GRIDSINE-C
Compact AHF Series

Dedicated active harmonic filter on a high-density IGBT platform. 400V, 30 – 150 A per module, up to 20 modules in parallel. Full 2nd–50th harmonic filtering, built for retrofit and space-constrained industrial installations.

400V (−15% ~ +15%) 30 – 150 A / module 2nd – 50th harmonic ≤ 5 ms response > 95% filtering effectiveness 3P3W / 3P4W
Dedicated active harmonic filtering
88 mm height — drawer / wall / vertical
2nd – 50th harmonic filtering
Up to 20 modules / cabinet
≤ 5 ms response time
Division 02 — Active Power Quality

Compact harmonic filtering
for retrofit and MCC

GRIDSINE-C is the dedicated active harmonic filter variant of the Compact Series — using the same ultra-compact IGBT 3-Level hardware platform with specialized AHF firmware for targeted harmonic elimination in 400V systems.

With module capacities from 30A to 150A and filtering effectiveness of >95%, GRIDSINE-C reduces THDi to below 5% at the point of common coupling — meeting IEEE 519 and IEC 61000-3-4 requirements in the tightest cabinet spaces.

Covering the 2nd through 50th harmonic orders with individual harmonic priority selection, GRIDSINE-C is purpose-built for retrofit projects, motor control centres and any installation where cabinet space is at a premium.

400V AHF dedicated mode 2nd–50th harmonic >95% filtering ≤10 ms response −25°C ~ +55°C (derating above 45°C)
GRIDSINE-C Module — View 1 GRIDSINE-C Module — View 2 GRIDSINE-C Module — View 3 GRIDSINE-C Module — View 4
≤10 ms
Total response time
150 A
Max module capacity
>95%
Filtering effectiveness
−25°C
Minimum operating
temperature
Technical Specifications

GRIDSINE-C — Full Specification

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

ParameterSpecification
Product seriesGRIDSINE-C — Compact Active Harmonic Filter (AHF)
Power electronics technologyHigh-Density IGBT, 3-Level Topology
FunctionAHF (Active Harmonic Filtering) — dedicated mode
Operating voltage400V (-15%~+15%)
Frequency50 / 60 Hz
Connection type3-Phase 3-Wire (3P3W) and 3-Phase 4-Wire (3P4W)
Module capacity (400V)30 · 50 · 75 · 100 · 150 A
Response time≤ 10 ms (total)
Switching frequency20 kHz
System efficiency≥ 97.5%
Harmonic filtering range2nd – 50th harmonic
Filtering effectiveness> 95%
THDi target< 5% at PCC
3-Phase load balancingYes — active
Max. parallel modulesUp to 20 modules
Overload capacity110% continuous / 120% for 1 minute
Operating temperature−25°C ~ +55°C (derating above 45°C)
Communication interfaceRS485 / CAN / RJ45 + 1.8" / 4.3" / 7" HMI (optional)
IP protectionIP20
StandardsIEC 61000 / IEEE 519
Key Features

What Makes GRIDSINE-C the Right Choice

Ultra-compact form factor with dedicated AHF firmware — purpose-built for retrofit, MCC and tight cabinet spaces.

2nd–50th Harmonic Filtering

Covers the full range of industrial harmonics. Individual harmonic order selection allows targeting specific frequencies produced by your non-linear loads.

Ultra-Compact Form Factor

The same space-saving design as GRIDVAR-C SVG. Drawer-type cassette slides into existing MCC frames — ideal for retrofit projects with limited cabinet space.

>95% Filtering Effectiveness

Effective harmonic elimination at rated capacity. Reduces THDi to below 5% at PCC, meeting IEEE 519 requirements.

−25°C to +55°C Operation

The widest temperature range in the GRIDSINE Compact family. Suitable for cold-climate industrial environments and outdoor enclosures.

Up to 20 Modules in Parallel

Scale from a single 30A module to large multi-module configurations. Master/Slave or Master/Master parallel architecture for redundancy.

Cost-Effective Solution

Optimized bill of materials and compact design reduce total cost of ownership while maintaining full harmonic filtering performance for industrial applications.

Module Variants

400V AHF Module Options

Five standard capacities from 30A to 150A. Up to 20 modules in parallel for large-scale harmonic mitigation.

30
A
400V3P3W/4WIP20
50
A
400V3P3W/4WIP20
75
A
Most specified
400V3P3W/4WIP20
100
A
400V3P3W/4WIP20
150
A
400V3P3W/4WIP20

All modules: IGBT 3-Level · 20 kHz · RS485 / CAN / RJ45 + 1.8" / 4.3" / 7" HMI (optional) · IEC 61000 / IEEE 519

Applications

Where GRIDSINE-C Is Specified

Targeted harmonic elimination for retrofit projects, compact installations and facilities with strict space constraints.

VFD

VFD-Heavy Plants

Variable frequency drives are the primary source of 5th, 7th, 11th and 13th harmonics. GRIDSINE-C targets these specific orders within a compact form factor.

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. Compact AHF modules fit into existing MCC infrastructure.

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.

Ready to specify GRIDSINE-C for your project?

Our engineering team will size the correct module capacity, mounting configuration and cabinet layout based on your facility's actual load profile — at no cost before commitment.

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-C

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

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