Load Banks for Rent or Hire
GRNZ offers a comprehensive range of resistive, inductive and capacitive load banks to facilitate the proactive testing of generators and other electrical power sources on your site.
If required our team can provide a full range of services to undertake load testing of your equipment for you.
Our load banks are capable of operation at DC, 50Hz, 60Hz and 400Hz (aviation ground power units, GPU's) and at DC voltages including 12V, 24V, 48V, 110V up to 700V.
A portable load bank used for testing electrical equipment provides a stable, consistent and repeatable electrical load that can be accurately controlled, recorded and measured.
Load Banks
The goal of load bank testing is to identify potential problems proactively and in a controlled environment, rather than during an actual failure. Load bank testing (resistive, capacitive or inductive) is a critical part of any maintenance program for emergency generators sets, uninterruptible power supplies, medical facilities and infrastructure, HVAC systems and data centre operations.
Without regular load bank testing, the risk of generator failure during an emergency increases dramatically. The most practical means of ensuring power system reliability is through regular testing with a portable load bank. This provides a consistent and repeatable electrical load.
Reactive Load Testing
There has been a steady increase for the requirement of reactive (leading and lagging power factor) load testing (capacitive and inductive) particularly within the data centre sector. These environments typically contain a large amount of electronically derived load present on the distribution system and there is a requirement to be able to replicate these similarities by load testing infrastructure, UPS's and/or generators.
Leading or Lagging Power Factor
Power factor = True power/Apparent power.
Power factor is always between 0 and 1 and can be determined by the lead or lag of current with respect to voltage. The terms "leading" and "lagging" refers to where the load current phasor lies in relation to the supply voltage phasor. They are determined by the Sine of the phase angle between the current and voltage waveforms. Capacitive loads will, therefore, cause a leading power factor, whereas inductive loads will cause a lagging power factor. A power factor is often stated as "leading" or "lagging".
The Following Resistive Load Banks and Associated cables are available:
1 x 1600kW
1 x 1000kW
1 x 750kW
2 x 600kW
1 x 500kW
3 x 400kW
2 x 240kW
1 x 80kW
The Following Capacitive Load Banks and Associated Cables are Available:
400kVAr - 0.95pf - 1280kVA (capacitive / leading power factor)
400kVAr - 0.90pf - 915kVA (capacitive / leading power factor)
The Following Inductive Load Banks and Associated Cables are Available:
1200kVA (inductive / lagging power factor)
GRNZ 750kW Resistive Load Bank
- GRNZ 750kW resistive load bank
- Adjustable up to 750kW resistive load
- 230/400Vac, 50/60Hz
- 3-phase or 1-phase
- Rated for continuous operation
- Control panel contains a multi-function power meter displaying Volts, Amps, active kW, apparent kVA, reactive kVAr, Power Factor and Frequency
- Tandem, braked, road legal trailer mounted with 1 & 7/8" and 50mm towing hitch
- Supplied with cables if requested
- 2190kg
- 6600mm long x 2300mm wide x 3100mm high (includes road trailer)
- Cannot be operated in the rain
- NZ Code of Compliance
GRNZ 1MW Resistive/Capacitive Load Bank
- Adjustable up to 1MW resistive load and 60kVAr capacitive load
- 230/400Vac, 50/60Hz
- 3-phase or 1-phase
- Rated for continuous operation
- Control panel contains a multi-function power meter displaying Volts, Amps, active kW, apparent kVA, reactive kVAr, Power Factor and Frequency
- Tandem, braked, road legal trailer mounted with 1 and 7/8" and 50mm towing hitch
- Supplied with cables if requested
- 2250kg
- 6600mm long x 2300mm wide x 3100mm high (includes road trailer)
- Cannot be operated in the rain
- NZ Code of Compliance
Schneider Avtron 80kW Resistive Load Bank
- Maximum electrical load of 80kW, variable from 0-80kW
- 230V / 400V / 50Hz
- 1-phase or 3-phase
- Rated for continuous operation
- Full digital metering included for monitoring of Volts, Amps, Frequency, and kW
- Includes hardened case with wheels for easy transportation and relocation
- Comes with twist-lock cables, plugs and adapters for multiple connection options
- Requires an external 230V / 1-Phase / 50Hz source; adapter cord provided
- 47.5kg
- 660mm long x 430mm wide x 810mm high
- Cannot be operated in the rain
- NZ Code of Compliance
Get in Touch Today
Call us or email us to discuss your specific requirements with our engineering team.
