Kaise SK-7820 Instruction Manual

LEAKAGE CLAMP METER
INSTRUCTION MANUAL
SK-7820/7825
FOR SAFETY MEASUREMENTS!!
To prevent an electrical shock hazard to the operator and/or damage to the
instruments, read this instruction manual carefully before using the Clamp
Meter. WARNINGS with the symbol on the Clamp Meter and this
instruction manual are highly important.
Important Symbols
The symbol listed in IEC 61010-1 and ISO 3864 means "Caution
(refer to instruction manual)".
WARNING : The symbol in this manual advises the user of an
electrical shock hazard that could result in serious injury or even
death.
CAUTION : The symbol in this manual advises the user of an
electrical shock hazard that could cause injury or material damages.
WARNING
Measurement on High Power Line is very dangerous. It sometimes includes
High Surge Voltage that could cause dangerous arcs of explosive short in
the instrument and could result in serious injury to the operator. For
dangerous voltage measurement on High Power Line or High Voltage
Circuit, always keep the instrument away from your body without holding it in
your hands. Do not touch the Clamp Meter, its Test Leads, and any part of
the circuit.
INTRODUCTION
Thank you for purchasing KAISE "MODEL SK-7820/7825 LEAKAGE CLAMP
METER". To obtain the maximum performance of this instrument, read this
Instruction Manual carefully, and take safe measurement.
1. UNPACKING AND INSPECTIONS
Inspect the instrument and acessories for transport damage. If there is any
damage or missing items, ask your local dealer for replacement.
Confirm that the following items are contained in the package.
1. Leakage Clamp Meter 1 pce.
2. Test Lead (100-63) 1 set
3. Carrying Case (1020)
1 pce.
4. Batteries (1.5V LR03) 2 pcs.
5. Instruction Manual 1 pce.
2. SPECIFICATIONS
2-1. GENERAL SPECIFICATIONS
1. DISPLAY (LCD)
12mm high
a. Numerical Display : 4000 count, Maximum reading 4050,
b. Units and Symbols : ∼, −, mA, A, mV, V, Ω, kΩ, MΩ, Hz,
LPF, DIFF, DH, APO, BAT, AUTO and decimal point
2. OPERATING PRINCIPLE : Σ ⊿ conversion
3. AC MEASUREMENT : Average rectification
4. SAMPLING RATE : 2 times / second
5. RANGE SELECTION : Auto-ranging (mA / A : switch selection)
6. OVERLOAD INDICATION : "OL" indication
7. BATTERY WARNING : "BAT" indication at approx. 2.5V or less.
8. DISPLAY HOLD : Hold indicating values by DH Key
9. COMPARATOR :
a. Setting range : 1 to 99mA
b. Exceeding alert : Buzzer, vibration, and LCD blink
10. LOW PASS FILTER : Reject high frequency (cutoff frequency : approx.150Hz)
11. AUTO POWER OFF : Power turns off automatically after 15 minutes.
(cancelable)
1
12. OVERLOAD PROTECTION (50/60Hz):
a. Current : 150A rms for 1 minute (600V line)
b. Voltage : 900V AC rms for 1 minute
13. DIELECTRIC STRENGTH : 3.54kV AC rms for 1 minute (50/60Hz)
(between input terminal and case)
14. OPERATABLE TEMPERATURE & HUMIDITY : 0℃ to 40℃,
80%RH or lower in non-condensing.
15. STORAGE TEMPERATURE & HUMIDITY : -20℃ to 60℃,
70%RH or lower in non-condensing.
16. TEMPERATURE COEFFICIENT : Accuracy in 23℃±5℃×0.1 / ℃
17. SAFETY LEVEL : CE Marking approved (IEC-61010-1, CAT Ⅲ 300V,
CATⅡ600V and EMC Test passed.)
18. POWER SUPPLY : 1.5V (L)R03 (AAA) batteries ×2
19. POWER CONSUMPTION :
a. Normal : Approx. 7mA
b. During buzzer sounds : Approx. 14 mA
c. During vibrating : Approx. 80mA
20. CONTINUOUS OPERATING TIME : Approx. 100 hours (Alkaline cell),
Approx. 50 hours (Manganese cell),
※without using comparator function.
21. CONDUCTOR DIAMETER : SK-7820 : φ24mm max., SK-7825 : φ40mm max.
22. DIMENSIONS & WEIGHT :
SK-7820 : 168(H)×58(W)×27(D)mm, Approx. 170g (Including batteries)
SK-7825 : 184(H)×58(W)×27(D)mm, Approx. 180g (Including batteries)
23. ACCESSORIES : 100-63 Test Lead ×1 set, 1020 Carrying Case,
1.5V LR03 (AAA) batteries ×2, Instruction Manual
24. OPTIONAL ACCESSORIES : 880 Line Separator,
2-2. MEASUREMENT SPECIFICATIONS
(23℃±5℃、＜80％RH in non-condensing)
1. AC Current ( mA)
∼
Resolution
Range Accuracy (50/60Hz)
40.00mA ±1.0％rdg±5dgt (1.01mA∼) 0.01mA
400.0mA ±1.0％rdg±7dgt (0.10 to 1.00mA) 0.1mA
※Filter ON (50/60Hz) : add ±1.0％rdg±3dgt
Frequency Characteristic : (40∼400Hz) : add ±1.0％rdg±3dgt
2. AC Current ( A)
∼
Range Accuracy (50/60Hz) Resolution
±2.0％rdg±5dgt (1.01A ∼)
40.00A 0.01A
±2.0％rdg±7dgt (0.10 to 1.00A)
±2.0％rdg±5dgt (40.1 to 80.0A)
0.1A
100.0A
±4.0％rdg±5dgt (80.1 to 100.0A)
(50/60Hz)
※Filter ON : add ±1.0％rdg±3dgt
Frequency Characteristic : (40∼400Hz) : add ±1.0％rdg±3dgt
3. AC Voltage ( V)
∼
Range Accuracy (50/60Hz) Resolution
400.0V ±2.0％rdg±5dgt (10.1V ∼) 0.1V
600V ±2.0％rdg±7dgt (5.0 to 10.0V) 1V
※Filter ON (50/60Hz) : add ±1.0％rdg±3dgt
Frequency Characteristic : (40∼400Hz) : add ±1.0％rdg±3dgt
3. SAFETY PRECAUTIONS
Correct knowledge of electric measurements is essential to avoid unexpected
danger such as operator's injury or damage to the instrument. Read carefully and
observe the following precautions for safety measurements.
3-1. WARNINGS
WARNING 1. Checks of Body and Test Lead
Before measurement, confirm the body of this instrument and handle insulators of
the Test Lead have no cracks or any other damages. Dust, grease and moisture
must be removed.
WARNING 2. Warning for High Power Line Measurements
High Power Line (High Energy Circuits) such as Distribution Transformers, Bus
Bars and Large Motors are very dangerous. High Power Line sometimes includes
High Surge Voltage that could cause explosive short in the instrument and could
result in shock hazard. For voltage measurement of High Power Line, do not touch
Clamp Meter, its Test Leads, and any part of the circuit.
WARNING 3. Warning for High Voltage Measurements
Even for Low Energy Circuits of electric/electronic appliances, such as heating
elements, small motors, line cords and plugs, High Voltage Measurements are
very dangerous. Do not touch Clamp Meter, Test Leads, and any part of the
circuit. Generally, shock hazard could occur when the current between the circuit,
, COMP,
that involves more than 33V rms or 46.7V DC or peak, and ground goes up to
0.5mA or more.
WARNING 4. Dangerous Voltage Measurement Procedure
For dangerous voltage measurement, strictly observe the warnings below.
Do not hold Clamp Meter and test leads in your hands. Keep safety distance
●
from power source or circuit to be measured not to touch the dangerous
voltage.
Attach black and red alligator clips to test lead pins.
●
Turn off the power of the circuit to be measured when connecting test leads.
●
After measurement, before detaching alligator clips (test leads), turn the circuit
●
power off and discharge the all capacitors.
2
※Alcaline cell recommended.
In case of live-line measurement, strictly observe the warnings
below (refer to fig 2.)
Do not hold Clamp Meter in your hands. Keep safety distance from power
●
source or circuit to be measured not to touch the dangerous voltage.
Black test lead : Attach black alligator clip and connect to − (earth) side of the
●
circuit.
Red test lead : Hold with one hand and connect to + (positive) side of the
●
circuit.
940 Alligator Clip
Average Rectification
Max.Input
Overload Protection
Current
150A rms
400mA
rms (50/60Hz for 1 minute)
Average Rectification WARNING 5. Correct Selection of FUNCTION Switch
Max.Input
Overload Protection
Always confirm that FUNCTION Switch is set to the correct position. Do not
Current
measure voltage at mA
150A rms
100A rms
(50/60Hz for 1 minute)
WARNING 6. Maximum Input Observance
Do not measure voltage or current that exceed the specified maximum input
values.
WARNING 7. Test Lead Detachment
Average Rectification
Detach test leads from measuring circuit before switching measurement functions
Max.Input
Overload Protection
Voltage
or removing battery cover for battery replacement.
900V AC rms
600V rms
(50/60Hz for 1 minute)
WARNING 8. Safety Line
Do not put your fingers over the safety
line while current measurement.
3-2. PRECAUTION FOR USE
1. Do not power-on around strong-magnetic-field generated equipments
To avoid measurement error due to the noise effects to the internal "auto-initialize
zero" circuit, turn the power on keeping the unit away from such equipments like
transformer or motor. For example, keep 1m or more from 100A conductors.
Measurement must be started after confirming "0" indication on LCD.
3-3. GENERAL WARNINGS AND CAUTIONS
WARNING 1. Children and the persons who do not have enough knowledge
about electric measurements must not use this instrument.
WARNING 2. Do not measure the electricity naked or barefooted to protect
yourself from electrical shock hazard.
WARNING 3. Be careful not to get hurt with the sharp test lead pins.
CAUTION 1. Do not polish the case or attempt to clean it with any cleaning
fluid like gasoline or benzine. If necessary, use silicon oil or
antistatic fluid.
(refer to fig.1)
CAUTION 2.
Avoid the clamp meter from hard mechanical shock or
vibration, high temperature and strong magnetic field.
CAUTION 3. Remove the batteries when the clamp meter is out of use for a
long time. The exhausted batteries might leak electrolyte and
corrode the inside.
CAUTION 4. Do not measure AC high-frequency current. Clamp head
becomes heated and could damage the instrument.
4. NAME ILLUSTRATION
Alligator
Clips
Test
Leads
fig. 1
Clamp Head
4-1. LCD
Red
Test Lead
Allligator
Clip
fig. 2
A
and positions.
4-2. Clamp Head
Clamp on conductor(s) in AC current measurement.
4-3. Safety Line
The line to protect yourself agaist electrical shock hazard. Do not put your fingers
over this line while current measurement.
Safety Line
4-4. FUNCTION Switch
Turns the power on and selects measurement functions. After measurement, turn
it to "
4-5. DH Key : Display Hold
Holds indicating measurement values by pressing this key for 0.5 seconds or less.
("DH" lights up)
To cancel it : Press DH Key again for 0.5 seconds or less.
fig.3
4-6. LPF Key : Low Pass Filter Measurement
Activates low pass filter by pressing this key for 1 second or more. ("LPF" lights
up)
Low Pass Filter : high-frequency noise filter to reject approx.150Hz or more.
To cancel it : Press LPF Key again for 1 second or more.
4-7. COMP Key : Comparator Function
Buzzer sounds and vibrates if measuring value exceeds the setting value.
This function is only effective in
AC LEAKAGE CURRENT MEASUREMENT(
NOTE : Setting range is 1 to 99mA. Vibration alert is cancelable.
NOTE : This function is not available for
4-8. Input Terminals・Test Leads
Use for AC Voltage (
terminals matching "＋" and "−".
4-9. Trigger
Opens and close the clamp head. Release fingers from trigger after clamping
conductor(s).
3
FUNCTION Switch
（ DH Key
Safety Line
LPF Key
LCD
DH
SK-7825
AUTO BAT DH DIFF COMP Input
LPF
LPF ∼
KM Ω
−
mA Ｖ Terminals
COMP Hz
A
A APO m
LEAKAGE CLAMP METER
MAX 100A
COMP Key
Trigger
Test Lead
AUTO BAT DH DIFF
COMP
LPF
∼
KM Ω
−
Ｖ
Hz
A
APO m
: Lights up in auto-ranging measurement
AUTO
:
BAT Low battery warning
: Lights up in AC current / voltage measurement
∼
: Lights up when auto power off is enabled
APO
:
DH Lights up in display hold function
COMP : Lights up in comparator function
: Lights up when low pass filter is enabled
LPF
:
Lights up when vibration is enabled
(∼mA measurement only. Not available for ∼A and ∼V measurements.)
: Lights up in current measurement
mA, A
:
V Lights up in voltage measurement
".
mA measurement. For details, refer to 「5-2.
∼
mA).」
∼
∼ A and ∼ V measurements.
V) measurement. Plug test lead connector into input
∼
WARNING. Unplug test leads from input terminals while current
measurement.
4
fig.4