Hitachi PQF Troubleshooting guide

Power Quality Filter PQF
Quick start-up guide

PREPARED
2022-09-06 Marie Pilliez
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APPROVED
DOCUMENT KIND
Manual
TITLE
Power Quality Filter PQFM
OWNING ORGANIZATION
Capacitors and Filters
DOCUMENT ID
9AKK107045A4703
REV.
D
LANG.
en
PAGE
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Contents
Components location ........................................................................................................................................ 4
1. Introduction to this manual ......................................................................................................................... 9
1.1. What this chapter contains .................................................................................................................. 9
1.2. Compatibility ........................................................................................................................................ 9
2. Safety Instructions ....................................................................................................................................... 9
3. Knowing your filter..................................................................................................................................... 10
3.1. Location of the main PQFI components ............................................................................................ 12
3.1.1. PQFI active filter bottom part components ........................................................................ 12
3.1.2. PQFI active filter middle part components......................................................................... 12
3.1.3. PQFI active filter top part components .............................................................................. 13
3.2. Location of the main PQFM components .......................................................................................... 13
3.3. Location of the main PQFS components........................................................................................... 13
3.4. The PQF main controller ................................................................................................................... 14
3.5. The PQF-Manager user interface...................................................................................................... 16
4. Upon reception ........................................................................................................................................... 19
4.1. Identification tag ................................................................................................................................ 21
4.2. Storage .............................................................................................................................................. 21
5. Quick start up ............................................................................................................................................. 22
5.1. Step 1: Visual and installation check ................................................................................................. 22
5.2. Step 2: Setting the address of each unit in a multi-unit filter and terminate the CAN bus ................. 23
5.3. Step 3: Voltage rating check/adaptation and phase rotation check................................................... 24
5.4. Step 4: Basic commissioning parameters set up (using PQF-Manager)........................................... 27
5.5. Step 5: Automatic and manual CT detection procedure .................................................................... 28
5.5.1. PQF connection diagram................................................................................................... 28
5.5.2. Automatic CT detection procedure .................................................................................... 29
5.5.3. Manual CT detection procedure ........................................................................................ 29
5.6. Step 6: Before starting the filter ......................................................................................................... 29
5.7. Step 7: Start the filter......................................................................................................................... 30
5.8. Step 8: Generate filter load................................................................................................................ 30
5.9. Step 9: Set up the user requirements................................................................................................ 31
5.10. Commissioning report........................................................................................................................ 33
5.10.1. Filter identification.............................................................................................................. 34
5.10.2. Inspection on site – verification of the active filter after installation................................... 35
5.10.3. Programming ..................................................................................................................... 36
5.10.4. Testing (with load).............................................................................................................. 37

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5.10.5. Programmed parameters................................................................................................... 38
5.10.6. Comments ......................................................................................................................... 40

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Components location
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1
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Figure 1
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3
1
4
Figure 2
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1
4
2
Figure 3
3
1
4
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Figure 4

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3
1
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Figure 5
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1
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Figure 6
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10
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1
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1
Figure 7

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Figure 8
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Figure 9
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Figure 10
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Figure 11

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Figure 12
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Figure 13

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Figure 14
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Figure 15

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1. Introduction to this manual
1.1. What this chapter contains
This quick start-up guide is intended to assist the users in installing and commissioning of PQF range of filters. This is
a simplified version of the detailed operation, installation and maintenance manual available in a CD-ROM supplied
with your filter. These detailed manuals are available in English only.
In case of trouble shooting or detailed information on any topic, please refer to the relevant topic/chapter from the
manual corresponding to your filter type.
1.2. Compatibility
The manual is compatible with all filters of PQF-range with color touchscreen PQF-Manager of the following versions
or higher.
– V1 : V26 r3001
– V2 : V11 r23
– V3 : V2 r0
– V4 : V0.1 r8
This product is not backward compatible with any other PQFx (x: A, B, L, T, I, M, K, S) filter product.
2. Safety Instructions
These safety instructions are intended for all work on the PQF. Neglecting these instructions can cause physical injury
and death. All electrical installation and maintenance work on the PQF should be carried out by qualified electricians.
Do not attempt to work on a powered PQF.
Before manipulating current transformers, make sure that the secondary is short-circuited. Never open the secondary
of a loaded current transformer.
You must always wear isolating gloves and eye-protection when working on electrical installations. Also make sure
that all local safety regulations are fulfilled.
DANGER: To ensure safe access, supplies to each individual enclosure must be isolated before entry/ open-
ing.
WARNING: This equipment contains capacitors that are connected between phase and earth. A leakage cur-
rent will flow during normal operation. Therefore, a good earth connection is essential and must be con-
nected before applying power to the filter.
WARNING: There are AC capacitors & DC capacitors connected inside this filter. Before performing any
maintenance work, please short and ground the three line terminals. The DC capacitor needs 25 minutes to
discharge after disconnection. Please wait for this duration before touching any live parts even after

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discharging the AC capacitors to avoid electrical shock. Never discharge DC capacitors through short circuit.
Always use a current limiting resistor of minimum 100Ω.
WARNING: To avoid electrical shock due to residual voltage on the capacitors, the left side cover of the filter
should not be removed once the filter is commissioned.
WARNING: If the ground is not done properly, under certain fault conditions in the unit or in the system to
which it is connected it can result in full line voltage between chassis and earth ground. Severe injury or
death can result if the chassis and earth are touched simultaneously.
WARNING: The neutral current in a PQFS filter may be as high as 3 times the line current hence do not use a
4 pole breaker to connect this type of filter as the rating of the neutral pole may not be adequate.
3. Knowing your filter
The PQF range of active filter is modular in design. It consist of mainly an IGBT based inverter (current generator)
and digital control system together with a user interface (PQF Manager). A simplified schematic with external connec-
tions to the PQF is described in the diagram below:
Compensation current
Current measurements
Non-linear load(s)
- Three-phase
- Single-phase
Supply
PQF Filter panel
PQF main
controller
PQF current
generator 1
PQF Manager
1
2
3
5
4
6
Figure 16: PQF schematic overview with user connections
The user connection description is given in Table 3.