AC/DC Electrician and photovoltaic technician

AC/DC Electrician and photovoltaic technician
AC/DC Electrician and photovoltaic technician (100 %)
Autonomous AC sites · DC commissioning · monitoring
JOB INFORMATION

• Job title: AC/DC Electrician and photovoltaic technician
• Activity rate: 100 %
• Reporting to: Project Manager / technical manager
• Base: GTS headquarters; sites in French-speaking Switzerland
• Required qualification: CFC electrical installer — copy to be attached to the application
• License: Category B required
• Start date: To be agreed

1. THE JOB IN BRIEF

Carry out the electrical part of GTS photovoltaic installations — AC and DC — and independently manage AC sites: material, planning, execution, measurements, reports. Commission, measure, document, and make an installation functional and compliant.
The job is:

• Pulling, connecting, measuring, commissioning, and documenting.
• Taking an AC site and managing it from start to finish without continuous supervision.
• Being the technical reference on the ground when an installation malfunctions.

The job is not:

• Module installation on a daily basis: the mechanical part is done by the assembly teams.
• An office job: the field remains the heart of the profession.
• A position without progression.

Typical volume:

• From residential to industrial buildings. Common objects from 10 to 500 kWp, with larger power projects growing.

1. AC PART — REQUIRED

This is the core of the job. You must know how to do it alone from the start.
Installation and connection

• Installation and connection of panels: AC enclosures, TGBT, protections, RCD, surge protectors, disconnectors, measuring devices.
• Pulling and connecting power cables, controlled sizing on site, cable trays, firestop passages.
• Earthing and equipotential bonding: implementation and verification.
• Connection to the injection point, coordination with the GRD, installation and parameter setting of meters and production metering.
• Rework and modification of existing installations: identification of circuits, planned outages, recommissioning.

Autonomous management of an AC site
A entrusted AC site must return finished, measured, and documented.

• Read the technical file, identify what is missing, and clarify before starting.
• Establish the complete material list and transmit it in time for the order.
• Plan your own work: order of steps, durations, coordination with other trades and with the project manager.
• Organize the necessary means: access, scaffolding, aerial work platform, outages, access authorizations.
• Occasionally supervise an apprentice or a fitter on the AC part.
• Maintain the daily report, hours, and progress photos.
• Immediately report any deviation in deadline, cost, or feasibility — as early as possible.

Measurements, safety and documents
Without documents, the site is not finished.

• Own control of the installation according to NIBT and OIBT.
• Complete measurement protocols: continuity of the protective conductor, insulation resistance, loop impedance, short-circuit current, RCD control, phase order, earth measurement.
• Establishment of the safety report and annexes, within deadlines and without rework.
• Compliance with occupational safety rules: five safety rules, lockout/tagout, PPE, live work prohibited except by procedure.
• Reporting of non-conformities observed on existing installations encountered.

1. DC PART, COMMISSIONING AND MONITORING — DESIRABLE

Desirable at the start, indispensable in the long term. If not acquired, training is provided by us — see chapter 6.
DC side

• String wiring, connectivity, DC enclosures, disconnectors, surge protectors, routing, and fixings.
• Control of strings before powering up: polarity, open-circuit voltage, insulation resistance, short-circuit current.
• I-V curve measurement and interpretation; searching for string faults, insulation faults, and arcs.
• Control thermography and reading of results.

Inverter commissioning

• Commissioning and parameter setting of string and central inverters: grid settings, power curves, injection limitation, decoupling protection.
• Parameter setting in accordance with GRD requirements and current connection regulations.
• Drafting of the commissioning protocol and the record of applied parameters.
• Diagnosis and treatment of inverter faults, exchange under warranty, relationship with manufacturer support.

Monitoring and IT

• Installation and configuration of monitoring: gateways, meters, sensors, communication buses (Modbus RTU/TCP, RS485), irradiation and temperature probes.
• Networking: IP addressing, VLAN, 4G router, VPN, ports, client-side firewall — knowing how to communicate with an IT department.
• Control of data upload, alarms and thresholds, creation of client access.
• Analysis of a production deviation: distinguishing an installation fault, a hardware fault, shading, and a parameter setting error.

1. LARGE POWER, CHARGING STATIONS AND BATTERIES — ASSETS

Not required at the start, but these are the growing areas at GTS. Experience in one of them is a real plus.
Installations > 500 kVA

• Power panels, busbars, large cross-section cables, connections on transformer.
• Selectivity, coordination of protections, decoupling protection, grid quality control.
• Coordination with the GRD on connection conditions and compliance tests.

Charging stations

• Installation, connection, and commissioning of AC and DC stations.
• Dynamic load management, load shedding, metering, communication, and supervision (OCPP).
• Coordination with the building's available power and PV self-consumption.

Battery storage

• Installation, connection, and commissioning of storage systems.
• Parameter setting of operating modes: autocon