B2342
Emax VF
42/66
Doc. no.
Model
Apparatus
Scale
Page No
1SDH000909R0001
12.3.4.3. Measurements
On the Historical menu it is possibile toselect the measurements section.
In this area it is also possible to view at the last 25 storage measurements (Imax) or to reset the measurements (Reset Measurements)
The display it will show information about storage measurements as follows:
Ref.
Description
1
Type of Measurement
2
Date and Time of the storage measurement selected
3
Imax of the storage measurement selected
4
Measurement storage time
5
Graphic ammeter of last 25 measurements (the Se-
lected Measurement will blink)
To scroll all the measurement data, use the UP and DOWN push buttons. The blinking Graphic helps to identufy the timing of storage
(the last measurements recorded is the first one on the right).
With the reset measurements command, the Imax section will be empty, and no information can be scrolled.
The following are the measurement performances.
Type of measurement
Range of measurements available
Precision on standard operation range
Current
I > 0.1 In
± 5% (on range 0.5 In...1.2 In)
WARNING: The measurement precision refers to the admitted working range of frequency.
See para.12.3.5.1 for table of settings available to user.
12.3.4.4. Contact Wear
On the Measurements menu it is possible to read the Contact Wear percentage, indicating the percentage of wear on the CB contacts.
This is just an approximate estimation of the real value of contacts wear.
12.3.5. Settings
The following is the description of all the parameters and setting available to the user into the Settings area:
- CB Installation and CB nominal frequency (Circuit Breaker).
- Set of HW trip function.
- Optional Module PR120/D-M and PR120/K configuration (Modules).
- Data logger function configuration (Data logger).
- Set Measurement store time.
- Set system settings such as Language, Date, time, new password (System).
- Set Display Contrast.
12.3.5.1. Circuit Breaker
In this section it is possible to set the CB frequency, and is possible to access the section for CB installation.
Are available 4 different nominal frequency values:
Nominal frequency
Working range
6.6 Hz
1 Hz...8 Hz
16.6 Hz
3 Hz...20 Hz
25 Hz
5 Hz...30 Hz
50 Hz
10 Hz...60 Hz
WARNING: On PR122/VF the frequency measurement is not available.
All the trip tolerances detailed in para.12.3.3.5, and measurement tolerances detailed in para. 12.3.4.3, refer to
the guaranty that the nominal frequency is within the working range 0.2...1.25 of value set.
WARNING: The CB installation operation is not available to the user, only to ABB personnel.
12.3.5.2. HW trip
In this section it is possible to activate/deactivate the HW trip function.
If activated, and in the event of:
•
CB undefined
•
Rating Plug error
•
Installation error
a CB opening command will be given by the TC.
3
1
2
4
5
Содержание Emax VF
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