Isotech IIT 1500 Bedienungsanleitung
EN50419: 2006
Instruction Manual
IIT 1500
Insulation tester
IIT 1500
LPF
OFF
RECALL
COMP STORE LOCK
PASS
PI/DAR
TEST
FUSED
V
!
INSULATION> 660V
COM
CAT IV
600 V
!
500V
1000V
250V50V
0
TEST
100Gk
10Gk
100k
0
10M
100kM
100M
COMPARE 100 200
500 KM
PI DAR
MEM APO LPFLOCKAUTO SENSE
+
AC
DC
AC
DC
K M Ω
G
µ m A
0
100V
L
e
a
k
a
g
e
C
u
r
r
e
n
t
M
2
IIT 1500 English
Safety Information
Introduction
Specications
Operation
Battery and Fuse Replacement
Mantenance
3
IIT 1500 English
SECTION 1 - SAFETY INFORMATION
Safety Information
Read and understand this instruction manual completely before using this
instrument. Failure to observe the warnings and cautions in this instruction
manual may result in injury, death or damage to the instrument and other
equipment or property.
If this instrument is used in a manner not specied in these instructions,
the protection provided by the instrument may be impaired.
Warning
Identies hazardous conditions and actions that could cause BODILY HARM
or DEATH.
Caution
Identies conditions and actions that could DAMAGE the tester or equipment
under test.
WARNING
• Examine the instrument and probes before use. Do not use the instrument if
it is wet or damaged
• When using test leads or probes, keep your ngers behind the
nger guards
• Remove test leads from instrument before opening the battery door or
instrument case
• Use the instrument only as specied in this manual or the protection by the
instrument might be impaired
• Always use proper terminals, switch position, and range
for measurements
• Verify the instrument is operating correctly by measuring a known voltage
before use. If in doubt, have the instrument calibrated
• Do not apply more than the rated voltage, as marked on instrument, between
terminals or between any terminal and earth ground
• Only replace the blown fuse with the correct type and rating as specied in
this manual
• Use caution with voltages above 30 Vac rms, 42 Vac peak , or 60 Vdc. These
voltages pose a shock hazard
• To avoid false readings that can lead to electric shock and injury, replace
battery as soon as low battery indicator “<” appears
• Disconnect circuit power and discharge all high-voltage capacitors before
making resistance measurements
• Do not use the instrument in hazardous areas or around explosive gases or
vapours
• Wear suitable personal protective equipment when working around or near
hazardous live conductors which could be accessible.
4
IIT 1500 English
CAUTION
• Disconnect the test leads from the test points before changing the position of
the function rotary switch
• Never connect a source of voltage with the function rotary switch in the Ω,
50V,100V,250V, 500V or 1000V position
• Do not expose the instrument to extremes in temperature or high humidity
• Never set the instrument in Ω, 50V,100V, 250V, 500V or1000V function to
measure the voltage of a circuit. This could result in damage to the tester and
the equipment under test.
Symbols as marked on the instrument and instructions leaet
Unsafe Voltage
To alert you to the presence of a potentially hazardous voltage, when the
instrument detects a voltage ≥2 V in resistance mode, ≥30 V in insulation test,
or a voltage overload (OL), the ” “ symbol is displayed and the High Voltage
indicator is turned on. In this condition the test is inhibited.
Risk of electric shock
See instruction leaet
DC measurement
Equipment protected by double or reinforced insulation
Battery
Fuse
Earth
AC measurement
Conforms to EU directives
Dispose of in accordance with local regulations
+
5
IIT 1500 English
SECTION 2 - INTRODUCTION
Unpacking and Inspection
Unpack the instrument and check the contents for damage. If any items are
damaged or missing, contact the supplier.
The instrument is supplied with the following items:
1. The insulation tester
2. One pair of test-leads (one red lead and one black lead)
3. This instruction manual
4. One pair of crocodile-clips
(One red clip and one black clip)
5. Remote test probe
6. Protective rubber holster
7. Tester hanging kit
8. Batteries
Instrument Description
Front Panel Illustration
1. LCD display: 4000 counts
2. Push-buttons for features
3. Rotary switch to turn the Power On or Off and to select a function
4. Input terminal for Ω function
5. Common (Ground reference) Input terminal for all functions.
6. Input terminal for voltage measurement & insulation test functions
LPF
OFF
RECALL
COMP STORE LOCK
PASS
PI/DAR
TEST
FUSED
V
!
INSULATION> 660V
COM
CAT IV
600 V
!
TEST
100Gk
10Gk
100k
0
10M
100kM
100M
COMPARE 100 200
500 KM
PI DAR
MEM APO LPFLOCKAUTO SENSE
+
AC
DC
AC
DC
K M Ω
G
µ m A
0
Display
Features
Pass Indicator
High Voltage Indicator
Functions & Power On/Off
Ω Input
Common Input
V insulation Input
1
2
3
4
5
6
6
IIT 1500 English
SECTION 3 - SPECIFICATIONS
General Specications
Maximum voltage applied to any terminal: 600 V ac rms or dc.
Display: 4000 counts.
Polarity Indication: Automatic, positive implied, negative indicated.
Overrange Indication: OL
Batteries Life (new batteries at room temperature):
Resistance Measurements: Minimum of 2600 earth-bond resistance
measurements: standard tests of 1Ω with a duty cycle of 5 seconds on and 25
seconds off.
Insulation test: M inimum of 1100 insulation tests: standard tests of 1 MΩ at
1000 V with a duty cycle of 5 seconds on and 25 seconds off.
Low Batteries Indication: “<” is displayed when the batteries voltage drops
below operating voltage.
Low battery voltage: Approx. 4.5V
Auto Power Off: Approx 20 minutes.
Operating Ambient Temperature:
≤10°C Non-condensing
11°C ~ 30°C (≤ 80% RH)
30°C ~ 40°C (≤ 75% RH)
40°C ~ 50°C (≤ 45%RH)
Storage Temperature: -20°C to 60°C, 0 to 80% RH (batteries not tted)
Temperature Coefcient: 0.15 x (Spec.Accy)/°C, < 18°C or > 28°C .
Measurement Rate: Samples 2 times per second nominal.
Maximum Altitude: 2000 metres
Installation Category: Complies with EN61010-1, UL61010-1,
IEC 61010-1: CAT IV 600V
Pollution degree: 2
7
IIT 1500 English
Category denitions
Compliance to EN 61557: IEC61557-1, IEC61557-2, IEC61557-4, IEC61557-10
Weight: 630g including battery.
Dimensions (W x H x D): 95mm x207mm x 52mm with holster.
Power requirements: 1.5V x 4 IEC LR6 or AA size.
EMC: EN 61326-1
Shock vibration: Sinusoidal vibration per MIL-T- 28800E
(5 ~ 55 Hz, 3g maximum).
Drop protection: 1 metre drop to hardwood on concrete oor.
Indoor use only
Measurement
Category
Application
IMeasurements on circuits not directly connected to mains. Examples
include: measurements on battery powered equipment and specially
protected (internal) mains-derived circuits.
II Measurements on circuits directly connected to the low voltage installa-
tion. Examples include: household appliances, portable tools and similar
equipment.
III Measurements performed in the building installation. Examples include:
measurements on distribution boards, junction boxes, socket-outlets and
wiring and cables in the xed installation.
IV Measurements performed at the source of the low-voltage
installation. Examples include: measurements on primary overcurrent
protection devices and electricity meters
8
IIT 1500 English
Voltage Measurement
Function Range Accuracy
DCV 600.0V ±(1%+5dgt)
ACV 600.0V ±(1.5%+5dgt) (50~60Hz)
±(2%+5dgt) (61~500Hz)
LPF ACV 600.0V ±(1.5%+5dgt) (50~60Hz)
±(5%+5dgt) (61~400Hz)
Start measuring voltage: ≥ AC 0.6V.
Over voltage protection:
600V rms or dc.
Low pass lter cut-off frequency: 1 kHz.
Input Impedance:
3MΩ // < 100pF.
CMRR / NMRR:
(Common Mode Rejection Ratio)
(Normal Mode Rejection Ratio)
VAC:
CMRR > 60dB at DC, 50Hz / 60Hz
VDC:
CMRR > 100dB at DC, 50Hz / 60Hz
NMRR > 50dB at DC, 50Hz / 60Hz
AC Conversion Type:
AC conversions are ac-coupled, true rms responding, calibrated to the sine
wave input.
Non-sine wave Crest
Factor corrections:
For Crest Factor of 1.4 to 2.0, add 1.0% to accuracy.
For Crest Factor of 2.0 to 2.5, add 2.5% to accuracy.
For Crest Factor of 2.5 to 3.0, add 4.0% to accuracy.
Maximum permissible
Crest Factor:
3 @ 330V; 2 @ 500V
9
IIT 1500 English
*<1.00Ω add 3 digits
Function Range Accuracy
Resistance /
Continuity
40.00Ω ±(1.5%+5dgt)*
400.0Ω
4000Ω
40.00kΩ
±(1.5%+3dgt)
Resistance / Continuity Measurement
Insulation Resistance Measurement
Function Range Accuracy *
Insulation
Resistance
4.000MΩ
40.00MΩ ±(1.5%+5dgt)
400.0MΩ
4000MΩ ±(3%+5dgt)
4.1GΩ~20.0GΩ ±(10%+3dgt)
* Above specications only apply when high quality silicone leads with test clips
are being used with no hands touching.
Test Voltage vs. Maximum resistance range:
50V/50.0MΩ, 100V/100.0MΩ, 250V/250.0MΩ, 500V/500MΩ and 1000V/20.0GΩ.
Test Voltage vs. Minimum resistance (with test current = 1mA):
50V/50kΩ, 100V/100kΩ, 250V/250kΩ, 500V/500kΩ and 1000V/1MΩ.
Test Voltage Accuracy: -0%,+20%
Short Circuit Test Current: 1mA (nominal)
Auto discharge function: discharge time <1 sec for C≤1µF
Maximum Capacitive load: 1µF
Live Circuit Detection: if ≥30V ac/dc at inputs, test inhibited
Open Circuit Test Voltage: >4.0V,<8V
Short Circuit Current: >200.0mA
Live Circuit Detection: if ≥2V ac/dc at inputs, test inhibited
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