B&K Precision 308 Datasheet

Accessories

60

308

305

300

Type Analog Analog Analog Digital
Output Voltage 1000VDC 500VDC 1000VDC 1000VDC
Maximum current 250µA 500µA 2mA 1.2mA
Resistance Range 1MΩ -2000MΩ 0.2MΩ - 1000 MΩ 1000V 0-200MΩ 0-2000MΩ

500V 0-100MΩ 0-2000MΩ
250V 0-50MΩ 0-2000MΩ

Center Scale 50MΩ 20MΩ 1MΩ, 2MΩ, 4MΩ Does not apply
Accuracy

Infinity: within 1% of scale length

Zero: within 1% of scale length

All points ±5% of reading

AC Voltage Test
Range 0 to 600 VDC Live Circuit Indicator
Frequency Response 10Hz to 100kHz
Accuracy ±4% of full scale
Low resistance Test Does not apply 0-50Ω 0-200Ω
Accuracy Does not apply ±5% of reading ±(1.5% + 2 digits)
General Specifications
Power Requirements Six “AA” cells (supplied) Eight “AA” cells (supplied)
Battery Life 4 hours typical alkaline 12 hours continuous 10 hours continuous w/alkaline
Operating Temperature 32˚ to 122˚F (0˚ to 50˚C), ≤ 70% RH
Storage Temperature -4˚ to 140˚F (-20˚ to 60˚C), <80% RH (with batteries removed)
Dimensions 6.66 x 4.18 x 1.42" (169 x 106 x 36mm) 7 x 8.5 x 3.5" (180 x 220 x 90mm)
Weight 15oz. (430g) w/batteries 2.6 lb (925g) with batteries

250V 500V 1000V

0-100Ω ±(1.5%+3D) ±(1.5%+2D) ±(1.5%+2D)
100-200MΩ ±(2%+5D) ±(1.5%+2D) ±(1.5%+2D)
200-1700MΩ ±(3%+7D) ±(3%+4D) ±(3%+3D)
1700-2000MΩ ±(4%+8D) ±(4%+6D) ±(4%+5D)

Models 300, 305

These insulation testers are intended primarily for periodic testing of industrial
motors, transformers, electrical wiring, and cable insulation for signs of deteri­oration. Low readings may indicate impending failure and permit replacement
during routine maintenance rather than risking production downtime. Also
useful for safety testing of TV sets and appliances to assure
no hazardous leakage current. The voltage and resistance ratings for insulation
testing are often specified for the product to be tested.

Supplied: Batteries, Carrying Case, Test Leads, Instruction Manual Batteries, Integral Carrying Case w/strap, Test Lead, Instruction Manual

Specifications

models

300 305 307 308

Models 307, 308

■ Selectable 250V, 500V, or 1000V insulation test

■ Low resistance test

■ Extra rugged integral carrying case

■ Live circuit indicator warns of safety hazard

■ Push to test

■ Test insulation resistance

■ Measure AC voltage to 600V

■ Battery powered

■ 1000V, 2000MΩ (Model 300)

500V, 1000MΩ (Model 305)

One Year Warranty

307