YOKOGAWA 2404 SERIES INSULATION TESTERS
The 2404 insulation tester is a reliable, hand-driven insulation tester using a DC-DC converter. The 2404 includes a number of useful and easy-to-use features.
Six different models are available for different test voltages (DC) and MΩ ranges. With the exception of the 240415 and 240416, all models provide a convenient continuity range of 0 to 500Ω full scale.
*This product is produced and handled by Yokogawa AMERICA DO SUL LTDA in Brazil. Please contact through your local Yokogawa's representative.
Specifications - Model 240413
|
Testing Voltage (DC)/MΩ Range |
500 V/100 MΩ |
|
AC Voltage Measurement |
0 to 300 V |
|
Continuity Range |
0 to 500 Ω |
|
Width |
112 mm |
|
Height |
184 mm |
|
Depth |
105 mm |
|
Weight |
1.3 kg |
|
Accuracy |
AC voltage measurement - ±10% of full scale
Insulation resistance measurement - ±5% of indicated value in effective measuring range 1, ±10% of indicated value in effective measuring range 2, less than 0.7% of scale length at zero and infinity
Low resistance measurement - less than 5% of full scale |
|
Approx. Scale Length |
3 1/2 in
88 mm |
|
Measuring Terminal Voltage |
More than 90% of testing voltage at center scale, or ±10% of testing voltage at infinity (at handle speed of more than 120 rpm) |
|
Min. Rotational Speed of Handle |
120 rpm |
|
Case |
Polycarbonate resin, green-yellow |
|
Insulation Resistance |
More than 50 MΩ at 500 V DC between electric circuits and case/handle |
|
Dielectric Strength |
2000 V AC (100 to 1000 V models) or 3000 V AC (2000 V model) for one minute between electric circuits and case/handle |
|
Accessories Supplied at No Extra Cost |
B9634FF carrying case, spare fuses (for low Ω measurements) - 2 pcs., built in 240411 to 240414 |
|
Optional Accessories |
B9634FA test leads (1 set/unit) |
Specifications - Model 240414
|
Testing Voltage (DC)/MΩ Range |
500 V/1000 MΩ |
|
AC Voltage Measurement |
0 to 300 V |
|
Continuity Range |
0 to 500 Ω |
|
Width |
112 mm |
|
Height |
184 mm |
|
Depth |
105 mm |
|
Weight |
1.3 kg |
|
Accuracy |
AC voltage measurement - ±10% of full scale
Insulation resistance measurement - ±5% of indicated value in effective measuring range 1, ±10% of indicated value in effective measuring range 2, less than 0.7% of scale length at zero and infinity
Low resistance measurement - less than 5% of full scale |
|
Approx. Scale Length |
3 1/2 in
88 mm |
|
Measuring Terminal Voltage |
More than 90% of testing voltage at center scale, or ±10% of testing voltage at infinity (at handle speed of more than 120 rpm) |
|
Min. Rotational Speed of Handle |
120 rpm |
|
Case |
Polycarbonate resin, green-yellow |
|
Insulation Resistance |
More than 50 MΩ at 500 V DC between electric circuits and case/handle |
|
Dielectric Strength |
2000 V AC (100 to 1000 V models) or 3000 V AC (2000 V model) for one minute between electric circuits and case/handle |
|
Accessories Supplied at No Extra Cost |
B9634FF carrying case, spare fuses (for low Ω measurements) - 2 pcs., built in 240411 to 240414 |
|
Optional Accessories |
B9634FA test leads (1 set/unit) |
Specifications - Model 240415
|
Testing Voltage (DC)/MΩ Range |
1000 V/2000 MΩ |
|
AC Voltage Measurement |
0 to 300 V |
|
Width |
112 mm |
|
Height |
184 mm |
|
Depth |
105 mm |
|
Weight |
1.3 kg |
|
Accuracy |
AC voltage measurement - ±10% of full scale
Insulation resistance measurement - ±5% of indicated value in effective measuring range 1, ±10% of indicated value in effective measuring range 2, less than 0.7% of scale length at zero and infinity
Low resistance measurement - less than 5% of full scale |
|
Approx. Scale Length |
3 1/2 in
88 mm |
|
Measuring Terminal Voltage |
More than 90% of testing voltage at center scale, or ±10% of testing voltage at infinity (at handle speed of more than 120 rpm) |
|
Min. Rotational Speed of Handle |
120 rpm |
|
Case |
Polycarbonate resin, green-yellow |
|
Insulation Resistance |
More than 50 MΩ at 500 V DC between electric circuits and case/handle |
|
Dielectric Strength |
2000 V AC (100 to 1000 V models) or 3000 V AC (2000 V model) for one minute between electric circuits and case/handle |
|
Accessories Supplied at No Extra Cost |
B9634FF carrying case, spare fuses (for low Ω measurements) - 2 pcs., built in 240411 to 240414 |
|
Optional Accessories |
B9634FA test leads (1 set/unit) |
Specifications - Model 240416
|
Testing Voltage (DC)/MΩ Range |
2000 V/5000 MΩ |
|
AC Voltage Measurement |
0 to 300 V |
|
Width |
112 mm |
|
Height |
184 mm |
|
Depth |
105 mm |
|
Weight |
1.3 kg |
|
Accuracy |
AC voltage measurement - ±10% of full scale
Insulation resistance measurement - ±5% of indicated value in effective measuring range 1, ±10% of indicated value in effective measuring range 2, less than 0.7% of scale length at zero and infinity
Low resistance measurement - less than 5% of full scale |
|
Approx. Scale Length |
3 1/2 in
88 mm |
|
Measuring Terminal Voltage |
More than 90% of testing voltage at center scale, or ±10% of testing voltage at infinity (at handle speed of more than 120 rpm) |
|
Min. Rotational Speed of Handle |
120 rpm |
|
Case |
Polycarbonate resin, green-yellow |
|
Insulation Resistance |
More than 50 MΩ at 500 V DC between electric circuits and case/handle |
|
Dielectric Strength |
2000 V AC (100 to 1000 V models) or 3000 V AC (2000 V model) for one minute between electric circuits and case/handle |
|
Accessories Supplied at No Extra Cost |
B9634FF carrying case, spare fuses (for low Ω measurements) - 2 pcs., built in 240411 to 240414 |
|
Optional Accessories |
B9634FA test leads (1 set/unit) |
Specifications - Model 240422
|
Width |
112 mm |
|
Height |
184 mm |
|
Depth |
105 mm |
323511 EARTH TESTERS
The Model 323511 Earth Tester is a convenient test set to facilitate very easy, accurate measurements of earth resistance. Without a hand-driven generator, this instrument consists of a battery-operated silicon-transistorized DC-AC inverter, an AC potentiometer measuring dial and a galvanometer. Just push the pushbutton switch and move the dial so that the galvanometer shows balanced condition Then, resistance is directly read on the dial scale. A wide range of earth resonance of 0 to 1,000 Ω can be measured by a single measuring dial without range changeover. Furthermore, earth voltage can also be measured on the galvanometer scale by positioning the selector switch.
Earth Ground Resistance Tester, 3 Pole, with Carrying Case
Specifications - 323511 Earth Testers
|
Measuring Range (Earth Resistance) |
0 to 1,000 Ω (Min. Scale Div. 0.1 Ω) |
|
Measuring Range (Earth Voltage) |
0 to 30 V |
|
Scale (Earth Resistance) |
3-dign logarithmic continuous scale on measuring dial |
|
Scale (Earth Voltage) |
Uniform state on galvanometer |
|
Accuracy (Earth resistance) |
±2.5% of 20 Ω (±0.5 Ω or min. one div) in the range of 2 to 20 Ω
±2.5% of 200 Ω(±5% or min. one div.) in the range of 20 to 200 Ω
±5% of 2 Ω (±0,1 Ω or min. one div.) in the range of 0 to 2 Ω
5% of 1,000 Ω (±50 A or min. one div.) .in the range of 200 to 1,000Ω |
|
Accuracy (Earth Voltage) |
&#plusmn;5% of full scale value |
|
Measuring Frequency |
500 Hz |
|
Ambient Temperature Influence |
Variation in indication Is within the corresponding one scale division for temperature charge by 20 ± 20°C. |
|
Battery Voltage Influence |
The accuracy is maintained within the specified limit even if the voltage decreases dawn to approx. 4 V under operating condition. |
|
Earth Voltage Influence |
Variation in Indication is within the corresponding one scale division for the earth voltages of up to 10V at commercial frequency. |
|
Power Source |
Four 1.5 V batteries (JIS SUM-1, ANSI D, Mono 1.5 V or equivalent) |
|
Insulation Resistance |
More than 100MΩ at 1,000V DC between electrical circuit and case |
|
Dimensions |
Approx. 122 x 190 x 124 mm (4 7/8 x 7 1/2 x 4 7/8") not including accessories. |
|
Weight |
Approx. 1.5 kg (3.3 lbs) for Instrument only.
Approx. 3.5 kg (7.7 lbs) including all accessories |
|
Accessories1 |
Accessory storage bag - 1 pcs. (cloth-made knapsack)
Carrying case - 1 pcs. (Shoulder bag type)
Earth spikes - 2 pcs. (one each for potential and current)
Measurement leads (yellow 10 m or 11 yd for potential) 3pcs.
Measurement leads (green 5 m or 5.5 yd for earth plate) 3 pcs.
Measurement leads (red 20 m or 22 yd for current) 3 pcs. |
|
Optional Accessories |
B9646CG Auxiliary earthing net |
|
1 Accessories Supplied at No Extra Cost | |
|
Features - 323511 Earth Testers
3 terminal measurement of earth resistance
Two earth etoctrodes are used in addition to the system earth under test. Test electrode resistance is not critical, up to 10 kΩ is tolerable.
Accurate, wide-range logarithmic scale
YOKOGAWA's technology has produced a potentiometer with accurate, wide-range logarithmic scale to eliminate the necessity for range changeover. Accuracy is better than 5% from 2 to 1/1000Ω, and maximum resolution is 0.1Ω
AC potentiometer bridge, synchronous detector
The bridge uses a transistorized 500 Wt invertor and synchronous detector, so is not affected by DC or 50/60 Hz earth voltages of normally operating equipment. (An AC voltmeter mode is provided to check earth voltage)
Portable yet rugged and shockproof Bridge balance is indicated by a ragged yet sensitive taut-band suspension galvanometer. The case is of impact-resistant ABS resin.
