Center 360 User manual

OFF
600V
1000V I CAT
CAT II
II
Lo V
1000V
MHi
4000
1000V
4000M
V
TEST
4000M
250V 500V
4000M
M
01000
V
2000 3000
360

CONTENTS
TITLE PAGE
I. SAFETY INFORMATION………………………………………... 1
Environment conditions………………………………………….. 1
Maintenance & Cleaning………………………………………… 1
Safety symbols…………………………………………………..…2
II. GENERAL SPECIFICATION……………………….…………... 2
III. ELECTICAL SPECIFICATION……………………………..…. 3
IV. SYMBOL DEFINITION & BUTTON LOCATION………….…4
V. MEASURING FUNCTION……………………………………... 5
1. ACV Function……………………………………………….…. 5
2. DCV Function……………………………………………….…..5
3. Low Ohm Function and Continuity Function……………..…. 5
4. MegaOhm Function………………………………………..…...5
VI. AUTO POWER OFF………………………………………….…. 6
VII. BATTERY CHANGING……………….………...……………... 7
VIII. FUSE CHANGING………………..….…………………...…... 7
AUTORANGING INSULATION TESTER

DEC.1998

AUTORANGING INSULATION TESTER

instruction manual
1
I. SAFETYINFORMATION
 Read the following safety information carefully before attempting
to operate or service the meter.
 The circuit under test must be de-energized and isolated before
connections are made except for voltage measurement.
 Circuit connections must not be touched during a test.
 After insulation test, capacitate circuits must be allowed to
discharge before disconnecting the test leads.
 To avoid damages to the instrument do not apply the signals,
which exceed the maximum limits shown in the technical
specification tables.
 Do not use the meter or test leads if they look damaged. Use
extreme caution when working around bare conductors or bus
bars.
 Use the meter only as specified in this manual; otherwise, the
protection provided by the meter may be impaired.
 Caution when working with voltages above 60V DC or 30 V AC
RMS. Such voltages pose a shock hazard.
 Before taking resistance measurements or testing acoustic
continuity, disconnect circuit from main power supply and all loads
from the circuit.
Environment conditions:
Installation Categories III 600 V
Pollution Degree 2
Altitude up to 2000 meters
Indoors use only
Relatively humidity 80% max.
Operation Temperature 0∼40℃
Maintenance & Cleaning:
Only qualified personnel should perform repairs or servicing not
covered in this manual.
Periodically wipe the case with a dry cloth. Do not use
abrasives or solvents on these instruments.

AUTORANGING INSULATION TESTER
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instruction manual
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Safety symbols:
Caution (Refer to this manual before using the meter)
Dangerous voltages, risk of electric shock.
Meter is protected throughout by double insulation.
When servicing, use only specified replacement parts.
Approvals: EN-61010-1 600V CAT III 1000V CATII
VDE 0413
II. GENERAL SPECIFICATION:
 Display:
76×42mm Big LCD Panel with 40 segments analog Bar Indication.
 Over range Indication:
“OL” will be shown on the LCD Panel when out of range
measurement is made.
 Low Battery Indication:
The will be show when the battery need to be changed.
 Sampling Rate:
2.5 times/sec Digital Display; 10 times/sec Bar Graph
 Power Source:
1.5V AA size Battery ×8
 Operating Temperature and Humidity:
0℃to 40℃(32℉to 104℉), bellow 80% RH
 Storage Temperature:
-10℃to 60℃( 14℉to 140℉)
 Dimension:
196(L)×112(W)×64(H)mm ; 7.72(L) × 4.41(W) × 2.52(H)inch
 Weight:
Approx. 700g(with battery)
 Accessories:
Test Lead, Large Jaw Alligator Clips, Battery, Instruction Manual,
Carry Case.

AUTORANGING INSULATION TESTER
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instruction manual
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III. ELECTRICAL SPECIFICATION:
 AC Voltage
Range Resolution Accuracy
600V 0.1V 1.5%rdg+5dgts
 DC Voltage
Range Resolution Accuracy
600V 0.1V 1%rdg+3dgts
 ΩOhms ( Autoranging )
Range Resolution Accuracy
400Ω0.1Ω
4000Ω1Ω1%rdg+5dgts

Continuity beeper
Range Active Protection
≦40Ω600Vrms
 MΩ( Autoranging )
Range Resolution Accuracy
4/40/400/4000MΩ( 250V)
4/40/400/4000MΩ( 500V)
4/40/400/4000MΩ( 1000V) 1KΩ3%rdg+5dgts < 2GΩ
5%rdg+5dgts < 4GΩ
PowerConsumption Battery = 9.5 V
Range Condition mA (approx.)
ACV 16mA
DCV 16mA
Ω∞22mA
Ω0Ω190mA
250V ∞50mA
250V 250K 120mA
500V ∞60mA
500V 500K 150mA
1000V ∞85mA
1000V 1M 220mA
MΩStand by 16mA

AUTORANGING INSULATION TESTER
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instruction manual
4

HiLo
OFF
V
1000V
600V I
V
4000M
250V 4000M
500V
1000V
4000M
IICAT
1000V CAT II
V
M
TEST
42000 63000 84000210000
PLEASE READ MANUAL FOR SAFETY
WARNING
1000V CAT II
600V CAT III
IEC 1010
TO AVOID ELECTRICAL SHOCK
OPENING CASE
SIZE AA 1.5VX8
REMOVE TEST LEADS BEFORE
F 0.5A 600V
M
1
2
3
6
5
4
8
7
42000 63000 84000210000
IV. Symbol Definition and Button Location
LCD Display TEST Button
Function Selector Power Lock Button
Data Hold Button Hi Input Terminal
Lo Input Terminal Battery Compartment Cover
Low Battery
High Voltage Output Lock Enable
Data Hold
Continuity Beeper Enable
Analog Bar Scale
Analog Bar Display
Measuring unit
Digital Readout
Dangerous Voltage

AUTORANGING INSULATION TESTER
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instruction manual
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V. MEASURING FUNCTIONS
1. ACV Function:
Turn function selector to voltage range. Connect black test lead to
Lo terminal and red one to the Hi terminal. Connect test lead to the
test circuit in parallel. One can hold the reading by pressing the
HOLD key.
2. DCV Function:
Turn function selector to voltage range. Connect black test lead to
Lo terminal and red one to the Hi terminal. Press the TEST button
to change the mode form ACV to DCV function. Connect test lead
to the test circuit in parallel. One can hold the reading by pressing
the HOLD key.
3. Low Ohm Function and Continuity Function:
Turn function selector to Ohm range. Connect black test lead to Lo
terminal and red one to the Hi terminal. Connect test lead to the
test circuit in parallel. If the reading is less than 40 Ohm, the
continuity beeper will sound.
One may null the lead resistance (under 40 Ohm) by shorting the
test lead than press the test key. When the lead resistance is
recorded a ZERO symbol will display on the LCD. Press TEST key
again to go back to normal operation. If the lead resistance is
great than 40Ω, the “ Err ” error message will show on the display.
Because the test current provided by the meter could reach
200mA, do not use this range to test electronic component like
diode, transistor or fuse.
4. MegaOhm Function:
Turn the function selector to the desired test voltage range. The
LCD will display “----” to indicate the tester is standing by. Connect
black test lead to Lo terminal and red one to the Hi terminal.
Connect test lead to the test circuit in parallel. One may take the
measuring under manual power mode or power lock mode:

AUTORANGING INSULATION TESTER
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 Manual Mode: Press and hold the test key to active the test
voltage source. A periodic beeping will warn the high voltage
output. Release the test button to stop the test voltage output. A
series of beeping with shorter period indicate the discharging in
progress. When the beeper stops, the discharge is completed. The
test result will be held on the display automatically.
 Lock Mode: Press the LOCK button to enter the Power Lock
operation mode. Press the test button once to activate the test
source. A periodic beeping will warn the high voltage output. Press
the test button again to stop the test voltage output. A series of
beeping with shorter period indicate the discharging in progress.
When the beeper stops, the discharge is completed. The test
result will be held on the display automatically. If test period extend
longer that 3-minute the test source will shot down automatically.
Caution:
Do not activate the test before the lead is connected to the test
circuit properly.
Do not remove the test lead from the test circuit before the
discharge process is completed.
VI. AUTO POWER OFF
When the tester is idle for thirty minutes, with no function selector
or button operation, it will turn itself off automatically. To turn the
tester on again, the user has to turn the function selector to “OFF”
position, then the selected function.

AUTORANGING INSULATION TESTER
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instruction manual
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VII. BATTERY CHANGING
When appear on the LCD, the battery need to be replaced with
new ones. To replace the battery the user should turn the function
selector to OFF position. Then the user needs to open the battery
compartment cover with a screwdriver. Eight AA 1.5V batteries are
needed to replace the old ones. After all Batteries are changed,
put the cover back and fasten the screw.
VIII. FUSE CHANGING:
When connect the meter under Ohm rang to a source > 10V, the
protection fuse will break the circuit and new one will be needed
for replacement. To replace the fuse, user should prepare an F
0.5A 600V fuse. First, the user should turn the test off and remove
the test leads then remove the Beck Cover and Replace the fuse.

CENTER TECHNOLOGY CORP.
4 / F NO. 415, Jung-Jeng Rd., 238 Shu-Lin Chien, Taipei, Taiwan
TEL : [phone] E-Mail : [email protected]
FAX : [phone] http : / / www.centertek.com
360 -01