ABB REF542PLUS control and protection unit
The REF542plus housing for the Central Unit is made from sheet aluminium. Its exterior is chromatized both to protect the housing against corrosion and to gain the shielding against EMC disturbances. The Central Unit allows a safe integration into a switchboard.A standard and a wide case version, as shown in the following figures are available. In the standard case version, two binary I/O boards and an optional communications board can be used. The wide case version contains an additional binary I/O board and the analog output board. Example of REF542plus base version with one mechanical binary I/O version 3 (BIO3).Extension up to two additional mechanical binary I/O version 3 (BIO3) possible. Other configurations of the analog input board available, e.g. mixed configuration for input transformers and sensors connection.
ABB REF542PLUS control and protection unit
ABB REF542PLUS control and protection unit
REF542plus can have at most 8 analog input channels. They can be from instrument transformers of from non-conventional sensors. Also mixed combinations are possible,with some inputs from instrument transformers and others from sensors. The table below lists all the supported combinations.CT (EF) is a special input transformer to measure the earth fault current in isolated or with Petersen coil compensated system by means of cable current transformer. For the setting of the related analog input the primary nominal current of the cable current transformer must be divided by 5.The connections to the Compel connectors for the analog input board are shown in the next following figures. The connection of AI07 and AI08 can principally be derived,depending on the input transformer used.
ABB REF542PLUS control and protection unit
ABB REF542PLUS control and protection unit
The left half of the LCD display is reserved for the Single Line diagram. The right half is used to display the appropriate menu or submenu as determined by the user. Two different electronic keys with different access rights are available. Each of the keys are programmed to permit either:protection functions parameterization of the mode selection of the control functions Three freely programmable LED bars have been provided on the front of the HMI Control
Unit. Each LED bar consists of ten green and two red LEDs and is user configurable to display any required measurement value. The red LEDs are used to indicate values above the rated value.The functions of the REF542plus can be tailored to the system requirements via a userspecific configuration. The user-specific configuration is loaded during commissioning.For that purpose the configuration computer, normally a personal computer (notebook) running Windows NT, is connected to the optical interface on the front side of the HMI Control Unit.
ABB REF542PLUS control and protection unit pdf
The HMI Control Unit, as shown in figure 5, features a back-illuminated Liquid Crystal Display (LCD), eight push buttons, several LEDs and an electronic key interface. The language of the display can be selected via the related configuration software tool, which
is also used to define the protection and the control scheme.
ABB REF542PLUS control and protection unit
♦…♦♦…♦♦…♦♦…♦♦…♦♦…♦♦…♦♦…♦♦…♦♦…♦♦…♦♦…♦♦…♦♦…♦♦…♦♦…♦♦…♦♦…♦♦…♦♦…♦♦…♦♦…♦♦…♦
Shipping:
1. Your item will be shipped to all countries via EMS, unless one country cannot be shipped via EMS. We will choose DHL, UPS, or FedEx. Please leave us your phone number.
2. We will ship the product to you on the same day or within 1-2 working days after receiving your payment. The shipping time depends on the country/region where you reside, the customs and habits of your country/region, and especially during peak hours.
3. Assuming (assuming) that the item requires payment of tariffs from your country, the buyer is obligated. We are not responsible for any taxes or customs fees in your country/region.
Return Policy:
1. Please contact us before returning the item.
2. The buyer should inform the seller of all returned items within 7 days after receiving the package. We reserve the right to reject any request to inform the seller for more than 7 days.
3. Returned products must have all original packaging and be in good condition.
Response policy:
If you are satisfied with the purchase, please leave us an active response.
2. If you have any questions about the outcome of the transaction or product, please contact us first and we will do our best to satisfy you!
3. Please do not reply with negative feedback before contacting us!
Related models:
500MBA02 1MRB150003R0003 1MRB200053-M
500CSP04
There are no reviews yet.