
Contents
ii
Using Alligator Clips (when using two
or three test leads) .................................................78
6.1 Making manual measurements 79
6.2 Making automatic measurements
................................................. 82
6.3 Measurement examples ........... 83
Earth leakage current measurement ......... 83
Touch current measurement ..................... 84
Patient leakage current measurement*
(Patient connection - Earth) ..................... 90
Patient leakage current measurement*
(external voltage on a SIP/SOP).............. 93
Patient leakage current measurement*
Patient leakage current measurement*
(external voltage on metal accessible part
not protectively earthed) .......................... 97
Patient auxiliary current measurement* .... 99
Total patient leakage current measurement*
(Patient connection - Earth) ................... 100
(Enclosure - Enclosure) ......................... 101
(As required) .......................... 102
Checking Saved Measurement Data ....... 104
Displaying Saved Measurement Data ..... 104
Selecting Saved Measurement Data ...... 105
Deleting Saved Data ............................... 105
6.5 Saving Measurement Conditions
(Panel Save Function)
(as required) .......................... 106
(as required) .......................... 108
Setting up and connecting a printer ......... 108
System Screen Configuration .................. 116
7.1 Setting the Mode (To use the
instrument as a voltmeter) ..... 117
Measurement Conditions)...... 120
7.3 Initializing the Instrument ....... 121
7.4 Setting the Display Language 123
7.5 Checking Fuses(During Earth
leakage current and protective
conductor current measurements)
................................................ 123
7.6 Self-Test ................................. 124
7.7 Power On Polarity Switching
(to keep equipment under test
on during polarity switching) .. 126
Connect the isolation transformer............ 126
Setting Power On Polarity Switching ....... 127
Relay check 2 .......................................... 128
(set instrument status) ........... 129
7.9 Setting Lower Limit Values (factor)
............................................... 130
7.10 Setting Indication Unit ............ 131
7.11 Setting Date and Time ........... 132
(For Communication and Printing)
................................................ 133
7.13 Setting the Beep Sound ......... 135
7.14 Setting the Backlight .............. 136
Instrument From a
Computer
(RS-232C,
USB interface) 139
8.1 ST5540/ST5541 Remote Interface
Overview (USB connection) ... 140
8.2 Connect and be sure to tighten
the screws on the connector .. 141
Installation and operation procedures ..... 143
Summary of Contents for ST5540
Page 2: ......
Page 6: ...Contents iv Index i ...
Page 29: ...23 2 Chapter 2 Instrument Labels and Screens Instrument Labels and Screens Chapter 2 ...
Page 80: ...4 8 Changing the Measurement Method Auto Manual 74 ...
Page 121: ...115 8 9 7 Chapter 7 Instrument System Settings Instrument System Settings Chapter 7 ...
Page 144: ...7 14 Setting the Backlight 138 ...
Page 284: ...10 14 Measurement Networks 278 ...
Page 290: ...11 4 Instrument Disposal 284 ...
Page 320: ...Appendix4 External Dimensions A30 ...
Page 323: ......
Page 324: ......
Page 325: ......
Page 326: ......