Industries · Power & Energy

Load, grid and generator — tested to standard

From diesel gensets to grid-tied inverters and data-centre backup power — Langdi's intelligent load banks and test systems verify performance against GB/T 2820 and ISO 8528, in the factory or in the field.

Talk to an Engineer See the load bank catalogue

The challenge

The grid keeps changing the rules

Inverters meet weak grids

Grid-tied PV and storage inverters must ride through low-impedance networks and disconnect on islanding — both need dedicated test platforms to prove.

Data centres can't blink

Backup gensets and UPS chains are only as good as their last commissioning test — high-voltage RC loads make the test real.

Standards demand documentation

ISO 8528 and GB/T 2820 acceptance testing needs controlled load steps and complete records, not clip-on meters.

What we test

Generation, storage and the loads between

Diesel & gas gensets — load acceptance, transient response and endurance per ISO 8528 / GB/T 2820.
Grid-tied inverters — anti-islanding detection and weak-grid adaptive performance on precision RLC platforms.
UPS & backup chains — data-centre commissioning with high-voltage resistive-capacitive loads.
Marine power systems — propulsion-load simulation and shore-power compatibility verification.
High-speed machines — turbomachinery and spindle motor stands from the motor bench family.

The Langdi stack for power & energy

SCADA-grade supervision, bench-grade data

LDEV-X SCADA model

Live single-line dashboards, load-step sequencing and alarm supervision — the same suite that runs our test benches runs your power lab. About LDEV-X →

LDRT — fast transients

Deterministic control captures load-acceptance transients that slow supervisory systems miss. About LDRT →

OPC UA · Modbus · S7

Open industrial connectivity integrates load banks with your plant, BMS or building systems.

Proven hardware

The intelligent load bank family

From the standard testbed catalogue:

Stationary	High-power RLC dry-type · high-voltage RC for data centres · marine load banks.
Grid-compliance platforms	Anti-islanding detection · weak-grid simulation for inverter validation.
Rack & portable	19-inch rack 2U–6U (air- or liquid-cooled) · portable multi-unit-parallel · wall-mounted vehicle-integrated · mobile field units.
Test systems	Computer-controlled generator test per GB/T 2820 / ISO 8528 · production-line online generator test with one-click operation.