Beha-Amprobe GT-650, Руководство пользователя

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GT-650/GT-900 User's Manual
94
Pre-Tests and Protection
Function Tests, protections Notes
Switching
ON the
instrument - Protective earth (PE)
of mains socket Pre-test.
If the PE terminal is not correctly connected to earth, then
“PE DISCONNECTED! TURN OFF NOW!” message will be
displayed and any further operation will be disabled.
Switch off the tester immediately, danger!
- Fuse F2 Pre-test.
If the F2 fuse is blown, then “FUSE 2!” message will be
displayed and any further operation will be disabled.
R
PE
- U
EXT PE/PROBE1

3.75 V
Pre-test.
If an external voltage higher than 3.75 V is detected
before starting the test, then “EXTERNAL VOLTAGE!”
message will be displayed and further R
PE
tests will be
disabled.
- I
SUB INT

0.15 mA
Path pre-test (self-test).
If the instrument’s measurement path is interrupted e.g.
due to blown internal fuse, then “ERROR 1” message
will be displayed and further tests will be disabled.
- Fuse F3 Pre-test and during the test.
If the F3 fuse is blown, then “FUSE 3!” message will be
displayed and further R
PE
tests will be disabled.
- U
EXT PROBE1/GND

50 V
- U
EXT PROBE2/GND

50 V
Pre-test and during the test.
If an external voltage higher than 50 V is detected
before starting the R
PE
test or during it, then “EXTERNAL
VOLTAGE!” message will be displayed and further R
PE
tests will be disabled.
- U
EXT PE/PROBE1

7.60 V
During the test.
If an external voltage higher than 7.6 V is detected
during the R
PE
test, then the test will be stopped and
“EXTERNAL VOLTAGE!” will be displayed.
R
INS
- U
LN/PE

50 V
Pre-test.
If an external voltage higher than 50 V is detected
before starting the R
INS
test, then “EXTERNAL
VOLTAGE” message will be displayed and further R
INS
tests will be disabled.
- I
SUB INT

0.15 mA
Path pre-test (self-test).
If the instrument’s measurement path is interrupted e.g.
due to blown internal fuse, then “ERROR 1” message
will be displayed and further tests will be disabled.
- U
EXT PROBE1/GND

50 V
- U
EXT PROBE2/GND

50 V
(PC II and PC III only)
- U
EXT PE/GND

50 V
- U
EXT LN/GND

50 V
Pre-test.
If an external voltage higher than 50 V is detected
before starting the R
INS
test, then “EXTERNAL
VOLTAGE” message will be displayed and further R
INS
tests will be disabled.
I
SUB
- I
SUB INT

0.15 mA
Path pre-test (self-test).
If the instrument’s measurement path is interrupted e.g.
due to blown internal fuse, then “ERROR 1” message
will be displayed and further tests will be disabled.
- U
EXT PROBE1/GND

50 V
- U
EXT PROBE2/GND

50 V
- U
EXT PE/GND

50 V
Pre-test.
If an external voltage higher than 50 V is detected
before starting the I
SUB
test, then “EXTERNAL VOLTAGE”
message will be displayed and further I
SUB
tests will be
disabled.