Marsh Electronics, Inc. - Item # PFC12, ESTAmat® Power Factor Controller
Search Catalog
By Keyword
By Item #
All Categories
ESTAmat® Power Factor Controller
|
Shipping
|
Tax
|
Terms
Shopping Cart
0 items
Request for Quote
0 items
All Categories
>
Manufacturers
>
Vishay
>
Heavy-Current Capacitors
>
Power Factor/Filter Controllers Capacitors
>
ESTAmat® Power Factor Controller
>
Item # PFC12
Printable Page
Email This Page
Save To Favorites
Item # PFC12 ESTAmat® Power Factor Controller
QUOTE
Email This Page
Save To Favorites
larger image
FUNCTIONS AND MODE OF OPERATION
The inductive reactive current required by induction motors for the three-phase magnetic field is an additional load on the power supply network, lines and switching devices. It also increases the expenditure for the energy to be paid to the Electrical Power Supply Utility, although the so-called reactive energy is, de facto, no real energy consumption. This inductive reactive current will be compensated by means of a Power Factor Controller with the related capacitor units.
The ESTAmat PFC Controller can be applied wherever automatic control of the power factor (cos Φ) is required. All functions of the ESTAmat PFC are controlled by a microprocessor. A protective device (watchdog) continuously monitors the processor to guarantee its faultless operation. There are no internal times or date functions.
The measurable variable current and voltage are conducted across a 50 Hz or 60 Hz (related to the fundamental frequency) band-pass filter. Thus harmonics existing in the network cannot affect the measurement process. Both measurement entries are potential free. The measuring voltage shall be in the range of 58 V to 690 V and may be optionally connected between phase to neutral or phase to phase. The current measuring range is 0.025 A to 5 A, and there is no need to differentiate between X/1A or X/5A current transformer.
A measuring cycle lasts 0.5 seconds. During this cycle, values are measured, all required parameters (such as power factor, current, and harmonic current) are calculated, and, if necessary, additional actions such as switching the steps and activating alarms.
By means of the 6 or the 12 relay contacts, as much capacitor steps as requested, of same or different size, can be controlled according to an optimized switching performance.
In case the actual power factor is lower than the target power factor, and the demand on reactive current for compensation exceeds 75% of the smallest capacitor step (measuring current ≥ 5 mA; 100% between 25 and 50 mA), the ESTAmat PFC is going to switch in the next step. Considering a possibly still valid re-switching blocking delay time, this switching is done after either an automatic and load depending or fixed preset switching delay time. When the switching in circular mode, as the standard setting, is applied, the ESTAmat PFC is anxious to distribute the total number of switching operations uniformly on all connected capacitor steps. Delay times for switching steps in or out can be either left automatic or preset as a fixed value, as it is done for the re-switching blocking delay time.
The ESTAmat PFC Controller is capable of determining, during the start-up procedure, the location of the current transformer as well as the output rating of the connected capacitor steps (i.e. the switching program) by means of test switchings.
Via an internal temperature sensor, when the Controller is mounted into a switch cabinet, there is the possibility of monitoring the cabinet's internal temperature. By setting limit values, an alarm function can be activated.
The setting via menu is done by means of the three keys on the front plate, which can be locked and thus protected against unauthorized modification.
By turning from automatic to manual operation, the automatic control is not effective during start-up procedure or for test purposes, i.e. capacitors may be switched in or out manually.
Moreover in case of circular switching mode, any number of same sized capacitor steps can be defined as fixed steps. One circular step, however, shall remain for the control operation.
The ESTAmat PFC is equipped with a serial interface RS232. By means of the computer all relevant measuring values and Power Factor Controller data can be requested. Furthermore, all Power Factor Controller's parameters can be modified via a computer. The computer software and the connection cable ESTAmat PFC to the computer are available at option.
Measuring Circuits
·
Control Circuit
·
Monitoring
·
Electrical Connection
·
Mechanical Details
Measuring Circuits
Voltage Range
58 to 690 V, Stepless
Current Range
25 mA to 5 A
Frequency
50 Hz
Input Filter
Each measuring circuit is provided with a band-pass filter
Voltage Connection
Phase to neutral
Phase to phase
Max. Current Power Input
1 V·A
Galvanic Separation
Potential-free connection with both measuring circuits
Current Continuous Overloading
20% maximum
Current Transformer
x/5A or x/1A, category 1
Precision U-I
1%
Precision Harmonic Current
The accuracy of harmonic current measurement is better than 90%
Control Circuit
No. of Steps
12 steps
6 steps
Switching Delay Time
A function of reactive load (2 to 500 seconds) or, settable to 10, 30, 60, 120, 180, 300 or 500 seconds
Re-Switching Blocking Delay Time
Settable to 20, 60, 180 or 300 seconds
Relay Contact Load-Bearing Capacity
5 A/265 VAC, the contact is bridged with a 47 nF anti-interference capacitor
Monitoring
Watchdog
Monitoring correct function of the processor
Temperature
Monitoring ambient temperature
Alarm Relay
Can be programmed with various alarm functions
Display
Showing symbols for the various types of faults
Harmonic Current
Alarm signal
No-Voltage Release
All capacitor steps will be switched out immediately upon interruption of supply voltage. Switching-in can take place only after the re-switching blocking delay has elapsed.
Electrical Connection
Operating Voltage
230 VAC ± 15%, 50 Hz (60 Hz and/or 120 VAC upon request)
Max. Power Input
8 W
Instrument Fuse
100 mA tr. 5 x 20 mm, inside the device
Connection
Via 20-pole (PFC12: an additional 6-pole) multipoint connectors, 2.5 mm
2
, rigid or flexible cable
Interface
RS232, 3-pole multipoint connector
Mechanical Details
Panel Cut-Out
138 x 138 mm
Approx. Depth
70 mm
Max. Weight
0.65 kg
Design
To EN 50178, protective class II, and EN 61010-1, CE - Certification: EN50081-2, EN61000-6-2
Type of Protection
IP 40 with multipoint connector mounted (IP 55 upon request: but only for the front side protected by a lockable controller cover, when controller is mounted in the cubicle door)
Ambient Operating Temperature
-25 up to +60 ºC
Position of Installation
At option
Products
|
Value Added Services
|
Industries
|
Vendor Managed Inventory
News
|
About Us
|
Contact Us
|
Privacy Policy
|
Terms and Conditions
E-news
|
RoHS Lead Free
Copyright Marsh Electronics, Inc. All Rights Reserved.
