Rockwell Automation Publication 825-UM004D-EN-P - November 2012
89
Configuring Protection & Logic Functions
Chapter
6
For application on an induction motor, it is recommended that the installer
disable the elements by setting all four Power Factor Level settings to Off.
Frequency
The 825-P provides two warning and two trip overfrequency or underfrequency
elements with independent level and time-delay settings. When an element level
setting is less than the Nominal Frequency setting, the element operates as an
underfrequency element. When the level setting is greater than the Nominal
Frequency setting, the element operates as an overfrequency element.
The relay measures system frequency for these elements using the positive
sequence voltage if the voltage input option is present. Otherwise, the relay uses
positive sequence current.
Load Control Function
Table 33 - Frequency Settings
Setting Prompt
Setting Range
Factory Default
FREQ1 TRIP LEVEL
Off, 55.0…65.0 Hz
Off
FREQ1 TRIP DELAY
0.0…240.0 s
0.0
FREQ1 WARN LEVEL
Off, 55.0…65.0 Hz
Off
FREQ1 WARN DELAY
0.0…240.0 s
0.0
FREQ2 TRIP LEVEL
Off, 55.0…65.0 Hz
Off
FREQ2 TRIP DELAY
0.0…240.0 s
0.0
FREQ2 WARN LEVEL
Off, 55.0…65.0 Hz
Off
FREQ2 WARN DELAY
0.0…240.0 s
0.0
NOTE:
The setting range for Trip and Warn Levels shown in Table 33 are for Rated Freq. := 60 Hz. The
setting ranges are “Off, 45.0–55.0 Hz” when Rated Freq. := 50 Hz.
Table 34 - Load Control Settings
Setting Prompt
Setting Range
Factory Default
LOAD CONTROL SEL
Off, Current, Power, TCU
Off
LD CTL CUR UPPER
Off, 0.20…2.00 x
I
e
Off
LD CTL CUR LOWER
Off, 0.20…2.00 x
I
e
Off
LD CTL PWR UPPER
Off, 1…25000 kW
Off
LD CTL PWR LOWER
Off, 1…25000 kW
Off
LD CTL TCU UPPER
Off, 1…99%TCU
Off
LD CTL TCU LOWER
Off, 1…99%TCU
Off
Содержание 825-P
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Страница 4: ...4 Rockwell Automation Publication 825 UM004D EN P November...
Страница 44: ...44 Rockwell Automation Publication825 UM004D EN P November 2012 Chapter 3 Front Panel Operation...
Страница 64: ...64 Rockwell Automation Publication825 UM004D EN P November 2012 Chapter 5 Using MPS Explorer...
Страница 104: ...104 Rockwell Automation Publication825 UM004D EN P November 2012 Chapter 6 Configuring Protection Logic Functions...
Страница 130: ...130 Rockwell Automation Publication825 UM004D EN P November 2012 Chapter 9 825 PDN DeviceNet Communication Card...
Страница 182: ...182 Rockwell Automation Publication825 UM004D EN P November 2012 Chapter 12 ASCII Serial Communications...
Страница 186: ...186 Rockwell Automation Publication825 UM004D EN P November 2012 Chapter 13 Firmware Upgrade Instructions...
Страница 234: ...234 Rockwell Automation Publication 825 UM004D EN P April 2012 Chapter B ParameterList...
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