UL certified instrument manufacturer direct sales

UL certified instrument manufacturer direct sales

UL certified instrument manufacturer direct salesThe APM520 multifunctional meter has functions such as full power measurement, power statistics, power quality analysis (including harmonics, interharmonics, flicker), fault waveform recording (including voltage temporary rise and fall interruption, impulse current recording, etc.), event recording, and network communication. It is mainly used for comprehensive monitoring of power supply quality in the power grid. This series of instruments is equipped with feature rich DI/DO modules, AO modules, wireless communication modules, and leakage temperature measurement modules, which can flexibly achieve full power measurement and opening of electrical circuits

Turn off status monitoring

Product model and function

Model Function

Function selection

Technical Specifications

2. Install wiring

2.1 Appearance and installation dimensions

Dimensions of instrument and panel openings (unit: mm (in))

Alarm instructions:

The instrument is equipped with two sets of alarms, each set of alarms can detect various alarm conditions, including changes in electrical parameter switch input, phase loss, reverse phase sequence, and unevenness

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Balance, harmonics, etc. The switch input changes and reverse phase sequence only require setting the enable position, while the rest of the alarms require setting alarm conditions.

Introduction to Alarm Types:

1. Electrical parameter alarm

Overcurrent: The zero value alarm setting is not applicable to overcurrent alarms. When the single-phase current is higher than or equal to the action value and meets the set action delay time, it will be activated

Dynamic single-phase overcurrent alarm; When the single-phase current is lower than the set recovery value and meets the delay time, the single-phase overcurrent alarm is released.

Undercurrent: When the single-phase current is lower than or equal to the action value and meets the set action delay time, the single-phase overcurrent alarm is activated; When the single-phase current is higher than

The single-phase overcurrent alarm is released when the set recovery value meets the delay time.

Note: When undercurrent is enabled and zero value alarm is enabled, the alarm is valid when the single-phase current is equal to 0; When undercurrent is enabled and zero value alarm is disabled,

When the single-phase current is equal to 0 at this time, the alarm is invalid.

2. Phase loss current alarm

When any current (not all currents) is equal to or lower than the action value and meets the delay time, a phase loss current alarm is generated; And when any of the following situations occur

At present, the alarm has been cleared:

The three-phase currents are all higher than the recovery value and meet the delay time requirements

The three-phase currents are all below the operating value of phase loss

3. Reverse phase sequence alarm: The action, recovery value, and delay value are not applicable to reverse phase sequence alarm. When the phase sequence is not ABC normal phase sequence, a reverse phase sequence alarm is generated

Police.

4. DI alarm: When the DI status changes from the initial state, an alarm is generated.

For example:

Enable the first set of alarm A phase overcurrent alarm.

Action value: This action value is a primary side value. For example, if the alarm value is set to 5.500A, the alarm condition will be triggered when the A-phase current value exceeds 5.500A

Trigger, start timing.

Action delay: When the alarm condition is triggered, if the A-phase current value consistently exceeds 5.500A, an alarm will be generated after the delay setting value (accurate to seconds)

Alarm record, record alarm group (Alarm 1), alarm type (A-phase overcurrent), alarm time (e.g. February 12, 2019 14:15:20), if DO is associated with this

Alarm, DO action (see DO settings for details).

Recovery value: This recovery value is the primary side value. For example, if the recovery value is set to 5.400A, after the A-phase overcurrent alarm has occurred, when the A-phase current

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When the value is below 5.400A, the alarm condition is released and the timer starts.

Recovery delay: When the alarm condition is lifted and triggered, if the current value of phase A remains below 5.400A, it will be triggered after the delay setting value (accurate to seconds)

Record the alarm release record, including the alarm group (Alarm 1), alarm type (A-phase overcurrent), and release time (e.g. February 12, 2019 14:17:20). If

If DO is associated with the alarm, DO will return to its original state. From this, the alarm duration can be calculated as 2 minutes.

Note: The alarm is invalid when both the action value and the recovery value are zero.

Note: For high alarm types, the recovery value must be less than the alarm value, and for low alarm types, the recovery value must be greater than the alarm value.

5.6 DO Settings

On the main interface, press Menu to enter the menu interface, press ∨ until "Parameter Settings" is highlighted, and press √ to enter the parameter settings interface.

Press ∨ until "DO Settings" is highlighted, press √ to enter the DO Settings interface. Press ∧ or ∨ to switch between DO settings, press Enter

Enter the settings of the project, press+or - to make changes, press>to shift. After the current setting is changed, press Exit to exit the project

settings Continue to repeat the above steps to modify the settings. After the change is completed, press the Exit pop-up to enter the password. The default password is 0001 (customers can follow the instructions)

6.11 Password setting for system settings. If you forget your password, please contact our company. Press Save to save changes and exit, press Esc not to

Save the modifications and exit directly.

5.7 AO Settings

On the main interface, press Menu to enter the menu interface, press ∨ until "Parameter Settings" is highlighted, and press √ to enter the parameter settings interface.

Press ∨ until "AO Settings" lights up, press √ to enter the AO Settings interface. Press ∧ or ∨ to switch between AO settings, press Enter,

Enter the settings of the project, press+or - to make changes, press>to shift. After the current setting is changed, press Exit to exit the project

settings Continue to repeat the above steps to modify the settings. After the change is completed, press the Exit pop-up to enter the password. The default password is 0001 (customers can follow the instructions)

6.11 Password setting for system settings. If you forget your password, please contact our company. Press Save to save changes and exit, press Esc not to

Save modifications and exit directly

5.8 Multiple Rate Setting

On the main interface, press Menu to enter the menu interface, press ∨ until "Parameter Settings" is highlighted, and press √ to enter the parameter settings interface.

Press ∨ until the "multiple rate setting" is displayed, press √ to enter the multiple rate setting interface. Press ∧ or ∨ to switch between items with multiple rate settings, press

Enter ， Enter the settings of the project, press+or - to make changes, press>to shift. After the current item settings are changed, press Exit to exit

Set up the project. Continue to repeat the above steps to modify the settings. After the change is completed, press the Exit pop-up to enter the password. The default password is 0001 (customer)

Users can change their password according to the system settings in 6.11. If they forget their password, they need to contact our company. Press Save to save changes and exit, press Esc

Then exit directly without saving the modifications.