PFC-FT2-ST

The Ultimate real-time dynamic reactive power compensation system for medium and low voltage motor startups.

EXCLUSIVE TECHNOLOGY

• Cost-effective fast reactive power compensation
• Improves the overall power quality of the electrical network
• Designed to limit voltage drop to local standards
• Transient free switching
• Centralized motor startup compensation solution

PFC-FT2-ST - SYSTEM OVERVIEW

The PFC-FT2-ST is a real time, dynamic reactive power compensation system that utilizes a proven industrial technology to provide an additional solution for the challenges related to large motor startups.

THE ELECTRICAL CHALLENGE

A motor start demands very high reactive power for a relatively short period of time. This demand creates typical reactive currents of 6-7 times the nominal current of the motor, consequently a voltage drop is developed in the local network that is usually not designed to withstand these temporary high currents. This voltage drop can create problems for other loads in the network and, if excessive, can prevent the motor from starting.

THE ULTIMATE SOLUTION

Cost effective and fast reactive power compensation with the PFC-FT2-ST.

PFC-FT2-ST - SYSTEM COMPARISON

This example demonstrates the results of a 5MW motor supplied by an 11.5kV electrical network supported by a 15MVA transformer. The charts to follow represent the actual measurement data:

	Direct Online	Soft	PFC-FT2-ST 32MVAr	PFC-FT2-ST 12MVAr	Combination Soft Starter + PFC-FT2-ST 12MVAr
Startup time	6.9 sec	11.1 sec	5.1 sec	6.2 sec	9.5 sec
Voltage Drop	-14.5%	-12.0%	-2.5%	-10.0%	-6%
Startup Current (Typical Values)	100%	60-80%	50-60%	70-80%	30-50%
THDv	<2%	10%	<1%	<1%	6%
THDi	<2%	19%	<1%	<1%	20%

• The PFC-FT2-ST does not increase the harmonic level for the voltage and the current (in most cases, the harmonics levels are improved).
• The voltage drop caused by reactive energy demand could be completely eliminated using PFC-FT2-ST, however due to cost considerations, a compromise should be considered.
• The startup period is minimized using the PFC-FT2-ST solution, thus avoiding unnecessary wear to the motor and increasing the motor's life expectancy.
• A low level of starting current occur when employing the PFC-FT2-ST solution.
• During startup, the cleanest sinusoidal waveforms are achieved via use of the PFC-FT2-ST solution.
• The complete cost of the PFC-FT2-ST in Medium Voltage applications, including the additional transformer and protection accessories, is less expensive than a soft starter solution in many operating scenarios (especially when more than one motor is used).

Specification Table
Low Voltage System which is designed to control the reactive energy at MV using a boosting transformer	Primary: 690 Volt (typically) Secondary: Up to 66KV
Start-up Time	Up to 30 seconds
Duty Cycle	5%
Ambient Temperature Limits	-10° С up to 40" С
Capacitors	Low loss, self healing IEC 831-1/2
Protection Class	IP 20/NEMA 1 (Others on Request)
Design	Sheet Steel Cabinet
Enclosure Finish	Epoxy powder coated gray (RAL 7032)
Internal Parts	Rust-proof alu-zinc
EMC Standards	EN 50081 -2 EN 61000-4-2/3/4/5 EN 50082-2 ENV 50204 EN 55011 ENV 50141
Safety Standards	EN 61010-1, EN 60439, UL 508 (on request)

Dimensions

Dimensions (WxHxD mm):
1.5-2.3 MVAr	1816x2120x940 мм
2.5 - 4.6 MVAr	2821 x 2120x940 мм
4.6-6.9 MVAr	4637 x 2120 x 940 мм
6.9-9.2 MVAr	5642 x2120 x940 мм
9.2-11.5 MVAr	7458 x2120 x940 мм
11.5-13.8 MVAr	8463 x 2120 x 940 мм
13.8-18.4 MVAr	11284 x 2120 x 940 мм