B&K Precision 308 - Datasheet User Manual
Accessories, Specifications

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
1M
Ω
-2000M
Ω
0.2M
Ω
- 1000 M
Ω
1000V 0-200M
Ω
0-2000M
Ω
500V 0-100M
Ω
0-2000M
Ω
250V 0-50M
Ω
0-2000M
Ω
Center Scale
50M
Ω
20M
Ω
1M
Ω
, 2M
Ω
, 4M
Ω
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
0-50
Ω
0-200
Ω
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
0-100
Ω
±(1.5%+3D) ±(1.5%+2D)
±(1.5%+2D)
100-200M
Ω
±(2%+5D)
±(1.5%+2D)
±(1.5%+2D)
200-1700M
Ω
±(3%+7D)
±(3%+4D)
±(3%+3D)
1700-2000M
Ω
±(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 deteri-
oration. 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, 2000M
Ω
(Model 300)
500V, 1000M
Ω
(Model 305)
One Year Warranty
307