KEW 3128 HIGH VOLTAGE 12000v INSULATION TESTER

• Microprocessor controlled high voltage insulation resistance tester with Diagnostic functions.

• Suitable for analyzing the insulation characteristics of cables, transformers, motors, generators, high-pressure switches, insulators, wiring installations, etc.

• 6 ranges: 500V, 1000V, 2500V, 5000V, 10000V, 12000V

Fine adjustment of voltage setting at each range is also possible

• Graphic representation of the insulation resistance and leakage current versus time on large display with bar graph and backlight.

• Can be operated from built-in rechargeable battery or from AC line.

• Automatic discharge after test with monitoring of the discharge voltage.

• Internal memory can store about 43,000 data (max).

• Robust design for field use with IP64 rating (with lid closed).

Insulation resistance (*): Accuracy is not guaranteed with setting of 250V or less

Rated voltage	500V	1000V	2500V	5000V	10000V	12000V
Max measurement value	500GΩ	1TΩ	2.5TΩ	5TΩ	35TΩ
Accuracy	400k～50GΩ ±5%rdg±3dgt	800k～100GΩ 5%rdg±3dgt	2M～250GΩ ±5%rdg±3dgt	4M～500GΩ ±5%rdg±3dgt	8M～1TΩ ±5%rdg±3dgt
	50.1G～500GΩ ±20%rdg (*)	101G～1TΩ ±20%rdg	251G～2.5TΩ ±20%rdg	501G～5TΩ ±20%rdg	1.01T～10TΩ ±20%rdg
	50.1G～500GΩ ±20%rdg (*)	101G～1TΩ ±20%rdg	251G～2.5TΩ ±20%rdg	501G～5TΩ ±20%rdg	10.1T - 35TΩ Values are displayed, but accuracy isn't guaranteed
Short circuit current	Max 5.0mA
Load resistor to output rated voltage	0.5MΩ or more	1MΩ or more	2.5MΩ or more	5MΩ or more	20MΩ or more	24MΩ or more

Output voltage

Rated voltage	500V	1000V	2500V	5000V	10000V	12000V
Monitor accuracy	±10%±20V	±10%±20V	±10%±20V	±10%±20V	±10%±20V	±10%±20V
Output accuracy	0 - +20%	0 - +10%	0 - +10%	0 - +10%	-5 - +5%	-5 - +5%
Selectable range	50 - 600V (in steps of 5V)	610 - 1200V (in steps of 10V)	1225 - 3000V (in steps of 25V)	3050 - 6000V (in steps of 50V)	6100 - 10000V (in steps of 100V)	10100 - 12000V (in steps of 100V)

Voltage measurement

Measuring range	DCV：±30 ～ ±600V、ACV：30 ～ 600V （50/60Hz）
Accuracy	±2%rdg±3dgt

Current measurement

Measuring range

5.00nA - 2.40mA (Depending on the insulation resistance)

Capacitance measurement

Measuring range	5.0nF ～ 50.0μF (500V/1000V/2500V/5000V)	5.0nF - 1.0µF (display range: 5.0nF - 50.0µF) (10000V/12000V)
Accuracy	±5%rdg±5dgt

General

Applicable standards	IEC 61010-1 CAT IV 600V Pollution degree 2, IEC 61010-031, IEC 61326, IEC 60529 (IP64): with the lid closed.
Operating temperature & humidity range	-10ºC - Relative humidity 85% or less 50ºC /(when operating with an external power supply, no condensation) 0ºC - 40ºC /Relative humidity 85% or less (when operating with battery, no condensation)
Storage temperature & humidity range	-20ºC - 60ºC / Relative humidity 75% or less (no condensation)
Power source	Rechargeable Lead storage battery (12V)* Charging time: approx. 8 hours / AC Power supply (100V - 240V, 50/60Hz) * Continuous measuring time: approx. 4 hours (a load of 100MΩ at the Insulation resistance 12000V Range.) approx. 2 hours (Max current consumption in range while rated currents are maintained.)
Dimensions	330 (L) × 410 (W) × 180 (D) mm *Instrument and Hard case
Weight	9kg approx. (including battery) *Instrument and Hard case
Included Accessories	7170 (Main cord), 7224A (Earth cord), 7225A (Guard cord), 7226A (Line probe), 7227A (Line probe with alligator clip), 8029 (Extension prod), 8212-USB-W (USB adaptor with KEW Windows (Software)), Instruction manual
Optional Accessories	7254 (Longer Line probe with alligator clip)