Delta PQC Series User manual

Delta PQC Series
Active Power Filter
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www.deltapowersolutions.com
User Manual

II
PQC Series Active Power Filter
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This manual contains important instructions and warnings that you should follow
during the installation, operation, storage and maintenance of this product. Failure
to heed these instructions and warnings will void the warranty.
Copyright © 2015 by Delta Electronics Inc. All Rights Reserved. All rights of this User Manual
(“Manual”), including but not limited to the contents, information, and figures are solely owned and
reserved by Delta Electronics Inc. (“Delta”). The Manual can only be applied to the operation or the
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extraction, or usage of this Manual in whole or in part is prohibited without the prior written permission
of Delta. Given that Delta will continuously improve and develop the product, changes may be made
to the information in this Manual at any time without obligation to notify any person of such revision
or changes. Delta will make all possible efforts to secure the accuracy and the integrity of this
Manual. Delta disclaims any kinds or forms of warranty, guarantee, or undertaking, either expressly
or implicitly, including but not limited to the completeness, faultlessness, accuracy, non-infringement,
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III
Table of Contents
Table of Contents
Chapter 1 : Important Safety Instructions ------------------------------------------1
1.1. Safety Precautions------------------------------------------------------------------ 1
1.2. Wiring Warnings --------------------------------------------------------------------- 1
1.3. Usage Warnings--------------------------------------------------------------------- 2
1.4. Storage Precautions---------------------------------------------------------------- 2
1.5. Symbols-------------------------------------------------------------------------------- 3
Chapter 2 : Introduction ------------------------------------------------------------------4
2.1 Product Introduction ---------------------------------------------------------------- 4
2.2 APF Series Product Category---------------------------------------------------- 5
2.3 Functions & Features--------------------------------------------------------------- 8
2.4 Mechanism & Appearance-------------------------------------------------------10
2.4.1 Appearance & Dimensions of the Cabinet System------------10
2.4.2 Appearance & Dimensions of the Embedded System--------11
2.4.3 Control Panel------------------------------------------------------------13
2.4.4 Appearance & Dimensions of the Power Module--------------14
2.5 Package Inspection----------------------------------------------------------------16
Chapter 3 : Installation and Wiring--------------------------------------------------18
 3UHLQVWDOODWLRQ&RQ¿UPDWLRQ ----------------------------------------------------18
3.2 Installation Environment----------------------------------------------------------18
3.3 Cabinet System Structure & Wiring--------------------------------------------20
3.3.1 Cabinet System Structure--------------------------------------------20
3.3.2 Cabinet System Wiring -----------------------------------------------21
3.4 Embedded System Structure & Wiring----------------------------------------25
3.4.1 Embedded System Structure----------------------------------------25
3.4.2 LCM Module Structure------------------------------------------------26
3.4.3 Embedded System Wiring -------------------------------------------27
3.5 CT Installation & Wiring for Current Detection of Harmonic Source---32
3.5.1 CT Selection Precautions --------------------------------------------32
3.5.2 Basic CT Installation & Wiring --------------------------------------33

IV
PQC Series Active Power Filter
Chapter 4 : APF Operation Procedure ---------------------------------------------35
4.1 Checks Before Start-up-----------------------------------------------------------35
4.2 Start-up Procedures ---------------------------------------------------------------36
Chapter 5 : LCM Display and Settings ---------------------------------------------37
5.1 Description of LCD Display ------------------------------------------------------37
5.2 LCD Display Hierarchy------------------------------------------------------------38
Chapter 6 : Maintenance----------------------------------------------------------------39
Chapter 7 : Troubleshooting ----------------------------------------------------------40
Chapter 8 : Warranty---------------------------------------------------------------------41

1
Chapter 1 Safe Operation Instructions
Chapter 1 : Important Safety Instructions
1.1. Safety Precautions
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control harmonics, reactive power and imbalance correction. The APF shall be connected
with a grid system and in parallel with harmonic sources (i.e. nonlinear loads).
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yAdequate space shall be left in both front and rear of the APF for well ventilation and con-
venient maintenance.
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yTo minimize electric shock hazards, all maintenance work must be carried out by the
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yHigh voltage hazards! It takes over 15 minutes for the DC capacitor to discharge. Please
make sure the device has discharged completely before carrying out any operation.
yTo minimize electric shock hazards, please read this Manual carefully before switching
the power on, and keep this Manual properly for permanent reference.
yWhen the APF is used in IT applications, please install an insulation resistance detection
device so that the alarm will go off when protection earth fault is detected.
1.2. Wiring Warnings
yTo prevent a possible risk of current leakage, the APF shall be earthed properly. Please
use the suggested diameter of PE wire mentioned in Table 3-1 or use equivalent cross-
section area of cooper bar to perform earthing.
yWith regard to wiring, the compensation capacity and the current-carrying capacities of
cables shall be taken into account.
yThe incoming lines of the APF shall be connected with appropriate protective devices. It is
recommended to provide every module with an over-current protective device with a third-
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tion positions of auxiliary equipment into consideration and choose the protective device
with adequate breaking capacity.
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2
PQC Series Active Power Filter
yTo prevent scaling caused by high temperature, after the power is cut off, the operating
switch shall be allowed to cool down before being operated again.
yThe three-phase, four-wire APF is applicable to the power grid system with neutral
grounding.
1.3. Usage Warnings
ySince the APF is used for harmonic compensation of the power grid, the capacity selec-
tion of the APF shall be subject to the harmonic content to avoid poor compensation due
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ySince the APF is used for harmonic control, it shall be connected to harmonic current from
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yTo guarantee sound reliability and avoid overheating, do not block or cover the air inlet
and outlet.
yThe working temperature range of the APF is -10°C - 50°C, beyond which the APF will not
work.
1.4. Storage Precautions
yPlease use the original packing material to protect the APF in order to avoid damage by
rats.
yIf the customer will not install the APF immediately after receiving the equipment, please
be sure to store the APF in a dry and ventilated indoor place, which shall be maintained
between -40°C and 70°C with relative humidity no higher than 95%.

3
Chapter 2 Introduction
1.5. Symbols
Item Symbol Meaning
1RPhase R of three-phase power supply
2SPhase S of three-phase power supply
3TPhase T of three-phase power supply
4NNeutral line
5Main grounding terminal
6EPO key
7XT Terminal board
8QF Circuit breaker
9XK Auxiliary switch

4
PQC Series Active Power Filter
Chapter 2 : Introduction
2.1 Product Introduction
The Delta active power filter series ('APF'), a harmonic compensator for the three-phase
power grid, is applied to the harmonic control of the power grid. Features of the device are
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yRapid dynamic responses, stable parameters and good harmonic compensation results.
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yModular design offers a variety of coordination with various compensation capacities.
yThe module is hot-swappable, which is convenient for replacement and installation.
yThe system adopts an advanced 3-level structure and consists of digital signal proces-
sors (DSP), large programmable controllers and high power electronic devices, which has
excellent performance and superior reliability.
yProvides perfect system protection functions.
ySupports remote power on/ off functions via computer monitoring.
Please see the system block diagram in Fig. 2-1
.
The system is composed of modules and
a Cabinet System.The external CT is used for the detection of load current in the modules
and extraction of harmonic components, based on which, the main power controller controls
the main power circuit to generate reverse harmonic current; in this way, the load-carrying
harmonic components are counteracted. Each Cabinet System can be connected to up to 7
modules in parallel. The Cabinet System is equipped with a man-machine interface to display
the message of every module and manage the operation of every module.

5
Chapter 2 Introduction
(Fig. 2-1: System Block Diagram)
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2.2 APF Series Product Category
The Delta APF series products can be classified as cabinet systems, embedded systems
(containing embedded frames and power modules) and power modules. Optional accessories
include embedded frames and LCD modules. Table 2-1 lists the detailed products' series,
models, capacities and wiring modes.
Table 2-1 $3)3URGXFW6HULHV6SHFL¿FDWLRQV
Series Model Capacity System
Cabinet
system
PQCA-400-50-50DC3 (4) 50A Three-phase three-wire
/ four-wire
PQCA-400-75-75DC3 (4) 75A Three-phase three-wire
/ four-wire
PQCA-400-75-150DC3 (4) 150A Three-phase three-wire
/ four-wire
PQCA-400-75-225DC3 (4) 225A Three-phase three-wire
/ four-wire
PQCA-400-75-300DC3 (4) 300A Three-phase three-wire
/ four-wire
PQCA-400-75-375DC3 (4) 375A Three-phase three-wire
/ four-wire
PQCA-400-75-450DC3 (4) 450A Three-phase three-wire
/ four-wire

6
PQC Series Active Power Filter
Series Model Capacity System
Cabinet
system PQCA-400-75-525DC3 (4) 525A Three-phase three-wire / four-wire
Embedded frame PQC-Frame N/A N/A
Power module PQCA-400-50-50DM3(4) 50A Three-phase three-wire
/ four-wire
PQCA-400-75-75DM3(4) 75A Three-phase three-wire
/ four-wire
LCD module PQC-LCM-D N/A N/A
yDelta APF power module
The Delta APF power module is provided with plug-in design and can be simply plugged
into the standard cabinet system, embedded system and customized cabinet to form
a front-operated, pluggable module system. Subject to the customer's requirement of
equipment capacity, the APF power modules can be easily connected in parallel for
capacity expansion.
The Delta APF power module is available in two wiring modes, i.e. 3P3W and 3P4W,
and is available in two specifications in terms of the output current, i.e. 50A and 75A.
The 3P4W module shall be connected to the neutral line, and it is able to compensate
the current of neutral line, including zero sequence fundamental current and tertiary
current; however, for the 3P3W module, it is unnecessary to connect the neutral line, and
the module is unable to compensate the current of neutral line, such as zero sequence
fundamental current and tertiary current. Fig. 2-2 shows the Delta APF power module.