380385 [EXTECH]

10KV Digital High Voltage Insulation Tester; 10KV数字高压绝缘电阻测试仪
380385
元器件型号: 380385
生产厂家: EXTECH INSTRUMENTS CORPORATION.    EXTECH INSTRUMENTS CORPORATION.
描述和应用:

10KV Digital High Voltage Insulation Tester
10KV数字高压绝缘电阻测试仪

测试高压
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User's Manual
10KV Digital High Voltage Insulation Tester
Model 380385
Warranty
EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects
in parts and workmanship for one year from date of shipment (a six month limited
warranty applies on sensors and cables). If it should become necessary to return the
instrument for service during or beyond the warranty period, contact the Customer
Service Department at (781) 890-7440 ext. 210 for authorization or visit our website at
www.extech.com (click on Contact Extech and go to Service Department to request an
RA number). A Return Authorization (RA) number must be issued before any product is
returned to Extech. The sender is responsible for shipping charges, freight, insurance
and proper packaging to prevent damage in transit. This warranty does not apply to
defects resulting from action of the user such as misuse, improper wiring, operation
outside of specification, improper maintenance or repair, or unauthorized modification.
Extech specifically disclaims any implied warranties or merchantability or fitness for a
specific purpose and will not be liable for any direct, indirect, incidental or consequential
damages. Extech's total liability is limited to repair or replacement of the product. The
warranty set forth above is inclusive and no other warranty, whether written or oral, is
expressed or implied.
Introduction
Congratulations on your purchase of the Extech High Voltage Insulation Tester. This
device has four pre-set voltage test ranges (up to 10kV) and measures insulation
resistance to 500GΩ. Other voltage test values can be selected using the ±500V step
buttons. This professional meter, with proper care, will provide years of safe reliable
service.
Safety
1.
2.
3.
4.
5.
6.
Circuits under test must be de-energized and isolated before connections are made.
Circuit connections must not be touched during a test.
After insulation tests, capacitors must be discharged.
Test leads (including alligator clips) must be in good working order, clean and without
broken or cracked insulation.
When servicing, use only specified replacement parts.
Environmental conditions:
Indoor use only; Installation category III 300V
Pollution degree 2
Altitude up to 2000 meters
Relative Humidity 80% max.; Temperature 0 to 40 C
o
International Safety Symbols
Caution, refer to this manual before using this meter
Dangerous Voltages; risk of electric shock
Meter is protected throughout by double or reinforced insulation
2
380385 V1.5 3/04
Specifications
General specifications
Display
Range selection
Bargraph
Automatic discharge
Low battery indicator
Power source
Auto Power off
Enersave
TM
2 x 20 character alphanumeric multi-function dot matrix
20 ranges in 500V steps with automatic ranging.
Preset buttons for 1KV, 2.5KV, 5KV, and 10KV
Displays voltage ramp, soak, and decay
After automatic & manual stop or upon completion of test
"Replace battery" displayed when battery voltage is low
Eight 1.5V ‘C’ cells; Battery life 40 hrs (no load at 10kV)
After 5 minutes of inactivity
Shorter test time to conserve battery life
Supplied. RED (length = 108”) with GREEN guard lead.
BLACK lead is 42”.
32 to 104 F (0 to 40 C); < 80% RH
14 to 140 F (-10 to 60 C); < 80% RH
13 x 10.2 x 6.3” (330 x 260 x 160mm)
7.9 lbs (3.6kg)
o
o
o
o
mode
Test Leads
Operating conditions
Storage conditions
Dimensions
Weight
Range Specifications
DC Test
Voltages
0.5KV
1KV
1.5KV
2KV
2.5KV
3KV
3.5KV
4KV
4.5KV
5KV
5.5KV
6KV
6.5KV
7KV
7.5V
8KV
8.5KV
9KV
9.5KV
10KV
Resistance
Ranges (in GΩ)
25
50
75
100
125
150
175
200
225
250
275
300
325
350
375
400
425
450
475
500
Short Circuit
Current
100mA
Accuracy
Resolution
120mA
± (3% + 2d)
1MΩ
170mA
360mA
Note: Voltage Regulation is +20% -5% unless current limited.
3
380385 V1.5 3/04
Meter Description
1.
2.
3.
4.
5.
Test lead jacks
Dot Matrix Display
Keypad
Battery compartment (on bottom)
Test lead compartment latch
2
3
4
5
1
Preparation
Warning:
Ensure that the circuit under test does not include devices or components that
can be damaged by 10KVDC; such devices include power factor correction capacitors, low
voltage mineral insulated cables, electronic light dimmers, ballasts and starters for
fluorescent lamps.
Connecting the Test Leads to the meter
The
Black (Earth), Red (Line),
and
Green (Guard)
test leads connect to the meter
directly above the dot matrix display (the meter jacks are color coded). NOTE: The
Green
(Guard)
lead is attached to the Red lead and should be used (refer to applications section
next).
Connecting the Test Leads to the device under test
The
Black (Earth)
lead is connected to the conductive material. The
Red (Line)
and
Green (Guard)
leads are connected to insulating, sheathing, and covering material as
shown in the following applications section.
4
380385 V1.5 3/04
Operation
Powering the meter
Press the
ON
button to turn the unit on. Press the
OFF
button to turn the unit off.
Insulation Resistance Measurements
Warning:
The circuit under test must be completely de-energized and isolated before
making test connections.
1. After turning the unit on, the display will prompt the user
to select a test voltage (diagram at right).
Select Voltage:
250000MΩ V = 5000V
2. Select the test voltage by pressing one of the preset
voltage buttons (1KV,
2.5KV, 5KV, 10KV)
or by pressing the Voltage Adjust buttons
(500+,
500-)
to step through the available test voltages in 500V steps.
3. The resistance range for the selected voltage is indicated on the dot matrix display as
shown above.
4. Press the
TEST START / STOP
button again.
5. The display will prompt the user to connect the leads.
Press the
TEST START/STOP
button to start testing.
Connect Leads . . . .
. . . . . . Press TEST
6. The elapsed test time appears on the upper line (right
hand side) of the display. The resistance reading is shown on the upper left hand side
of the display. The lower line shows the test voltage in bargraph format (see diagram
at right).
R=9.998MΩ
6.8s
7. The HOLD icon will appear in place of the bargraph
0>
█ █ █ █ █ █
<500V
when the test is complete and the voltage has been
discharged.
WARNING:
DO NOT REMOVE THE TEST LEADS BEFORE THE HOLD DISPLAY
APPEARS.
8. The meter automatically discharges the system at the end of the test.
9. The meter automatically powers down after 5 minutes.
The Enersave
TM
TM
Mode
Enersave mode conserves battery life by performing a relatively short test (10 seconds).
TM
The Enersave mode is the default test mode. To bypass this mode and run a longer test
(100 seconds max), press and hold the
TEST
button for 3 seconds when starting a test.
Bargraph Voltage Display
The bargraph represents the voltage present on the test leads as it rises, soaks, and
decays. The bargraph appears on the lower left of the dot matrix display during a test.
Automatic Under/Over Range Resistance Detect
If the display shows the message “LOW MΩ”, the test should be interrupted immediately
by pressing the
TEST
button. This message indicates that the insulation under test has
broken down and the meter is trying to inject a high potential onto a short circuit. If ‘HIGH’
appears, it is likely that the test configuration is open. Check the test set-up then test
again.
Elapsed Timer
The test duration is indicated on the display. This is particularly useful in determining
whether an insulating material under test will break down in a given amount of time.
5
380385 V1.5 3/04
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