!! 2

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Kyoritsu 1710 User Manual Page 2

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