Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:19

From 2.1 to 3.1

From version 3.1

edited by Admin
on 2024/12/04 16:33

Change comment: There is no comment for this version

To version 29.1

edited by Admin
on 2025/04/09 12:19

Change comment: There is no comment for this version

Raw
Rendered

Summary

Page properties (2 modified, 0 added, 0 removed)
Attachments (0 modified, 10 added, 0 removed)

Details

Page properties

Parent

@@ -1,1 +1,1 @@
--drafts.bms-main-3.3\. Settings.WebHome
++Battery management systems.BMS Main 3.3\. Configuration.WebHome

Content

@@ -1,5 +1,5 @@
  (% data-numbered-headings-start="3" style="--numbered-headings-start: 2;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
--= Settings =
++= Configuration =
  (% data-numbered-headings-start="4" style="--numbered-headings-start: 3;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
  == Protections ==
@@ -6,6 +6,12 @@
  The BMS Main 3 device continuously monitors the state of the cells, the external environment and, when detecting abnormalities, protects the battery and system components from damage.
++(% class="box errormessage" %)
++(((
++**Attention!**
++Behavior of contactors at different errors is configured in **corresponding contactor settings**!
++)))
++
  === Overcurrent ===
  The BMS Main 3 device performs the overcurrent protection depending on current sensor values.
@@ -12,7 +12,7 @@
  To change the overcurrent protection of the battery, select the "Protections → Overcurrent" section:
--[[image:1733328382376-958.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
++[[image:1735224601506-488.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="123" width="800"]]
  In this section:
@@ -37,11 +37,44 @@
  * the current is positive (charging) or zero, and its modulo value is less than the “Tolerant charging current” value for the “Delay before clearing the error” time;
  * the current is negative (discharging) or zero, and its modulo value is less than the “Tolerant discharging current” value for the “Delay before clearing the error” time.
--(% class="box infomessage" %)
--(((
--If there is the "Overcurrent" error, the **charging **and **discharging **contactors open.
--)))
++=== Charge current limit ===
++The BMS Main 3 device can check if the charging current exceeds the estimated limit based on the [[Charge map>>doc:Battery management systems.BMS Main 3.3\. Configuration.3\.3 Control.WebHome||anchor="HChargemap"]]. If current exceeds the calculated limit more than configured difference, "Current limit" error is generated.
++
++Current difference is separated to two regions by the threshold value. Maximum current in Region 1 is calculated by the absolute difference, in Region 2 – by the relative difference.
++
++To change the overcurrent protection of the battery, select the "Protections → Charge current limit" section:
++
++[[image:1735225207687-430.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="113" width="800"]]In this section:
++
++* Enable – a flag to enable the protection;
++* Threshold to switch from Region 1 to Region 2 – a current value at which current excess calculation will be switched from absolute to relative difference, A;
++* Region 1: Current difference – a value of maximum absolute current difference, A;
++* Region 2: Current difference – a value of maximum relative current excess, A;
++* Delay before setting the error, millisecond;
++* Delay before clearing the error, second;
++* Lock – a flag to block the error until the device is restarted.
++
++=== Discharge current limit ===
++
++The BMS Main 3 device can check if the discharging current exceeds the estimated limit based on the [[Discharge map>>doc:Battery management systems.BMS Main 3.3\. Configuration.3\.3 Control.WebHome||anchor="HDischargemap"]]. If current exceeds the calculated limit more than configured difference, "Current limit" error is generated.
++
++Current difference is separated to two regions by the threshold value. Maximum current in Region 1 is calculated by the absolute difference, in Region 2 – by the relative difference.
++
++To change the overcurrent protection of the battery, select the "Protections → Discharge current limit" section:
++
++[[image:1735225942893-869.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="113" width="800"]]
++
++In this section:
++
++* Enable – a flag to enable the protection;
++* Threshold to switch from Region 1 to Region 2 – a current value at which current excess calculation will be switched from absolute to relative difference, A;
++* Region 1: Current difference – a value of maximum absolute current difference, A;
++* Region 2: Current difference – a value of maximum relative current excess, A;
++* Delay before setting the error, millisecond;
++* Delay before clearing the error, second;
++* Lock – a flag to block the error until the device is restarted.
++
  === Undervoltage ===
  The BMS Main 3 device implements battery protection from too low voltage on the cells.
@@ -48,7 +48,7 @@
  To change the battery protection parameters from low voltage on the cells, select the "Protections → Undervoltage" section:
--[[image:1733328382380-760.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="127" width="800"]]
++[[image:1735224224155-829.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="112" width="800"]]
  In this section:
@@ -55,6 +55,7 @@
  * Enable – a flag to enable the protection;
  * Minimum cell voltage, V;
  * Tolerant cell voltage, V;
++* Check the open circuit voltage instead of the actual voltage – a flag to use the U,,ocv,, (corrected due to current and cell resistance) cell voltage;
  * Delay before setting the error, millisecond;
  * Delay before clearing the error, second;
  * Lock – a flag to block the error until the device is restarted.
@@ -69,11 +69,6 @@
  * the minimum voltage among all cells of the battery is greater than the “Tolerant cell voltage” value for the “Delay before clearing the error” time.
--(% class="box infomessage" %)
--(((
--If there is the "Undervoltage" error, the **discharging **contactor opens.
--)))
--
  === Overvoltage ===
  The BMS Main 3 device implements battery protection from too high voltage on the cells.
@@ -80,7 +80,7 @@
  To change the battery protection parameters from high voltage on the cells, select the "Protections → Overvoltage" section:
--[[image:1733328382382-607.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
++[[image:1735224377252-473.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="114" width="800"]]
  In this section:
@@ -87,9 +87,9 @@
  * Enable – a flag to enable the protection;
  * Maximum cell voltage, V;
  * Tolerant cell voltage, V;
++* Check the open circuit voltage instead of the actual voltage – a flag to use the U,,ocv,, (corrected due to current and cell resistance) cell voltage;
  * Delay before setting the error, millisecond;
  * Delay before clearing the error, second;
--* Switch off the discharging contactor on error – a flag to open the discharging contactor when the "Overvoltage" error is generated;
  * Lock – a flag to block the error until the device is restarted.
  As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
@@ -102,11 +102,6 @@
  * the maximum voltage among all cells of the battery is less than the “Tolerant cell voltage” value for the “Delay before clearing the error” time.
--(% class="box infomessage" %)
--(((
--If there is the "Overvoltage" error, the **charging** contactor and **discharging **contactor open (if the “Switch off the discharging contactor on error” flag is set).
--)))
--
  === Low temperature ===
  The BMS Main 3 device implements battery protection from too low temperature.
@@ -136,12 +136,6 @@
  * the minimum temperature among all cells of the battery is greater than the “Tolerant charging (discharging) temperature” value for the “Delay before clearing the error” time.
--(% class="box infomessage" %)
--(((
--If there is the "Low temperature (CH)" error, the **charging **contactor opens.
--If there is the "Low temperature (DCH)" error, the **discharging **contactor opens.
--)))
--
  === High temperature ===
  The BMS Main 3 device implements battery protection from too high temperature.
@@ -171,12 +171,6 @@
  * the maximum temperature among all cells of the battery is less than the “Tolerant charging (discharging) temperature” value for the “Delay before clearing the error” time.
--(% class="box infomessage" %)
--(((
--If there is the "High temperature (CH)" error, the **charging **contactor opens.
--If there is the "High temperature (DCH)" error, the **discharging **contactor opens.
--)))
--
  === Battery cover ===
  To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
@@ -202,7 +202,7 @@
  (% class="box warningmessage" %)
  (((
--If there is the "Battery cover error", the **“Critical error” **is generated **and all contactors open.**
++If there is the "Battery cover error", the **“Critical error” **is generated**.**
  )))
  === High humidity ===
@@ -264,12 +264,12 @@
  * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
--(% class="box infomessage" %)
++(% class="box warningmessage" %)
  (((
--If there is the “Water” error, the **“Critical error”** is generated and **all relays open**.
++If there is the “Water” error, the **“Critical error”** is generated.
  )))
--=== High Logic temperature ===
++=== Logic high temperature ===
  To change the overheating protection parameters of BMS Logic devices, select the "Protections →  High Logic temperature" section:
@@ -294,9 +294,9 @@
  * a BMS Logic device temperature is less than the “Tolerant temperature” value.
--(% class="box warningmessage" %)
++(% class="box infomessage" %)
  (((
--Overheated Logic devices do not balance cells.
++Cell balancing is disabled on Logic devices with high temperature.
  )))
  === Logic offline ===
@@ -322,7 +322,7 @@
  (% class="box warningmessage" %)
  (((
--If there is the "Logic offline" error, the **“Critical error” **is generated and **all relays open.**
++If there is the "Logic offline" error, the **“Critical error” **is generated**.**
  )))
  === Cell count ===
@@ -351,7 +351,7 @@
  (% class="box warningmessage" %)
  (((
--If there is the "Cell count error", the **“Critical error” **is generated and **all relays open.**
++If there is the "Cell count error", the **“Critical error” **is generated**.**
  )))
  === Logic count ===
@@ -379,7 +379,7 @@
  (% class="box warningmessage" %)
  (((
--If there is the "Logic count error", the **“Critical error”** is generated and **all relays open.**
++If there is the "Logic count error", the **“Critical error”** is generated.
  )))
  === Short circuit ===
@@ -388,7 +388,7 @@
  To change the protection parameters from short circuit, select the "Protections → Short circuit" section:
--[[image:1733328415733-309.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="210" width="800"]]
++[[image:1735224667621-969.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="153" width="800"]]
  In this section:
@@ -396,8 +396,6 @@
  ** Enable – a flag to enable the protection;
  ** Maximum current, A;
  ** Delay before setting the error, second;
--* Switch off the charging contactor on error – a flag to open the charging contactor when the "Short circuit" error occurs;
--* Switch off the discharging contactor on error – a flag to open the discharging contactor when the "Short circuit" error occurs;
  * Delay before clearing the error, second;
  * Lock – a flag to block the error until the device is restarted.
@@ -411,11 +411,6 @@
  * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
--(% class="box infomessage" %)
--(((
--If there is the "Short circuit" error, **charging **contactor opens (if the “Switch off the charging contactor on error” flag is set) and **discharging **contactor opens (if the “Switch off the discharging contactor on error flag” is set).
--)))
--
  === High contactor temperature ===
  The BMS Main 3 device protects power contactors from overheating. To measure the temperature of the contactor, one of the thermistors connected to the X5 connector is used.
@@ -422,7 +422,7 @@
  To change the overheating protection parameters of power contactors, select the "Protections → High contactor temperature" section:
--[[image:1733328415734-986.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
++[[image:1735224706573-347.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="112" width="800"]]
  In this section:
@@ -431,8 +431,6 @@
  * Maximum contactor temperature, °C;
  * Tolerant contactor temperature, °C;
  * Delay before setting the error, second;
--* Switch off the charging contactor on error – a flag to open the charging contactor when the "High contactor temperature" error occurs;
--* Switch off the discharging contactor on error – a flag to open the discharging contactor when the "High contactor temperature" error occurs;
  * Delay before clearing the error, second;
  * Lock – a flag to block the error until the device is restarted.
@@ -446,11 +446,6 @@
  * the contactor temperature is lower than the “Tolerant contactor temperature” value during the “Delay before clearing the error” time.
--(% class="box infomessage" %)
--(((
--If there is the "High contactor temperature" error, **charging **contactor opens (if the “Switch off the charging contactor on error” flag is set) and **discharging **contactor opens (if the “Switch off the discharging contactor on error” flag is set).
--)))
--
  === Current sensor ===
  The BMS Main 3 device checks the current sensor connection circuits. The circuits are checked for breakage and short-circuit to the +5 V supply line.
@@ -482,7 +482,7 @@
  (% class="box warningmessage" %)
  (((
--If there is the “Current sensor error”, the **“Critical error” **is generated and **all relays open.**
++If there is the “Current sensor error”, the **“Critical error” **is generated.
  )))
  === Power switch ===
@@ -500,9 +500,39 @@
  (% class="box warningmessage" %)
  (((
--If there is the "Power switch error", the **“Critical error” **is generated and **all relays open.**
++If there is the "Power switch error", the **“Critical error” **is generated.
  )))
++=== Power fault ===
++
++BMS Main 3 device checks the status of CAN2, CAN3, RS-485-2 and Current sensors power supply.
++
++(% class="box infomessage" %)
++(((
++**Note:** this error can be configured only under** "Service" account**.
++)))
++
++To change the parameters of the power fault error, select the "Protections → Power fault" section:
++
++[[image:1739284154410-676.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="96" width="800"]]
++
++In this section:
++
++* Enable – a flag to enable the protection;
++* Delay before setting the error, millisecond;
++* Time to keep power off, millisecond;
++* Delay before clearing the error, millisecond;
++* Lock – a flag to block the error until the device is restarted.
++
++The “Power fault” occurs when the device detects a shortage or high power consumption in power supplies mentioned above. After that BMS turns off the corresponding power supply for "Time to keep power off", then it tries to enable power again.
++
++Error is removed when the power consumption is normal during “Delay before clearing the error” time.
++
++(% class="box warningmessage" %)
++(((
++If there is the "Power fault", the **“Critical error” **is generated.
++)))
++
  === Charge contactor cycles ===
  The BMS Main 3 device protects the charging contactor against frequent switching.
@@ -530,11 +530,6 @@
  * the “Delay before clearing the error” time has passed since the error was generated.
--(% class="box infomessage" %)
--(((
--If there is the "CH contactor cycles error" error, the **charging **contactor opens.
--)))
--
  === Discharge contactor cycles ===
  The BMS Main 3 device protects the discharging contactor against frequent switching.
@@ -562,11 +562,6 @@
  * the “Delay before clearing the error” time has passed since the error was generated.
--(% class="box infomessage" %)
--(((
--If there is the "DCH contactor cycles error" error, the **discharging **contactor opens.
--)))
--
  === Temperature sensors ===
  The BMS Main 3 device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
@@ -586,7 +586,7 @@
  (% class="box warningmessage" %)
  (((
--If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error”** is generated and **all relays open.**
++If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error”** is generated.
  )))
  === WDT reset ===
@@ -609,10 +609,10 @@
  (% class="box warningmessage" %)
  (((
--If there is the "WDT reset" error, the **“Critical error” **is generated and **all relays open.**
++If there is the "WDT reset" error, the **“Critical error” **is generated.
  )))
--=== Unallowable charging ===
++=== Unallowable charging ===
  The BMS can detect that the battery is charging through the discharging circuit and protectively open the discharging contactor to prevent unallowable battery operation.
@@ -637,13 +637,8 @@
  * the battery current is zero during the “Delay before clearing the error” time.
--(% class="box infomessage" %)
--(((
--If there is the "Unallowable charging" error, the **discharging **contactor opens.
--)))
++=== Stuck contactor ===
--=== Stuck contactor ===
--
  The BMS Main 3 device protects contactors against sticking.
  To change the protection parameters against sticking, select the "Protections → Stuck contactor" section:
@@ -665,7 +665,7 @@
  (% class="box warningmessage" %)
  (((
--If there is the “Stuck contactor” error, the **“Critical error” **is generated and **all relays open.**
++If there is the “Stuck contactor” error, the **“Critical error” **is generated.
  )))
  === Contactor feedback ===
@@ -689,33 +689,11 @@
  (% class="box warningmessage" %)
  (((
--If there is the “Contactor feedback” error, the **“Critical error” **is generated and **all relays open.**
++If there is the “Contactor feedback” error, the **“Critical error” **is generated.
  )))
--=== Precharge ===
++=== Insulation ===
--BMS Main 3 device detects errors while pre-charging the load capacity by monitoring the current and voltage difference before and after contactors. To change the pre-charge monitoring parameters, select the "Protections → Precharge" section:
--
--[[image:1733328487097-648.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="99" width="800"]]
--
--In this section:
--
--* Enable – a flag to enable the protection;
--* Delay before setting the error, millisecond;
--* Delay before clearing the error, second;
--* Lock – a flag to block the error until the device is restarted.
--
--As a result of the protection algorithms the “Precharge error” is generated. Error generation conditions:
--
--* precharging process cannot be finished (the precharge current does not decrease or voltages before and after contactors are not equal) during the “Delay before setting the error” time.
--
--(% class="box infomessage" %)
--(((
--If there is the “Precharge error”, **charging **and **discharging **contactors open.
--)))
--
--=== Insulation ===
--
  The BMS Main 3 device can detect a physical signal or CAN bus message from an external insulation monitoring device (such as Bender IR155, iso165C, BMD IMD) to monitor the insulation quality.
  To change the insulation monitoring parameters, select the "Protections → Insulation" section:
@@ -737,7 +737,7 @@
  (% class="box warningmessage" %)
  (((
--If there is the “Insulation fault”, the **“Critical error”** is generated and **all relays open.**
++If there is the “Insulation fault”, the **“Critical error”** is generated.
  )))
  === HVIL ===
@@ -746,22 +746,30 @@
  To change the HVIL measurement parameters, select the "Protections → HVIL" section:
--[[image:1733328487099-371.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="85" width="800"]]
++[[image:1735224839441-185.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
  In this section:
  * Enable – a flag to enable the protection;
++* Source is OFF: Lower current limit, A;
++* Source is OFF: Upper current limit, A;
++* Source is ON: Lower current limit, A;
++* Source is ON: Upper current limit, A;
  * Lock – a flag to block the error until the device is restarted.
--If interlock loop breaks, the “HVIL error” is generated. Error clears if interlock loop is being restored.
++If interlock loop breaks and its current is out of the configured ranges, the “HVIL error” is generated.
++Error clears if interlock loop is being restored.
++
  (% class="box warningmessage" %)
  (((
--If there is the “HVIL error”, the **“Critical error”** is generated and **all relays open.**
++If there is the “HVIL error”, the **“Critical error”** is generated.
  )))
  === Critical error ===
++Some of the errors are system critical. A separate signal named "Critical error" indicates a BMS fault.
++
  To change the critical error parameters, select the "Protections → Critical error" section:
  [[image:1733328487100-898.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="101" width="800"]]
@@ -773,43 +773,15 @@
  * Delay before clearing the error, second;
  * Lock – a flag to block the error until the device is restarted.
--The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
++The "Critical error" signal is generated if at least one of the critical errors (see [[Errors>>doc:Battery management systems.Additional information.1\. Battery controllers\: signals and errors.WebHome||anchor="HErrors"]]) is generated during the “Delay before setting the error” time.
--* “Battery cover error”;
--* “Water”;
--* “Logic offline”;
--* “Cell count error”;
--* “ADC error”;
--* “Current sensor error”;
--* “Shunt offline”;
--* “Shunt error”;
--* “WDT reset”
--* “No temp. sensors”;
--* “Temperature sensor shorted”;
--* “Stuck contactor”;
--* “CH contactor feedback error”;
--* “DCH contactor feedback error”;
--* “Insulation fault”;
--* “PCH contactor feedback error”;
--* “CH/DCH contactor feedback error”;
--* “Main contactor feedback error”;
--* “High voltage fault”;
--* “Power switch error”;
--* “HVIL error”l
--* “Power fault”.
++The “Critical error" signal is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
--The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
++=== General error ===
--(% class="box infomessage" %)
--(((
--If there is the “Critical error”, **all **contactors open.
--)))
--
--=== General error ===
--
  To change the general error parameters, select the "Protections → Critical error" section:
--[[image:1733328487101-216.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="262" width="800"]]
++[[image:1735224942262-497.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
  In this section:
@@ -817,13 +817,13 @@
  * Delay before setting the error, millisecond;
  * Delay before clearing the error, second;
  * Lock – a flag to block the error until the device is restarted;
--* Check: <error> – a flags to enable check of corresponding errors.
++* Errors 1, 2 to set the "Critical error" – bitfields to enable check of corresponding errors.
--The general error flag is generated if at least one of the enabled errors is generated during the “Delay before setting the error” time.
++The “General error”is generated if at least one of the enabled errors is generated during the “Delay before setting the error” time.
  The “General error” is cleared if there are no errors from the enabled errors during the “Delay before clearing the error” time.
  (% class="box infomessage" %)
  (((
--The state of the “General error” can be output to a discrete output or a power switch.
++The state of the “General error” can be assigned to a discrete output or to a power switch.
  )))

1735224224155-829.png

Author

...	...	@@ -1,0 +1,1 @@
	1	+XWiki.admin

Size

...	...	@@ -1,0 +1,1 @@
	1	+23.4 KB

Content

1735224377252-473.png

Author

...	...	@@ -1,0 +1,1 @@
	1	+XWiki.admin

Size

...	...	@@ -1,0 +1,1 @@
	1	+23.4 KB

Content

1735224601506-488.png

Author

...	...	@@ -1,0 +1,1 @@
	1	+XWiki.admin

Size

...	...	@@ -1,0 +1,1 @@
	1	+24.6 KB

Content

1735224667621-969.png

Author

...	...	@@ -1,0 +1,1 @@
	1	+XWiki.admin

Size

...	...	@@ -1,0 +1,1 @@
	1	+32.8 KB

Content

1735224706573-347.png

Author

...	...	@@ -1,0 +1,1 @@
	1	+XWiki.admin

Size

...	...	@@ -1,0 +1,1 @@
	1	+22.1 KB

Content

1735224839441-185.png

Author

...	...	@@ -1,0 +1,1 @@
	1	+XWiki.admin

Size

...	...	@@ -1,0 +1,1 @@
	1	+20.1 KB

Content

1735224942262-497.png

Author

...	...	@@ -1,0 +1,1 @@
	1	+XWiki.admin

Size

...	...	@@ -1,0 +1,1 @@
	1	+19.9 KB

Content

1735225207687-430.png

Author

...	...	@@ -1,0 +1,1 @@
	1	+XWiki.admin

Size

...	...	@@ -1,0 +1,1 @@
	1	+23.0 KB

Content

1735225942893-869.png

Author

...	...	@@ -1,0 +1,1 @@
	1	+XWiki.admin

Size

...	...	@@ -1,0 +1,1 @@
	1	+23.1 KB

Content

1739284154410-676.png

Author

...	...	@@ -1,0 +1,1 @@
	1	+XWiki.admin

Size

...	...	@@ -1,0 +1,1 @@
	1	+20.4 KB

Content

Changes for page 3.4 Protections

Summary

Details

Applications

Navigation

Table of Contents