ABB UAD154A After sales service is provided for the control card of the power supply device

Description

PanelView Standard terminal is the same as the UAD154A non redundant system
·PanelView Plus terminal
·Running Windows CE operating system
VersaView Industrial Computer
·UAD154A uses RSLinx version 3.0 or higher
Enterprise software.
·For each PanelView Plus or
The VersaView CE terminal is reserved for connection.
RSView with RSLinx Enterprise software
Supervisory Edition
·Use RSLinx 3.0 or higher
Enterprise software.
·Use IP exchange.
·Keep HMI and two redundant racks on the same subnet
Medium.

·UAD154A RSView with RSLinx 2. x software
Supervisory Edition software
·RSView 32 software
·Any other HMI customer using RSLinx 2. x software
Client software
Limit the number of RSLinx servers used by a controller
It is controlled from 1 (ideal value) to 3 (maximum value).
ControlNet · PanelView Standard Terminal
·PanelView 1000e/1400e terminal
Does the UAD154A terminal use unscheduled communication?
·Yes – ≤ 4 terminals per controller.
·No – Use the appropriate number of terminals as needed.

·PanelView Plus terminal
·Running Windows CE operating system
VersaView Industrial Computer
For each PanelView Plus or VersaView CE
The terminal shall be connected.
·RSView Supervisory Edition software
·RSView 32 software
·Any other HMI customer using RSLinx 2. x software
Client software
Limit the number of RSLinx servers used by a controller
It is controlled from 1 (ideal value) to 3 (maximum value).

Packaging details: if you need an urgent delivery order, please feel free to contact us, and we will do our best to meet your needs.

Price problem: if you find that other suppliers offer cheaper prices for the same product, we are also willing to provide you with reference prices and give you further discounts.

In the case of direct connection (diagrams 1 and 2) there is a risk that after
disconnection of the supply, the motor will continue to rotate (residual kinetic
energy) and self-excite with the reactive energy supplied by the capacitor bank,
acting as an asynchronous generator. In this case, the voltage is maintained on
the load side of the switching and control device, with the risk of dangerous
overvoltages of up to twice the rated voltage value.
However, in the case of diagram 3, to avoid the risk detailed above, the normal
procedure is to connect the PFC bank to the motor only when it is running, and
to disconnect it before the disconnection of the motor supply.
As a general rule, for a motor with power Pr
, it is advisable to use a PFC with
reactive power Qc
below 90% of the reactive power absorbed by the no-load
motor Q0
, at rated voltage Ur
, to avoid a leading power factor.
Considering that under no-load conditions, the current absorbed I0 [A] is solely
reactive, if the voltage is expressed in volts, it results:
The current I0 is generally given in the documentation supplied by the
manufacturer of the motor.

For a three-phase asynchronous motor, 110 kW (400 V – 50 Hz – 4 poles), the
PFC power suggested in the table is 30 kvar.
Individual power factor correction of three-phase transformers
A transformer is an electrical device of primary importance which, due to the
system requirements, is often constantly in service.
In particular, in installations constituted by several transformer substations, it is
advisable to carry out power factor correction directly at the transformer.
In general, the PFC power (Qc
) for a transformer with rated power Sr
[kVA]
should not exceed the reactive power required under minimum reference load
conditions.
Reading the data from the transformer nameplate, the percentage value of
the no-load current i0
%, the percentage value of the short-circuit voltage uk
%,
the iron losses Pfe and the copper losses Pcu [kW], the PFC power required is
approximately:
where KL
is the load factor, defined as the relationship between the minimum
reference load and the rated power of the transformer.
Example
Supposing the need for PFC of a 630 kVA oil-distribution transformer which
supplies a load which is less than 60% of its rated power.
From the data on the transformer nameplate:
i
0
% = 1.8%
uk
% = 4%
Pcu = 8.9 kW
Pfe = 1.2 kW