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Category Ratings and Usage
Part/Accessory
165XB Electrical Installation Tester
Country-Specific Mains Cord
Multifunction Probe (red)
Test Lead (red/green/blue)
Test Probe (red/green/blue)
Alligator Clip (red/green/blue)
UK Test Leads and Probes:
Non-fused (red/green/blue)
Fused (red/green/blue)
Electrical Measurement Specifications
The accuracy specification is defined as ±(% reading +digit counts) at 23 °C ±5 °C, ≤80 % RH. Between -10 °C and 18 °C
and between 28 °C and 40 °C, accuracy specifications may degrade by 0,1 x (accuracy specification) per °C. The
following tables can be used for the determination of maximum or minimum display values considering maximum
instrument operating uncertainty per EN61557-1, 5.2.4.
Insulation Resistance (R
50 V
100 V
1
1.12
1
1.12
2
2.22
2
2.22
3
3.32
3
3.32
4
4.42
4
4.42
5
5.52
5
5.52
6
6.62
6
6.62
7
7.72
7
7.72
8
8.82
8
8.82
9
9.92
9
9.92
10
11.02
10
11.02
20
22.02
20
22.02
30
33.02
30
33.2
40
44.02
40
44.2
50
55.02
50
55.2
60
66.2
70
77.2
80
88.2
90
99.2
100
110.2
Printed
CAT II
CAT Rating
250 V
CAT III 500 V
√
CAT IV 300 V
√
CAT II 250 V
√
CAT III 1000 V
√
CAT III 1000 V
√
CAT III 1000 V
√
CAT III 1000 V
√
CAT III 1000 V
√
CAT III 600 V
√
)
ISO
250 V
500 V
1
1.3
1
1.3
2
2.4
2
2.4
3
3.5
3
3.5
4
4.6
4
4.6
5
5.7
5
5.7
6
6.8
6
6.8
7
7.9
7
7.9
8
9.0
8
9.0
9
10.1
9
10.1
10
11.2
10
11.2
20
22.2
20
22.2
30
33.2
30
33.2
40
44.2
40
44.2
50
55.2
50
55.2
60
66.2
60
66.2
70
77.2
70
77.2
80
88.2
80
88.2
90
99.2
90
99.2
100
110.2
100
110.2
200
220.2
200
220.2
300
347
400
462
500
577
CAT III
CAT IV
500 V
300 V
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
1000 V
1
1.3
2
2.4
3
3.5
4
4.6
5
5.7
6
6.8
7
7.9
8
9.0
9
10.1
10
11.2
20
22.2
30
33.2
40
44.2
50
55.2
60
66.2
70
77.2
80
88.2
90
99.2
100
110.2
200
220.2
300
345
400
460
500
575
600
690
700
805
800
920
900
1035
1000
1150
Electrical Installation Tester
Specifications
5
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