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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesIndustrial & Product DesignNiederrohrdorfSeitz Instruments AG
Seitz Instruments AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Seitz Instruments AG develops and manufactures high-voltage testing and diagnostic systems and supplies onsite testing solutions for power cables and transformers in distribution and transmission networks. The company provides Damped AC testing technology, maintenance and calibration services, engineering support and operator training.

AI-generated
Offering

Products & services

Industry:Industrial & Product Design
✓ Offered7
Damped AC (DAC) technology
Damped AC voltage testing with partial discharge detection and dissipation factor measurement for on-site diagnosis of MV, HV and EHV power cables, onshore and offshore.
Testing and diagnostics for power cables
On-site after-laying, maintenance and condition-assessment testing for distribution and transmission cable systems, including voltage withstand tests, partial discharge measurement and fault localization.
Testing and diagnostics for offshore cables
After-laying testing and condition assessment for inter-array and export cables in offshore wind farms, with PD-monitored withstand testing and complete-string diagnostics.
Diagnostics of power transformers
Transformer diagnostic system for on-load tap changers and transformer windings, including dynamic resistance measurement, tap position checks, motor power measurement and winding resistance testing.
Diagnosis of coil and winding insulation
Offline diagnostics for high-voltage motors and generators with damped AC voltage, measuring dielectric loss factor and partial discharge activity in stator insulation.
Online partial discharge monitoring for cable systems
Online PD monitoring systems for power-system equipment and cable insulation condition, supporting condition-based maintenance, signal analysis and scheduling of offline tests.
Service, calibration and product upgrades
Service, calibration, software upgrades, security checks and refurbishment for company products, including older systems and spare parts supply.
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3.9/5

Seitz Instruments AG

Trust & reputation

ranQ Trust Score of Seitz Instruments AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Seitz Instruments AG scores 49.8 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.68.224%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.17.610%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.35.08%
Seitz Instruments AG scores 85.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
Seitz Instruments AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Seitz Instruments AG scores 34.3 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.34.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Seitz Instruments AG reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 1 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Knowledge

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Location

Mellingerstrasse 12
5443 Niederrohrdorf
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 00:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.484.504
Founded
1998 · 28 years
Last commercial register change
July 30, 2025
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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