Skip to main content
GW Instek PEL-5000 high-power DC electronic load in a test rack
GW Instek Technical Guides

GW Instek PEL-5000G/C: High-Power DC Electronic Loads for EV and Solar Testing

GSAS Engineering · · 5 min read

Two Architectures, One Family

The PEL-5000 family consists of two product lines optimized for different test scenarios:

PEL-5000G: the high-voltage, high-transient variant. With 1200 V maximum input voltage, Turbo Mode for 1.5x transient current capability, and Surge Mode for pulse-load simulation, the PEL-5000G targets applications where the DUT operates at high voltages or produces transient events that exceed steady-state ratings.

PEL-5000C: the high-power parallel variant. Designed for aggregate loads up to 192 kW through 8-unit parallel operation, with CV (constant voltage) mode available even in parallel configuration and built-in MPPT test capability for solar panel characterization.

PEL-5000G: Turbo and Surge Modes

Standard electronic loads are rated for continuous operation at their nameplate current. When a DUT produces a current spike, motor inrush, capacitor charging, fault events, the load must either absorb it (risking overcurrent protection trips) or be oversized for the transient.

The PEL-5000G’s Turbo Mode addresses this by providing 1.5x the rated current for transient events. A 100A-rated PEL-5000G can absorb 150A transients without tripping, eliminating the need to oversize the load for occasional current peaks.

Surge Mode extends this further for pulse-load applications, testing pulsed power supplies, radar transmitters, and other equipment that delivers energy in short, high-current bursts.

1200 V Input Range

The 1200 V maximum input voltage covers the voltage range of modern EV battery packs (400V and 800V architectures), high-voltage DC bus systems, solar string inverters, and industrial DC power distribution. A single PEL-5000G unit can test DUTs from 0 to 1200 V without range switching or reconfiguration.

PEL-5000C: Parallel Scaling to 192 kW

The PEL-5000C supports up to 8 units in master-slave parallel operation. Under master-slave control, the parallel array behaves as a single logical load, the master unit distributes the load setpoint across all slave units, handles current sharing, and presents a single communication interface to the test automation system.

Key parallel capabilities:

  • 192 kW aggregate: 8 units at 24 kW each
  • CV in parallel mode: constant voltage regulation maintained across the parallel array, essential for battery simulation where the load must hold a specific voltage
  • Dynamic load sharing: automatic current balancing across parallel units without manual trimming

Solar Panel MPPT Testing

The PEL-5000C includes a built-in MPPT (Maximum Power Point Tracking) test mode that sweeps the I-V curve of a solar panel or panel string. The load automatically varies the operating point across the full voltage-current envelope, records the power at each point, and identifies the maximum power point.

This capability is directly relevant to India’s solar manufacturing and installation sectors. Panel manufacturers use MPPT testing for production quality verification, confirming that each panel meets its rated power output. Installers and system integrators use it for commissioning verification of installed strings.

EV Charger Testing Application

India’s EV charging infrastructure is expanding rapidly, with DC fast chargers operating at 50 kW to 350 kW. Testing these chargers requires an electronic load that can simulate the battery pack being charged, absorbing the charger’s DC output while maintaining the voltage profile that the charger expects.

The PEL-5000C in parallel configuration provides the power absorption capacity, while CV mode simulates the battery voltage profile. Combined with a DAQ-9600 for measurement and logging, this creates a complete DC fast charger test station.

For charger manufacturers in Bengaluru, Pune, Chennai, and Hyderabad, the PEL-5000C parallel array provides a scalable test solution that grows with production volume.

Availability Through GSAS

GSAS Micro Systems provides the PEL-5000G and PEL-5000C in India as an authorized GW Instek partner. Services include load sizing for your specific DUT, parallel array rack configuration, SCPI automation integration, and demo units from offices in Bengaluru, Hyderabad, Chennai, Pune, Mumbai, and Delhi NCR.

Request a quote | Book a demo

Also appears in:

GW Instek Technical Guides

Interested in GW Instek tools?

Talk to our application engineers for personalized tool recommendations.

Request a Quote Ask an engineer a question →
← Back to Blog Discuss This Topic With Us

More from GW Instek

View all →
GW Instek RBS Series battery simulation and state-of-charge screens for BMS testing, from GSAS India

Battery Simulator vs Battery Emulator: Hardware for BMS and Pack Testing

1 Sept · 7 min

Energy storage rack qualification bench diagram: bidirectional source and sink cycling a rack with energy returned to the facility supply, GSAS India

BESS Test Benches: Rack-Level Charge and Discharge Qualification

1 Sept · 7 min

Motor drive test bench DC bus architecture: one regenerative bidirectional source replacing supply, blocking diode and load, GSAS India

Motor Drive Test Benches: DC Bus Supply and Regenerative Braking

1 Sept · 8 min

Solar array simulation diagram: photovoltaic I-V and P-V curves with the maximum power point an MPPT tracker follows, GSAS India

Solar Array Simulation for PV Inverter MPPT Testing

1 Sept · 7 min

GSAS Micro Systems launch key visual for the new manufacturing and expanded R&D facility at Doddaballapur, Karnataka

GSAS opens its Doddaballapur manufacturing and R&D facility

5 Sept · 2 min

Autonomous haulage system architecture: office fleet control, on-truck vehicle control and the wireless link between them, GSAS India

Autonomous Haulage Is a Network Problem Too

2 Sept · 8 min

Stay in the Loop

Get monthly compliance updates, product insights, and engineering best practices delivered to your inbox.

Related Articles

Side by side comparison of a 10BASE-T1S multidrop mixing segment, one balanced pair with four nodes on short stubs and a termination at each end, against a point to point star of four separate links into switch ports, from GSAS Micro Systems India
Automotive Ethernet Automotive & Mobility

10BASE-T1S and PLCA: Multidrop Ethernet Explained

10BASE-T1S is the one member of the T1 single-pair Ethernet family that keeps a shared medium, and PLCA is the reconciliation sublayer that stops the nodes on it from colliding. This article covers what IEEE 802.3cg standardises, how the beacon and transmit opportunities schedule a cycle, the node count and segment length figures the OPEN Alliance interoperability test suite works to, and the failure modes that put a segment quietly back into contention while every link still looks up. Written by the GSAS Micro Systems engineering team in India for teams bringing up multidrop segments on the bench.

29 Aug 2026 · 12 min read
Ladder chart of the T1 single-pair Ethernet family by data rate: 10BASE-T1S (802.3cg), 100BASE-T1 (802.3bw), 1000BASE-T1 (802.3bp), 2.5/5/10GBASE-T1 (802.3ch) and 25GBASE-T1 (802.3cy), one balanced pair across five IEEE standards, from GSAS Micro Systems India
Automotive Ethernet Automotive & Mobility

The T1 Family Explained: 10BASE-T1S to Multi-Gig 802.3ch

The T1 family is the set of single-pair Ethernet physical layers used in vehicles, and every member is documented separately inside a different datasheet. This guide puts all of them in one table with rate, symbol rate, line code, specified reach and cabling traced to public IEEE task force documents, then answers the two questions that keep coming back: why 100BASE-T1 has no auto-negotiation, and why one end has to be master. Written by the GSAS Micro Systems engineering team in India.

29 Aug 2026 · 13 min read
The AUTOSAR network management state ring: Bus Sleep, Repeat Message, Normal Operation, Ready Sleep and Prepare Bus Sleep, with the wake transition marked; the governing timers for each exit are named in the article's sourced state table, from GSAS Micro Systems India
Automotive Ethernet Automotive & Mobility

ECU Testing over Ethernet: Startup, Shutdown and Wake

A bench that powers the ECU, waits for it to settle and then starts capturing has already skipped three of the four phases where integration defects live. This is the lifecycle version of ECU testing over Ethernet: what a ping does not prove, the AUTOSAR network management state set and the timers that govern it read out of the public specifications, why one node holds a whole cluster awake, and a phase-by-phase table of stimulus, observable, pass criterion and capture method you can write test cases from this week. Written by the GSAS Micro Systems engineering team in India.

29 Aug 2026 · 13 min read