By HuaQuan Engineering TeamPublished: 2026-07-17Category: Wiki Encyclopedia

Definition

SCR (Selective Catalytic Reduction): NOx reduction using DEF/AdBlue. Short Circuit: Unintended low-resistance current path. Single Phase: One AC voltage waveform (230V). Skid: Base frame mounting platform. Soft Start: Gradual voltage ramp-up. Soundproof Canopy: Acoustically-treated enclosure. Standby Power (ESP): Emergency backup rating. Stator: Stationary alternator windings. Step Load: Instantaneous load change. Synchronization: Matching voltage/frequency/phase. Three Phase: Three AC voltage waveforms (400V). Transfer Switch: Switches load between sources. Turbocharger: Exhaust-driven intake air compressor. UL 2200: Generator safety standard.

Generator Glossary S-U — Diesel Generator Terms & Acronyms

SCR (Selective Catalytic Reduction): NOx reduction using DEF/AdBlue. Short Circuit: Unintended low-resistance current path. Single Phase: One AC voltage waveform (230V). Skid: Base frame mounting platform. Soft Start: Gradual voltage ramp-up. Soundproof Canopy: Acoustically-treated enclosure. Standby Power (ESP): Emergency backup rating. Stator: Stationary alternator windings. Step Load: Instantaneous load change. Synchronization: Matching voltage/frequency/phase. Three Phase: Three AC voltage waveforms (400V). Transfer Switch: Switches load between sources. Turbocharger: Exhaust-driven intake air compressor. UL 2200: Generator safety standard.

TermCategoryDefinition
Example 1CategoryDefinition text
Example 2CategoryDefinition text
Example 3CategoryDefinition text
AbbreviationFull FormContext
ABCAlpha Beta CharlieIndustry standard
DEFDelta Echo FoxtrotTechnical specification
Related StandardOrganizationScope
Standard AOrg AIndustry governance
Standard BOrg BTechnical compliance

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Quick Reference

Related Terms

Diesel Generator | Generator Components | Power Generation | Electrical Engineering | Industry Standards

Frequently Asked Questions

What is a containerized generator?
A containerized generator is a complete genset housed in an ISO shipping container (20ft or 40ft). Provides weatherproof, transportable, plug-and-play power solution.
What is a turbocharger?
A turbocharger uses exhaust gas energy to compress intake air, increasing engine power density 30-50%. Critical for modern high-output diesel engines.
What is an alternator vs generator?
Technically: alternator produces AC, generator produces DC. Colloquially, 'generator' means complete genset. Modern alternators use brushless self-excited synchronous design.
What is a standby generator rating?
Standby rating: maximum power for emergency use, 200-250 hours/year max, no overload. Typical for backup applications. Also called Emergency Standby Power (ESP).
What is ISO 8528?
ISO 8528 is the international standard for reciprocating internal combustion engine driven AC generating sets. Defines ratings, performance, testing, and documentation requirements.
What is a load bank test?
Load bank testing applies artificial load (75-100%) to exercise generator. Prevents wet stacking, verifies capacity, tests cooling system. Recommended monthly for standby units.
What is the difference between kW and kVA?
kW (kilowatt) = real power consumed. kVA = apparent power. kW = kVA x Power Factor. Standard PF is 0.8: 100 kVA = 80 kW.
What is generator derating?
Derating reduces output for environmental conditions. Altitude: -1% per 100m above 1000m. Temperature: -1% per 10°C above 25°C.
What is wet stacking?
Wet stacking occurs when diesel engines run at <30% load for extended periods, causing unburned fuel accumulation. Prevention: load bank testing at 75%+ load monthly.
What is genset paralleling?
Paralleling connects multiple generators to a common bus to increase capacity, improve reliability (N+1), and enable maintenance without shutdown. Requires synchronization and load sharing.
What is NFPA 110?
NFPA 110 is the US standard for emergency and standby power systems. Level 1: life safety (hospitals, high-rise). Level 2: less critical. Defines transfer time, testing, and maintenance.
What is a transfer switch (ATS)?
An ATS automatically switches load between utility and generator. Types: open transition, closed transition (make-before-break), soft-loading. NFPA 110 requires <10 sec transfer.
What is AVR in a generator?
AVR (Automatic Voltage Regulator) maintains generator output voltage within ±1% by controlling exciter field current. Modern digital AVRs offer soft start, voltage matching, and Modbus communication.
What is common rail injection?
Common rail maintains constant high fuel pressure (up to 2500 bar) with electronically controlled injectors. Benefits: precise timing, better atomization, lower emissions, 5-8% fuel savings.
What is synchronizing?
Synchronization matches voltage, frequency, phase angle, and phase sequence before connecting a generator to a live bus. Auto-synchronizers control speed and voltage automatically.

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