Sequoia Series — Precision Programmable Regenerative Grid Simulator

Sequoia Series — Precision Programmable Regenerative Grid Simulator

Ametek Programmable Power

The California Instruments Sequoia Series is a four-quadrant, regenerative precision programmable AC/DC source and grid simulator covering 15 kVA to 1.08 MVA. The Sequoia can both source and absorb power — making it simultaneously an AC/DC power source, a grid simulator and a regenerative electronic load.

  • Four-quadrant (regenerative) operation: sources AND absorbs AC and DC power
  • Power range: 15 kVA to 1.08 MVA (parallel systems)
  • Silicon-carbide (SiC) switching for high efficiency and reduced heat
  • Grid simulation: voltage sag/swell, frequency deviations, phase shifts, harmonics injection
  • Regenerative electronic load mode: energy returned to the mains (not dissipated)
  • 500 µs transient time resolution
  • Compatible with CTSHL for high-power harmonics and flicker compliance testing
  • 2-year standard warranty
Overview & Applications
BrandAmetek Programmable Power
Power (single chassis)15 kVA / 22.5 kVA / 30 kVA / 45 kVA / 90 kVA
Maximum parallel powerUp to 1.08 MVA
Operation modeFour-quadrant: source + absorb (regenerative)
Output Voltage0–166 V and 0–333 V line-to-neutral (dual range)
ModelPower (kVA)ConfigPhasesQuadrants
SQ0015G115Single (15 kVA)1-phase4Q regen.
SQ0045G145Single (45 kVA)1/3-phase4Q regen.
SQ0090G190Single (90 kVA)3-phase4Q regen.
SQ0180G21802× 90 kVA parallel3-phase4Q regen.
SQ0360G43604× 90 kVA parallel3-phase4Q regen.
SQ0540G65406× 90 kVA parallel3-phase4Q regen.

The Sequoia represents the highest capability tier in the Tahoe/Sequoia platform. Four-quadrant regenerative operation means that when acting as an electronic load, the Sequoia returns absorbed energy to the supply mains rather than dissipating it as heat — a critical advantage at power levels from tens to hundreds of kVA. As a grid simulator, the Sequoia can precisely reproduce real-world grid conditions including voltage sags, swells, frequency deviations, phase imbalances and harmonic distortion — all essential for testing photovoltaic inverters, EV chargers, energy storage systems and smart grid equipment to standards such as IEC 61727, IEEE 1547 and UL 1741.

True Four-Quadrant Regenerative

Sources and absorbs AC/DC power with energy recovery to mains — no thermal dissipation at kVA-scale loads, enabling economical high-power testing.

Complete Grid Simulation

Simulates all real-world grid events — sags, swells, frequency deviations, phase shifts and harmonics — for full inverter and energy system compliance testing.

Tahoe + Sequoia: Same Platform

Shares all chassis, accessories and control infrastructure with the Tahoe — labs can mix both series and scale capability as requirements grow.

CTSHL Integration

Direct integration with the CTSHL harmonics and flicker system enables full IEC 61000-3-2/3-3/3-11/3-12 compliance testing at power levels up to 125 A/phase.

View Models & Options

Request for quote

Looking for a custom solution or a tailored offer? Please fill out the form below, and we’ll get back to you as soon as possible with a personalized quote.

    Other products & series

    Mi-BEAM Series — Modular Bidirectional DC Power System (12 kW – 1.2 MW)

    Ametek Programmable Power
    Power (per unit): 12.5 kW / 25 kW / 37.5 kW
    Max parallel power: 1.2 MW
    Voltage Range: 600 VDC / 1,500 VDC / 2,000 VDC

    SGX Series — Modular High-Power DC Power Supply (5 kW – 975 kW)

    Ametek Programmable Power
    Power per chassis: 5 kW – 30 kW (1–6 modules)
    Maximum system power: 975 kW (65× 15 kW in parallel)
    Voltage Range: 0–20 V to 0–1,500 V (model dependent)

    MS Series AC Power Converter

    Pacific Power Source
    Power: 62.5 kVA to 625 kVA
    Voltage: 0–600 V (optional)
    Frequency: 20–500 Hz (1000 Hz optional)

    DP700 Linear DC Power Supplies

    RIGOL
    Channels: 1
    Total Power: 150 W
    Voltage/Current Options: 30 V/5 A or 50 V/3 A

    i-BEAM Series — Bidirectional DC Power System (60 kW – 1.3 MW)

    Ametek Programmable Power
    Power: 60 kW – 1.3 MW
    Bidirectional Current: Up to ±2,400 A
    Energy Recovery: 96% (regenerative)

    Asterion DC Half Rack Series

    Ametek Programmable Power
    Output power: Up to 1.7 kW
    Output Voltage: 40 V to 600 V
    Output Current: 2.8 A to 42 A

    Asterion AC Series — Programmable AC & DC Power Source

    Ametek Programmable Power
    Power: 500 VA – 18 kVA (single chassis); up to 36 kVA paralleled
    Output Voltage (DC): 0–250 VDC (low range) / 0–500 VDC (high range)
    Frequency: 16 Hz – 10 kHz

    DP800 Linear DC Power Supplies

    RIGOL
    Channels: 1–3
    Total Power: up to 200 W
    Ripple & Noise: < 350 µVrms / 2 mVpp

    TerraSAS ETS Series — Standalone Terrestrial Solar Array Simulator

    Ametek Programmable Power
    Voltage Models: ETS60 (60 Voc) / ETS80 (80 Voc) / ETS150 (150 Voc) / ETS600 (600 Voc) / ETS1000 (1,000 Voc)
    Power (per unit): 840 W (ETS60/80/150) up to 15 kW (ETS600/1000 × 3-unit)
    Bandwidth: Up to 30 kHz closed-loop

    DL3000 DC Electronic Loads

    RIGOL
    Maximum Power: 350 W
    Voltage Range: up to 150 V
    Current Range: up to 60 A

    Asterion ASC Series — High-Performance AC Power Source

    Ametek Programmable Power
    Power: 4,500 VA – 36,000 VA
    Output Voltage: 0–156 VAC (low range) / 0–312 VAC (high range)
    Output Current: Up to 60 A rms/phase; iX2 doubles current below 50% voltage

    DP900 Tripple Output Linear DC Power Supplies

    RIGOL
    Channels: 3 fully isolated
    Total Power: 210 W
    Ripple & Noise: < 350 µVrms / 2 mVpp

    RLS Series Regenerative AC/DC Load Simulator

    Pacific Power Source
    Power: 6 kVA to 756 kVA
    Voltage: 0–350 Vac L-N / 0–606 Vac L-L; −500 to +500 Vdc
    Frequency: DC, 15–1200 Hz

    Tahoe Series — Precision Programmable AC & DC Source

    Ametek Programmable Power
    Power (single chassis): 15 kVA / 22.5 kVA / 30 kVA / 45 kVA / 90 kVA
    Max parallel power: Up to 1.08 MVA (12× 90 kVA)
    Output Voltage: 0–166 V and 0–333 V line-to-neutral (dual range)

    DP2000 Tripple Output Linear DC Power Supply

    RIGOL
    Channels: 3 fully isolated
    Total Power: 222 W
    Ripple & Noise: < 350 µVrms / 2 mVpp

    ELZ Series Regenerative Electronic Load

    Pacific Power Source
    Power: 30 / 45 / 55 kVA up to 1.1 MVA+
    Voltage: 5–440 Vac L-N / 9–760 Vac L-L
    Frequency: DC, 15–1000 Hz

    AZX Series Regenerative AC & DC Source with PHIL

    Pacific Power Source
    Power: 30 kVA to 1.1 MVA+
    Voltage: 0–480 Vac L-N / 0–830 Vac L-L
    Frequency: DC, 15–1000 Hz

    Asterion DC Series — Programmable DC Power Supply

    Ametek Programmable Power
    Power: 1.7 kW / 3.4 kW / 5 kW (1U); 10 kW (2U)
    Voltage Range: 0–40 V to 0–600 V (model dependent)
    Current Range: Up to 250 A (model dependent)

    PLA Series — Air-Cooled DC Electronic Load (800 W – 250 kW)

    Ametek Programmable Power
    Power (per unit): 800 W – 7,500 W (standard); custom up to 250 kW
    Voltage Models: 60 V / 120 V / 400 V / 600 V / 800 V / 1,000 V
    Operating Modes: CC, CV, CP, CR, Dynamic CC, short simulation

    AGX Series Regenerative AC & DC Power Source

    Pacific Power Source
    Power: 6 kVA to 756 kVA
    Voltage: 0–350 Vac L-N / 0–606 Vac L-L; −500 to +500 Vdc
    Frequency: DC, 15–1200 Hz