Qortoba District, Riyadh, KSA ISO 9001 · 14001 · 45001 · 50001
Malek Al-Riyadeh Company LTD logo Malek Al-Riyadeh
COMPANY LTD — ELECTRICAL ENGINEERING

Our Services

Integrated disciplines covering the full lifecycle of your electrical infrastructure.

What We Do

Comprehensive Engineering & Contracting Solutions

Integrated disciplines covering the full lifecycle of your electrical infrastructure — from design and studies to commissioning, automation and maintenance.

Engineering Design & Power System Studies

Detailed engineering support for oil & gas, industrial and utility markets.

  • ETAP studies: load flow, short circuit, protection coordination, arc flash, harmonics & stability
  • Electrical design, SLDs, schematics & shop drawings
  • Load studies, demand analysis & energy optimization
  • Earthing & lightning protection system design
  • Authority submissions & technical support

On-Site Testing & Commissioning

From LV equipment up to 33 kV MV systems.

  • LV/MV distribution equipment testing & commissioning
  • Power generation equipment (MV generators)
  • Primary & secondary injection, CT/VT & circuit breaker tests
  • LV & MV cable testing — IR, VLF, phase identification
  • Protection relay testing (SEPAM, MiCOM & more)

Preventive & Corrective Maintenance

For industrial plants, factories, data centers & commercial facilities.

  • Scheduled inspections of switchgear, transformers, generators & UPS
  • Verification of protection settings & interlocks
  • Emergency response for unscheduled outages
  • Root cause analysis & performance reporting
  • Compliance with IEC, IEEE & NFPA standards

Instrumentation & Control (SCADA, PLC, DCS)

A comprehensive automation & control portfolio.

  • PLC, DCS & SCADA system design and implementation
  • Process automation & batch control (ISA-88, IEC 61131)
  • HMI development per ISA-101 high-performance principles
  • System integration for multi-vendor environments
  • FAT/SAT, commissioning, start-up & training

Mechanical & Electrical Projects (MEP)

Integrated MEP solutions for every sector.

  • Commercial, industrial & residential developments
  • Indoor & outdoor power distribution
  • Lighting systems & home automation / smart buildings
  • Solar photovoltaic panel systems
  • Transportation systems — elevators & escalators

Lump Sum Turnkey Electrical Contracting

End-to-end delivery under turnkey models.

  • MV networks — RMUs, transformers, switchgear & cabling
  • Generators, ATS panels & synchronizing systems
  • Fire alarm & FM-200 suppression systems
  • SEC-compliant design, approvals & energization
  • Complete testing, commissioning & handover

Construction Supervision & Building Services

Full-spectrum supervision ensuring quality, safety & compliance.

  • Electrical distribution systems & substations
  • Supply & installation of LV/MV equipment
  • Grounding (earthing) & lightning protection
  • SEC contractual procedures & approvals
  • Project management & technical field services

Transformer Oil Purification

ZJA-50G double-stage vacuum oil purifier — 3000 L/h.

  • Deep purification of transformer oil up to 110 kV+
  • Vacuum filling & vacuum drying of transformers
  • Online operation without transformer shutdown
  • Filtration precision ≤ 1 μm, water content ≤ 3 ppm

Electrical Maintenance — MV, LV, SCADA & PLC

Keeping critical infrastructure running at peak reliability.

  • MV/LV switchgear service & retrofits
  • SCADA & PLC troubleshooting and upgrades
  • Protection relay configuration & coordination
  • Thermographic surveys & power quality logging

LV Panel Manufacturing — Our Factory

In-house factory in Riyadh for panel board assembly.

  • MDB, SMDB, EMDB, lighting & power panels
  • ATS, PFC, control & protection, PLC/SCADA and synchronizing panels
  • Custom design, fabrication & pre-delivery testing (FAT)
  • Delivery to site and operation training
Visit Our Factory Page →
Engineer reviewing a switchgear line-up
01 · Engineering

Engineering & Power-System Studies

Packages built from verified system data, issued with a defined basis, traceable assumptions and controlled revisions.

Power-system studies

  • Network data collection, validation and ETAP model
  • Load flow, voltage drop and short circuit
  • Protection coordination and relay-setting schedules
  • Arc-flash incident energy and PPE boundaries
  • Harmonics, motor starting and transient stability
  • Earthing, lightning-protection and DC calculations

Design & implementation

  • Single-line diagrams, control schematics and wiring
  • Cable sizing, demand calculations and schedules
  • Protection logic, interlocking and trip matrices
  • Shop drawings, submittals and material review
  • Study results turned into approved setting changes
  • As-built updates and handover records

Power-system study capabilities

Each study is built in ETAP from verified site data and issued with results, recommendations and settings ready to implement.

StudyWhat we determineStandardDeliverable
Load flow & voltage dropBus voltages, loading, losses, transformer tap positionsIEC 60038 · project specLoad-flow report, voltage profile
Short circuitPeak and breaking fault currents, equipment duty checkIEC 60909Fault-level schedule, duty assessment
Protection coordinationRelay and fuse grading, discrimination margins, settingsIEC 60255 · IEEE C37.112TCC curves, relay-setting sheets
Arc flashIncident energy, arc-flash boundaries, PPE categoryIEEE 1584 · NFPA 70EArc-flash labels, PPE table
Harmonics & power factorTHD, resonance risk, capacitor and filter sizingIEEE 519 · IEC 61000Harmonic report, PFC / filter specs
Motor starting & stabilityVoltage dip, acceleration time, stability marginsIEEE 399Starting curves, recommendations
Earthing & lightningStep and touch potential, grid resistance, LPS designIEEE 80 · IEC 62305Earthing calculations, layouts
Cable & DC sizingAmpacity, voltage drop, battery and charger sizingIEC 60364 · IEEE 485Sizing schedules

Swipe sideways to see the full table →

02 · Testing & Commissioning

Testing & Commissioning up to 33 kV

Inspection, testing, settings verification, functional proving and controlled handover for LV and MV systems.

Primary equipment

  • MV switchgear and RMU: IR, contact resistance, timing, interlocks
  • Transformers: ratio, vector group, winding resistance, IR and PI
  • CT/VT: ratio, polarity, burden, excitation, knee point
  • MV cables: continuity, phase ID, IR, VLF and sheath tests
  • Generators, ATS, synchronising, earthing and lightning protection
  • LV assemblies: insulation, breaker settings and functions

Protection & handover

  • Primary and secondary injection with trip-circuit proving
  • Relay logic, intertrips, blocking, alarms and annunciation
  • SCADA, PLC, remote I/O, metering and communication checks
  • Approved settings upload and as-left capture
  • FAT/SAT, witness points and punch-list close-out
  • Signed test sheets, calibration records and commissioning dossier
See Our Testing Lab →
Malek Al-Riyadeh engineers testing an RMU with calibrated test sets

Testing scope, instruments and standards

Every asset is tested with calibrated instruments against its IEC / IEEE reference.

AssetTests we performOur instrumentsReference
MV switchgear & breakersInsulation resistance, contact resistance, timing, interlocks, functional and SF6 checksMegger MIT1020/2 · Sonel MMR-6500IEC 62271
Power transformersTurns ratio & vector group, winding resistance, IR / PI / DAR, magnetic balance, excitation currentVanguard TRF-100 · Megger MIT1020/2IEC 60076
Protection relaysSecondary injection, pickup & time curves, directional / differential, trip circuits, intertripsKoCoS ARTES RC3IEC 60255
Primary circuitsPrimary injection, CT ratio & polarity proving, stability testsVoltx P30IEC 61869
CT / VTRatio, polarity, excitation & knee point, winding resistance, burdenISA iCT1IEC 61869
MV cablesIR before / after, VLF withstand, sheath test, phase identificationB2 HVA60 VLF · Megger MIT1020/2IEC 60502 · IEEE 400.2
Earthing & lightningEarth resistance (fall-of-potential), continuity, bondingMegger DET4TC2IEEE 81 · BS 7430
LV assemblies & circuitsIR, continuity, loop impedance, RCD trip, breaker settings, torqueMegger MFT1835 · Kyoritsu 3125A · torque wrenchIEC 61439 · IEC 60364
Energised equipmentInfrared thermography, partial-discharge screening (TEV / ultrasonic), power-quality loggingHikmicro G61 · UltraTEV Plus² · Fluke 1775IEC 61000-4-30
Generators, ATS & controlProtection, synchronising, load transfer, I/O, logic and alarm proving, SATARTES RC3 · project toolsIEC 61131 · project spec

Swipe sideways to see the full table →

Engineering References

Trusted for Critical Power Studies & Automation

Selected study and control references — every study built in ETAP from verified site data.

⚡ ETAP Power System Studies

  • ✔ Electrical network of King Abdullah Financial District (KAFD) Zone 2
  • ✔ Setraa Al Amal Project — power studies, DC calculations & MV SWGR heat dissipation
  • ✔ Electrical network of Tabuk Hospital Project
  • ✔ MV overcurrent coordination — Mena Royal Palace & Safa Royal Palace
  • ✔ Overcurrent coordination study — KAFD 1.14 (Riyadh Bank)
  • ✔ Load & voltage drop calculation — VIA Riyadh Project

🖥 SCADA & Control Projects

  • ✔ Water consumption management & billing — KFUPM University
  • ✔ Water consumption management — Saudi ARAMCO, UDH community
  • ✔ PLC & instrumentation verifications — MARAFIQ
  • ✔ SCADA systems for W&WW processes — installation to post-startup