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GRIDSINE-G
Standard AHF Series

Dedicated active harmonic filter. Advanced IGBT, 3-Level topology. 220V to 690V support. 15 – 200 A per module (400V), 20 modules in parallel. Targeted harmonic elimination for industrial networks.

220V – 690V 15 – 200 A / module (400V) ≤ 50 µs instant / ≤ 5 ms total ≥ 98% filtering effectiveness 2nd – 50th harmonic −20°C ~ +55°C
Dedicated AHF firmware
220V to 690V operation
≤ 5 ms total response
Up to 20 modules parallel
3-Phase load balancing
Division 02 — Active Power Quality

Dedicated harmonic filtering
for industrial networks

GRIDSINE-G is the dedicated active harmonic filter variant of the Standard Series — using the same proven IGBT 3-Level hardware platform with specialized AHF firmware for targeted harmonic elimination across 220V to 690V industrial systems.

With module capacities from 15A to 200A at 400V and filtering effectiveness of ≥98%, GRIDSINE-G reduces THDi to below 5% at the point of common coupling — meeting IEEE 519 and IEC 61000-3-4 requirements.

Covering the 2nd through 50th harmonic orders with individual harmonic priority selection, GRIDSINE-G targets the specific harmonic signatures produced by VFDs, UPS systems, rectifiers and other non-linear loads.

220V – 690V AHF dedicated mode 2nd–50th harmonic ≥98% filtering ≤5 ms response −20°C ~ +55°C
GRIDSINE-G Module — Front View
GRIDSINE-G Module — Side View
GRIDSINE-G Module — Detail View
≤5 ms
Total response time
(≤ 50 µs instant)
200 A
Max module capacity
(400V)
≥98%
Filtering effectiveness
−20°C
Minimum operating
temperature
Technical Specifications

GRIDSINE-G — Full Specification

All parameters from the official Forte engineering datasheet. Dedicated AHF firmware on the same proven IGBT 3-Level hardware platform.

ParameterSpecification
Product seriesGRIDSINE-G — Active Harmonic Filter (AHF)
Power electronics technologyAdvanced IGBT, 3-Level Topology
FunctionAHF (Active Harmonic Filtering) — dedicated mode
Operating voltage220V / 400V / 480V / 690V
Frequency50 / 60 Hz
Connection type3P3W / 3P4W / Single Phase
Module capacity (400V)15 · 25 · 30 · 50 · 75 · 100 · 125 · 150 · 200 A
Response time≤ 50 µs (instant) / ≤ 5 ms (total)
Switching frequency25.6 kHz
Active power loss≤ 2.5%
System efficiency≥ 98%
Filtering efficiency≥ 98% (typical harmonics)
Harmonic reduction ratio≥ 98% (fundamental harmonics)
Harmonic filtering range2nd – 50th harmonic
Filtering effectiveness≥ 98%
THDi target< 5% at PCC
THDi≤ 5% (at rated load)
Neutral current (4-wire)3× rated current
3-Phase load balancingYes — active
Max. parallel modulesUp to 20 modules
Overload capacity110% continuous / 120% for 1 minute
Operating temperature−20°C ~ +55°C
Communication interfaceRS485, CAN Bus, Modbus RTU, Mobile APP, 4.3" / 7" / 10" TFT LCD (optional)
MountingRack / Wall-mount / Freestanding
IP protectionIP30 (max.)
StandardsIEC 61000 / IEEE 519
Key Features

What Makes GRIDSINE-G the Right Choice

Dedicated harmonic filtering firmware on the same proven IGBT 3-Level hardware — optimized for targeted harmonic elimination.

2nd–50th Harmonic Filtering

Covers the full range of industrial harmonics. Individual harmonic order selection allows targeting specific frequencies.

≥98% Filtering Effectiveness

Near-complete harmonic elimination at rated capacity. Reduces THDi to below 5% at PCC.

220V to 690V Operation

The widest voltage range in the GRIDSINE family. Native 690V support for heavy industrial plants.

Up to 200A per Module

High current capacity modules reduce the number of parallel units needed for large installations.

3-Phase Load Balancing

Active negative sequence compensation eliminates phase imbalance caused by single-phase non-linear loads.

Same Hardware, AHF Firmware

Identical physical module to GRIDVAR-G SVG. The difference is in the control card and firmware — optimized for harmonic filtering.

Module Variants

400V AHF Module Options

Nine module capacities cover every industrial AHF requirement. Up to 20 modules in parallel for large-scale harmonic mitigation.

15
A
400V3P3W/4WIP30
25
A
400V3P3W/4WIP30
30
A
400V3P3W/4WIP30
50
A
400V3P3W/4WIP30
75
A
400V3P3W/4WIP30
100
A
Most specified
400V3P3W/4WIP30
125
A
400V3P3W/4WIP30
150
A
400V3P3W/4WIP30
200
A
400V3P3W/4WIP30

All modules: Advanced IGBT 3-Level · 25.6 kHz · RS485, CAN Bus, Modbus RTU, Mobile APP, 4.3" / 7" / 10" TFT LCD (optional) · IEC 61000 / IEEE 519

Applications

Where GRIDSINE-G Is Specified

Targeted harmonic elimination for industrial and commercial environments with non-linear load profiles.

VFD

VFD-Heavy Plants

Variable frequency drives are the primary source of 5th, 7th, 11th and 13th harmonics. GRIDSINE-G targets these specific orders with individual priority selection.

DC

Data Centers

UPS input stages and server power supplies inject harmonics that must be mitigated to meet strict grid code requirements at the PCC.

H

Hospitals

Medical imaging equipment, UPS systems and surgical lighting generate harmonics that can interfere with sensitive diagnostic instruments.

P

Printing & Packaging

High-speed servo drives and DC motor controllers produce a broad harmonic spectrum that degrades power quality across the facility.

A

Automotive

Welding robots, paint line rectifiers and conveyor VFDs each contribute distinct harmonic signatures that require targeted filtering.

SC

Semiconductor

Clean room equipment and precision process tools demand ultra-clean power. ≥98% filtering effectiveness ensures supply quality.

CB

Commercial Buildings

LED lighting, IT equipment and HVAC drives in modern buildings generate cumulative harmonics that increase neutral current and transformer heating.

RE

Renewables

Solar inverters and wind turbine converters inject harmonics at the point of common coupling. AHF ensures grid code compliance.

Need tighter space, higher cabinet capacity or broader harmonic filtering (2nd–51st)? Compare GRIDSINE-G with the Compact and SiC tiers.

Compare all GRIDSINE models

Ready to specify GRIDSINE-G for your project?

Our engineering team will size the correct module capacity and panel configuration based on your facility's load profile — at no cost before commitment. 400V and 690V projects welcome.

Documents

Technical documents for this product. Ask for a document still in preparation and we will send it as soon as it is ready.

Request a Quote — GRIDSINE-G

Our engineering team will contact you within 1 business day. Urgent: +90 850 840 64 24

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