ABB PIHF Harmonic Filters User Manual

1. Manual Introduction

This manual provides essential information for the installation, operation, and maintenance of PIHF Harmonic Filters.

2. Safety Instructions

The safety instructions necessary for the installation, operation, and maintenance of harmonic filter units are described in this chapter. Ignoring these safety instructions may result in personal injury or damage to filters, drives, motors, or other drive equipment. Please read this chapter carefully before operating the filter.

Safety of installation and maintenance

General safety instructions

Warning! All electrical installation and maintenance of harmonic filters shall be performed by qualified electrical engineers.

The harmonic filter and its connecting devices shall be grounded.

Never try any operation on the harmonic filter that has been powered on. After the power supply is cut off, the capacitor of the intermediate circuit shall be discharged for 5 minutes before operating the frequency converter, motor or motor cable. Before starting the operation, a voltage multimeter shall be used to check whether the incoming and outgoing terminals of the harmonic filter have been discharged.

Safety instructions for harmonic filters

1. PIHF harmonic filter is matched with the frequency converter, which can only be mounted at the power inlet of the frequency converter.
2. The power of the selected filter shall be matched with that of the frequency converter as far as possible, to obtain the best filtering effect. If not matched, the filter with the higher power can be used for that with the lower power, but the filtering effect may be reduced.
3. A single PIHF filter can be used to power multiple frequency converters, but the total load shall not exceed the rated power value of PIHF filter.
4. The reactor in the filter is a heat generating device. It shall be mounted to keep a heat dissipation space of at least 150mm around the filter. When two filters are mounted in parallel, the distance between the filters shall be at least 200mm.
5. The capacitor in the filter is a temperature-sensitive device, of which the ambient temperature shall be kept below 50 °C.
6. A reliable ground wire shall be connected for mounting according to the wiring instructions in the circuit diagram.
7. If the harmonic filter needs to be operated, first measure whether there is any residual dangerous voltage on the incoming and outgoing terminals of the filter.

Grounding

Warning! Ignoring the following instructions may cause personal injury or death, and increase electromagnetic interference and equipment damage.

In any case, the harmonic filter, drive and its connecting equipment shall be grounded to ensure personal safety and reduce electromagnetic radiation and interference.

The size of the grounding conductor shall meet the requirements of local safety regulations.

3. Guide on Installation and Debugging of Filters

The operating principle and structure of the harmonic filter are briefly described in this chapter.

Product overview

The harmonic filter is a low-pass filter that suppresses high-frequency harmonic currents on the input side of the drive. The figure below shows a drive system with harmonic filters.

Wiring diagram of single filter (1.5-250kW)

A schematic diagram shows the wiring of a single PIHF filter connected to an ACS Drive and a motor. The input terminals are labeled -T1, U1, V1, W1. The filter has terminals labeled -F1, U1, V1, W1, U2, V2, W2, -K1, and A1, A2, B1, B2, C1, C2. The output terminals U2, V2, W2 connect to the ACS Drives, which then connect to the motor M (3~).

Wiring diagram of parallel filters (250-400kW)

A schematic diagram shows the wiring of two PIHF filters connected in parallel to an ACS Drive and a motor. The input terminals of both filters are connected to the power supply side (-T1, U1, V1, W1). The output terminals (U2, V2, W2) of both filters are connected to the incoming line side of the frequency converter. Each filter has a contactor (-K1, -K2) connected to its control terminals (A1, A2, B1, B2, C1, C2).

1. The input terminals (U1,V1,W1) of the parallel filter are all connected to the power supply side, and the output terminals (U2,V2,W2) are all connected to the incoming line side of the frequency converter.

2. The over-temperature protection terminals of the parallel filter are connected in series before connection into the frequency converter.

3. Before connecting the contactor, A1-A2, B1-B2, and C1-C2 short-connected plates (short-connected for factory default ) shall be removed, and the rated current of the contactor shall be greater than Ifilter. It is recommended to use AC-3 contactors.

4. When connecting in parallel, the contactors with disconnected capacitors on each filter shall be allocated separately, and it is not allowed to share one contactor with several filters.

5. It is recommended that the cable length between the filter and the frequency converter should not be greater than 10 meters.

Electrical diagram

The figure below shows the electrical diagram of harmonic filters. It illustrates the input terminals U1, V1, W1 connected to inductors L1 and L2, with output terminals U2, V2, W2. Terminals A1, B1, C1 are connected to A2, B2, C2 respectively, and also to a capacitor C. The diagram indicates input and output connections.

Model label

The model label for PIHF-0030-4-10 shows ABB branding, product name, technical specifications like 400VAC, 30A, 50Hz, THDI < 10%, IP00, weight 48kg, origin China. It also includes a serial number and a breakdown of the model number format: PIHF-xxxx-x-xx, indicating Harmonic content (10=10%), Rated voltage (4=400V), Rated current (0004=4A), and Product (PIHF harmonic filter).

Mechanical installation

The protection degree of PIHF harmonic filter is IP00. The filter shall be installed in a suitable housing or cabinet to ensure safety. The filter adopts natural cooling. Please keep a heat dissipation space of at least 150mm around the filter. If the filters are installed in parallel, the installation distance between the filters shall be at least 200mm. There shall be enough fresh cooling air for use, and hot air can freely escape from the filter housing or cabinet.

Electrical connection

S1...S4 Terminal Connections:

S5...S6 Terminal Connections:

*For the use of bypassing the filter branch, after removing the short wiring of A1-A2, B1-B2, and C1-C2, the user selects the appropriate control contactor according to the Ifilter current value in the selection information.

*Overheating protection terminals T1- T2 can be connected to the frequency converter as overheating protection signals. In the normal state, it is normally closed. When the temperature limit of the overheat protection is reached, the state will turn to off.

Typical power cable specifications (copper) and wiring torque

A table lists typical power cable specifications and wiring torque for various PIHF harmonic filter models. It includes columns for Harmonic filter model, Incoming and outgoing line terminal, Capacitor switching terminal, Temperature control terminal, and PE, along with corresponding cable sizes and torque values.

Parameter setting

Under the default setting of ACS510, parameter 26.19 (enabling or disabling the DC voltage regulator) is used for disabling. The DC voltage regulator prevents voltage oscillation in the DC bus of the frequency converter due to motor load or weak grid. When the filter is matched with ACS510, set parameter 26.19 to ENABLE to reduce bus oscillation. For ACS530/ACx580/ACS880, use parameters 97.48 and 227.17.

Model information

A selection information table provides model details for PIHF harmonic filters across different drive series (ACS510, ACS530, ACx580, ACS880). It maps PIHF model numbers to specific frame sizes for each drive type.

Maximum, heat dissipation and noise level

A table details the maximum current (Imax), maximum power (Pmax), filter branch current (Ifilter), noise level, heat dissipating capacity, and CFM for various PIHF harmonic filter models. A note advises matching the filter power to the frequency converter power for optimal filtering effect.

Technical data

This chapter describes the technical specifications of the harmonic filter, including operating conditions, frame size, and parameter settings.

• Power connection: Rated voltage: Three-phase, U₁=380 to 415V +10% to -15%. Protection class: IP00.
• Harmonic filtering effect*: Under full load conditions, the total harmonic current distortion at the input of the filter (THDI) is less than 10% (background voltage THDU is lower than 2%, and the ratio between the short-circuit power of the grid and the installed load is higher than 66).
• Frequency: 50 Hz.
• Insulation class: Overvoltage category III (in accordance with EN61800-5-1).
• Overheating protection: 155 °C.
• Operating conditions: Cooling mode: Air cooling. Ambient temperature (operating): Under full load, -25 °C to +40 °C. Storage temperature: -25 °C to +70 °C. Work altitude: 0 to 2000m. Relative humidity: 0 to 95%, no condensation.

* In a typical motor drive system, the THDI can be reduced to less than 19% at any load ratio. Under 100% load ratio, the THDI can be controlled below 10%.

A graph shows the relationship between Load (%) on the x-axis and THDI (%) and Power Factor on the y-axes. THDI starts high and decreases as load increases, while Power Factor starts low and increases with load.

Frame size

A table lists the frame size, dimensions (H, W, D in mm), and weight (kg) for various PIHF harmonic filter models. Another table provides installation dimensions (W, W1, W2, D, H, H1, a1, a2, C1..C4, C5) for each frame size.

Product outline drawing (S1 to S4)

Schematic diagrams illustrate the physical outline and dimensions of PIHF harmonic filters for frame sizes S1 to S4, showing front, side, and top views with key dimensions labeled.

Product outline drawing (S5,S6)

Schematic diagrams illustrate the physical outline and dimensions of PIHF harmonic filters for frame sizes S5 and S6, showing front, side, and top views with key dimensions labeled.

Parallel Installation Diagram

For models requiring parallel installation, the wall-mounted mode is recommended. The installation distance between filters should be at least 200mm to ensure sufficient heat dissipation space. The diagram shows recommended clearances around the filters.

Further information

Product and service inquiries

Address any inquiries about the product to your local ABB representative, quoting the type designation and serial number of the unit in question. A listing of ABB sales, support and service contacts can be found by navigating to abb.com/search channels.

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Contact us

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