접지저항
접지저항 4-wire 모드와 한개의 클램프 접지저항 방식
측정범위은 EN61557와 같은 0.67 Ω ~ 9999 Ω이다.
|
측정범위 R (Ω) |
분해능 (Ω) |
오차 |
|
0.00 ~ 19.99? |
0.01 |
±(3 % of reading + 3 digits) |
|
20.0 ~ 199.9? |
0.1 |
±(3 % of reading + 3 digits) |
|
200 ~ 1999? |
1 |
± 5 % of reading |
|
2000 ~ 9999? |
1 |
± 10 % of reading |
Automatic test of probe resistance yes
Automatic test of voltage noise yes
Open-terminal test voltage 40 VAC
Test voltage frequency 125 Hz
Short-circuit test current < 20 mA
Low clamp current indication yes
Noise current indication yes
접지저항 두개의 클램프방식
|
측정범위 R (Ω) |
분해능 (Ω) |
오차 |
|
0.00 ~ 19.9 |
0.01 |
± (10 % of reading + 10 digits) |
|
20.0 ~ 30.0 |
0.1 |
± (20 % of reading) |
|
30.1 ~ 39.9 |
0.1 |
±( 30 % of reading) |
Test voltage frequency 125 Hz
Noise current indication yes
Low clamp current indication yes
대지저항측정
|
측정범위 (Ωm) |
분해능 (Ωm) |
오차 |
|
0.0 ~ 99.9 |
0.1 |
연산값, 접지저항 4-wire 방식에 간주한다. |
|
100 ~ 999 |
1 |
|
1.00k ~ 9.99k |
0.01k |
|
10.0k ~ 99.9k |
0.1k |
|
>100k |
1k | Wenner method principle with equal distances between test probes:
ρ = 2·π·distance·R, with R as measured resistance in 4-wire method.
TRMS Clamp current
|
측정범위 |
분해능 (mA) |
오차 |
|
0.0 mA ~ 99.9 mA |
0.1mA |
±(3 % of reading + 3 digits) |
|
100 mA ~ 999 mA |
1 mA |
±(3 % of reading + 3 digits) |
|
1.00 A~ 19.99 A |
0.01 A |
±(3 % of reading + 3 digits) |
Input resistance 100 Ω
Maximum input current 30 mA (=30 A ∞ current clamp with ratio 1000:1)
Measurement principle current clamp, ratio 1000:1
Nominal frequency 40 Hz ~ 500 Hz
기본사양
전 원 6 x 1.5 V battery or rechargeable battery, size AA
Operation typical 20 h
Overvoltage category 50 V CAT IV
Protection classification double insulation
Pollution degree 2
Protection degree IP 40
Display 128 x 64 dots matrix display with backlight
Communication transfer speed 115200 baud (RS 232) / 256000 baud (USB)
Memmory 1900 measurements
사이브 (w x h x d) 14 cm x 8 cm x 23 cm
Weight without battery cells 0,85 kg
 
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