1. Safety Warnings
This instrument is designed and tested according to IEC Publication 61010: Safety Requirements for Electronic Measuring Apparatus. This manual contains warnings and safety rules that must be observed for safe operation.
Symbol Meanings:
- DANGER: Reserved for conditions and actions likely to cause serious or fatal injury.
- WARNING: Reserved for conditions and actions that can cause serious or fatal injury.
- CAUTION: Reserved for conditions and actions that can cause injury or instrument damage.
- [Refer to Manual Symbol]: Indicates that the user must refer to related parts in the manual for safe operation.
- [Double Insulation Symbol]: Indicates an instrument with reinforced or double insulation.
- [AC Symbol]: Indicates Alternating Current (AC).
- [DC Symbol]: Indicates Direct Current (DC).
- [AC/DC Symbol]: Indicates both AC and DC.
General Safety Precautions:
- Read and understand this manual before using the instrument.
- Keep the manual handy for quick reference.
- Use the instrument only for its intended applications and follow measurement procedures.
- Failure to follow instructions may cause injury, instrument damage, or damage to equipment under test.
- Do not make measurements on circuits above 600V AC or 60V DC.
- Do not make measurements with the bottom case removed.
- Keep fingers and hands behind the barrier during measurement.
- Do not expose the instrument to direct sun, extreme temperatures, water, or dust.
- Do not attempt to repair or modify the instrument yourself; return it to your distributor or Kyoritsu for service.
- Remove test leads before opening the case for battery or fuse replacement.
- Ensure the range switch is set to the appropriate position before measurement.
- Always insert test lead plugs fully into the appropriate terminals.
- If the instrument will not be used for a long period, remove batteries and store it properly.
- Do not use the instrument if it has structural abnormalities like a cracked case or exposed metal parts.
- Verify proper operation on a known source before use.
2. Features
- Tear-drop shaped jaws for ease of use in crowded areas and tight places.
- Safety design throughout, designed to IEC 61010 standards (CAT III 300V / CAT II 600V, Pollution Degree 2).
- Useful for checking DC voltage range, especially for power supply checking in emergency use.
- Pointer lock feature for easy reading in dimly lit or hard-to-read locations.
- Shrouded transformer jaws to further improve safety.
- Optional temperature probe available for temperature measurement.
3. Specifications
Measuring Range and Accuracy
| Ranges | Accuracy |
|---|---|
| AC current: 6/15/60/150/300A | ±3% of full scale |
| AC voltage: 150/300/600V | ±3% of full scale |
| DC voltage: 60V | ±3% of full scale |
| Resistance: ×1 Ω (1k Ω, 25 Ω mid-scale), ×10 Ω (10k Ω, 250 Ω mid-scale) | ±2% of scale length |
| Temperature (with optional Model 7060): -20 to +150°C | (0 to +100°C) ±5°C; (other ranges) ±10°C |
Overload Protection
| Range | Maximum overload |
|---|---|
| AC 6/15A | 10 sec for AC 60A |
| AC 60/150A | 10 sec for AC 300A |
| AC 300A | 10 sec for AC 360A |
| AC 150/300V | 10 sec for AC 600V |
| AC 600V | 10 sec for AC 720V |
| DC 60V | 10 sec for AC 230V |
| Resistance (×1/×10) | 230V AC, protection by fuse |
General Specifications:
- Location for use: Indoor use, Altitude up to 2000m.
- Storage Temperature and Humidity: -10 to +50°C, relative humidity up to 75% without condensation.
- Operating Temperature and Humidity: 0 to +40°C, relative humidity up to 90% without condensation.
- Conductor Size: Approx. 33mm diameter max.
- Safety Standard: IEC61010-1 CAT.II/III, IEC61010-2-031, IEC61010-2-032.
- Withstand Voltage: 3470VAC for 5 seconds between electrical circuit and housing cases or metal parts of jaws.
- Dimensions: 193(L) × 78(W) × 39(D)mm.
- Weight: Approx. 275g (battery included).
- Power Source: R6P (DC 1.5V) battery or equivalent.
Accessories (included)
- Instruction manual
- Carrying case Model 9052
- Test leads Model 7066
- R6P battery (included within the instrument)
- Two 0.5A/250V fuses (spare fuse included)
Accessories (optional)
- Multi-Tran Models 8004, 8008
- Temperature probe Model 7060
4. Preparation for Measurement
4.1 Releasing Pointer Lock
Slide the pointer lock button to the right position to unlock the pointer.
4.2 Meter Zero Adjustment
Set the pointer at the center of the "0" mark on the scale by rotating the zero adjuster with a screwdriver.
4.3 Checking Battery Voltage
a. Set the range switch to the "Ω1" or "Ω10" position.
b. Insert the red test lead into the OHM terminal and the black test lead to the COM terminal.
c. With the test leads shorted, try to set the pointer over the "0" mark at the right end of the resistance scale, using the OHM zero adjuster.
d. When the adjustment brings the pointer over the "0" mark, proceed to measurement. If not, replace the battery (See section 7 for battery and fuse replacement).
NOTE: The battery is needed only in resistance measurement. AC/DC voltage and AC current measurement can be made without the battery. If the instrument does not operate properly even after battery replacement, check the fuse and test leads.
5. Measurement
5.1 AC Current Measurement
WARNING: Do not make measurement on a circuit above 600V AC. Transformer jaw tips are designed not to short the circuit under test. If equipment under test has exposed conductive parts, extra precaution should be taken to minimize the possibility of shorting. Do not make measurement with the bottom case removed. Do not make current measurement with the test leads connected to the instrument. Do not measure current exceeding the overload protection limit. Keep fingers and hands behind the barrier during measurement.
CAUTION: When the order of the current under test is not known, make measurement first on the highest 300A range, then switch to the appropriate range.
a. Set the range switch to the "AC 300A" position.
b. Press the trigger to open the transformer jaws and clamp onto one conductor only. It is recommended that the conductor be placed at the center of the closed jaws.
c. Take the reading on the 300A current scale.
d. Set the range switch to the appropriate position based on the reading.
e. Take the reading on the appropriate scale.
| Range | Scale used | Multiply reading by |
|---|---|---|
| 6A | 60 | ×0.1 |
| 15A | 150 | ×0.1 |
| 60A | 60 | ×1 |
| 150A | 150 | ×1 |
| 300A | 300 | ×1 |
NOTE: Keep the transformer jaws fully closed during current measurement. The maximum conductor size is 33mm in diameter. Transformer jaws may buzz when measuring larger currents, but this does not affect accuracy.
5.2 AC Voltage Measurement
WARNING: Do not make measurement on a circuit above 600V AC. Do not make measurement with the bottom case removed. Do not apply voltage exceeding the overload protection limit. Keep fingers and hands behind the barrier during measurement.
a. Set the range switch to an AC voltage position. If the voltage is unknown, set to the highest 600V range.
b. Insert the red test lead into the V terminal and the black test lead into the COM terminal.
c. Connect the tip of the test leads to the circuit under test.
d. Take the reading on the scale for the selected range.
e. After completing the measurement, remove the test leads from the circuit under test.
| Range | Scale used | Multiply reading by |
|---|---|---|
| 150V | 150 | ×1 |
| 300V | 300 | ×1 |
| 600V | 600 | ×1 |
5.3 DC Voltage Measurement
WARNING: Do not make measurement on a circuit above 60V DC. Do not make measurement with the bottom case removed. Keep fingers and hands behind the barrier during measurement.
a. Set the range switch to the "DC 60V" position.
b. Insert the red test lead into the V terminal and the black test lead into the COM terminal.
c. Connect the red test lead tip to the positive side of the circuit under test and the black test lead tip to the negative side.
d. Take the reading on the 60V scale.
e. After completing the measurement, remove the test leads from the circuit under test.
5.4 Resistance Measurement
WARNING: Do not make measurement with the bottom case removed. Make sure that there is no voltage in the circuit or equipment under test. Keep fingers and hands behind the barrier during measurement.
CAUTION: Make sure that the range switch is set to an appropriate position before measurement. Always insert test lead plugs fully into the appropriate terminals.
a. Set the range switch to the "Ω1" or "Ω10" position.
b. Insert the red test lead into the OHM terminal and the black test lead to the COM terminal.
c. With the test leads shorted, set the pointer over the "0" mark at the right end of the resistance scale, using the OHM zero adjuster.
d. Connect the tip of the test leads to the circuit under test.
e. Take the reading on the resistance scale and multiply it as follows:
| Range | Scale used | Multiply reading by |
|---|---|---|
| ×1 Ω | Ω | ×1 |
| ×10 Ω | Ω | ×10 |
7. Battery and Fuse Replacement
WARNING: To avoid electric shock hazard, make sure to remove the test leads from the instrument before trying to replace batteries or fuses. Make sure to screw the bottom case back onto the instrument after battery or fuse replacement. Do not install a battery or fuse that does not have the specified rating.
7.1 Battery Replacement
a. Remove the test leads from the instrument.
b. Remove the screw on the back side of the bottom case to open the instrument.
c. Replace the battery with a new R6P battery or equivalent. The new battery must be installed in the orientation indicated inside the instrument.
d. Screw the bottom case back onto the instrument.
7.2 Fuse Replacement
The instrument's resistance measuring circuit is protected by a 0.5A/250V fuse. When the instrument does not operate properly in resistance measurement, check the fuse and replace it.
a. Remove the test leads from the instrument.
b. Remove the screw on the back side of the bottom case to open the instrument.
c. Replace the blown fuse with the spare fuse installed beneath the battery.
d. Screw the bottom case back onto the instrument.
8. Optional Accessories
Model 8004 and 8008 (Multi-Tran)
Multi-Trans extend existing current measuring range up to 3000A as well as the maximum conductor size.
| Models | Max conductor size (mm in diameter) | Measuring range | Input to output ratio |
|---|---|---|---|
| Model 8004 | 100 | AC 0~1000A | 10:1 |
| Model 8008 | 100 | AC 0~3000A | 10:1 |
Model 7060 (Discontinued)
Model 7060 is a temperature probe with a measuring range from -20°C to +150°C.
WARNING: Do not make measurement on a metal part with a voltage more than 30V AC or 60V DC.
9. After-sales Service
9.1 Sending for Repair
Provide a description of the failure, your name, address, and telephone number. Pack the instrument securely to prevent damage during transportation and forward it to your distributor.
9.2 Periodic Calibration
For maintaining measurement accuracy, it is recommended to forward the instrument to Kyoritsu Repair Center for calibration once every year.
NOTE: Calibration is charged.
KYORITSU reserves the rights to change specifications or designs described in this manual without notice and without obligations.
Contact Information:
KYORITSU ELECTRICAL INSTRUMENTS WORKS, LTD.
2-5-20, Nakane, Meguro-ku, Tokyo, 152-0031 Japan
Phone: +81-3-3723-0131
Fax: +81-3-3723-0152
Website: http://www.kew-ltd.co.jp
