User Manuals: HT COMBI421 Multifunction Tefter

Manuals and User Guides for HT COMBI421 Multifunction Tefter. We have 1 HT COMBI421 Multifunction Tefter manual available for free PDF download: User Manual

HT COMBI421 User Manual (88 pages)

Brand: HT | Category: Measuring Instruments | Size: 1 MB

Table of Contents
3
Safety Precautions and Procedures
6
Preliminary Instructions
6
During Use
6
After Use
7
Overvoltage Categories - Definitions
7
General Description
8
Introduction
8
Instrument Operation
8
Preparation for Use
9
Initial Checks
9
Instrument Power Supply
9
Calibration
9
Storage
9
Nomenclature
10
Instrument Description
10
Backlighting
10
Keyboard Description
11
Display Description
11
Initial Screen
11
Main Menu
12
Auto ÷ Pwr
12
SET - Instrument Settings
12
Language
12
Auto Power off
13
Nominal Voltage
13
Frequency
13
System
13
Mem
13
Rs232
13
Operating Instructions
14
Auto
14
Description of Anomalous Results
16
LOWOHM: Continuity Test of Earth Leads with 200Ma
19
CAL Mode
21
Description of Anomalous Results
22
M: Measurement of the Insulation Resistance
24
Description of Anomalous Results
26
RCD: Test on A-Type and AC-Type Rcds
28
AUTO Mode
30
Mode
31
X1, X2, X5 Mode
32
Mode
33
RA Mode
34
Description of Anomalous Results
34
LOOP: Measurement of Line/Loop Impedance
38
P-N Mode
40
P-P Mode
41
P-PE Mode in TT or TN Systems
42
P-PE Mode in IT Systems
43
Description of Anomalous Results
43
R a : Measurement of the Total Earth Resistance through the Socket-Outlet
46
Description of Anomalous Results
48
123: Phase Sequence Test
51
Description of Anomalous Results
54
AUX: Real Time Measurement of the Environmental Parameters
54
AIR, RH, TMP °F, TMP °C, Lux Mode
56
Description of Anomalous Results
56
LEAK: Real Time Measurement of the Leakage Current through an External Clamp
57
Description of Anomalous Results
58
Mains Analysis
59
PWR: Real Time Measurement of the Mains Parameters
59
PAR Mode
60
HRM V Ane HRM I Mode
60
Memory
61
How to Save a Measure
61
Description of Anomalous Results
61
Saved Data Management
62
How to Recall a Measure
62
How to Delete the Last Measure or All of Them
63
Description of Anomalous Results
63
Connecting the Instrument to the Pc
64
Maintenance
65
General
65
Battery Replacement
65
Instrument Cleaning
65
End of Life
65
Specifications
66
Technical Feratures
66
Reference Guidelines
70
General
70
Reference Standards for Verification Measurements
70
General Characteristics
70
Environment
70
Environmental Working Conditions
70
Accessories
70
Service
71
Warranty Conditions
71
Practical Reports for Electrical Tests
72
Continuity Measurement on Protective Conductors
72
Purpose of the Test
72
Installation Parts to be Checked
72
Allowable Values
72
Insulation Resistance Measurement
73
Purpose of the Test
73
Check of the Circuit Separation
76
Definitions
76
Purpose of the Test
76
Installation Parts to be Checked
76
Allowable Values
76
Working Test of RCDS
78
Purpose of the Test
78
Installation Parts to be Checked
78
Allowable Values
78
Note
78
Test of RCD Tripping Current
79
Purpose of the Test
79
Installation Parts to be Checked
79
Allowable Values
79
Note
79
Measurement of Short-Circuit Impedance
80
Purpose of the Test
80
Installation Parts to be Checked
80
Allowable Values
80
Fault Loop Impedance Measurement
80
Earth Resistance Measurementin TT Systems
81
Purpose of the Test
81
Installation Parts to be Checked
81
Voltage and Current Harmonics
82
Theory
82
Limit Values for Harmonics
82
Presence of Harmonics: Causes
83
Power and Power Factor Definition
84
Presence of Harmonics: Consequences
84
Note
85
Conventions on Powers and Power Factors
85

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User Manuals: HT COMBI421 Multifunction Tefter

HT COMBI421 User Manual (88 pages)

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