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Generators - Commercial Controls and Transfer Switch
 

Commercial Generators:

 

Guardian Elite Commercial Series 18 – 150 kW Generators

GUARDIAN is now doing to the commercial market what it has already done to the residential market... making standby power reliable, yet affordable. Protect your revenue stream by investing in a GUARDIAN Elite™ Commercial Series automatic standby generator. Our GUARDIAN Elite Commercial generators are ideal for a broad range of enterprises, including restaurants, convenience stores, supermarkets, banks, fitness centers, hotels, and retail outlets.

 

All Elite Commercial models are available in both single and three-phase configurations. They run on either natural gas or LPV, feature automotive style, liquid-cooled engines and GUARDIAN's exclusive Whisper-Test™ feature. Our 18, 25, 35 and 45 kW premium models come standard with higher displacement, low speed engines and aluminum enclosures. Aluminum enclosures are optional on the 60 kW and larger models.

 

Whisper Quiet Operation
GUARDIAN's exclusive Whisper-Test low speed exercise feature makes our GUARDIAN Elite products the quietest liquid-cooled generators on the market. Whisper-Test reduces noise by 50% during the generator's weekly self-test cycle allowing for near silent operation that satisfies all known sound ordinances.

 

Affordable Revenue Protection
During a utility outage, a GUARDIAN Elite will protect your revenue stream and prevent expensive losses by keeping your business... in business. Not only are our products engineered for reliability and long life, our volume production and short lead times make GUARDIAN Elite products an even better value.

  • Value Models: The most affordable protection in the industry for large homes and small to mid-sized businesses.

  • Premium Models: Larger, more powerful engines operate at 1800 RPM for ultra-quiet operation and standard aluminum enclosures provide superior corrosion protection for coastal areas and harsh environments.

  • Superior Paint: Tough, textured powder coat paint finish for unmatched durability and all weather protection.

  • UL Listed: For safety and certified power ratings.

  • Clean Burning Fuel: Natural gas or LPV.

18-25kW

Model Number QT01816 QT02016 QT02516 QT02524
Rated Power (LP / NG) 18/18 20/20 25/24 25/24
Rated Amps @ 60 Hz      
240 V, 1 (LPG) 75 83.3 104.2 104.2
240 V, 3 (LPG) 54.1 60.2 75.2 75.2
208 V, 3 (LPG) 62.5 69.4 86.8 86.8
480 V, 3 (LPG) N/A N/A N/A N/A
Surge Watts - 240V, 1 31,920 34,800 37,920 37,920
Surge Amps      
240V, 1 (LPG) 133 145 158 158
208V, 3 (LPG) 89 97 106 106
240V, 3 (LPG) NA 84 91 91
480V, 3 (LPG) NA N/A N/A N/A
Engine 1.6L/4 Cyl. 1.6L/4 Cyl. 1.6L/4 Cyl. 2.4L/4 Cyl.
Alternator RPM 1800 3600 3600 1800
Enclosure Aluminum Steel Steel Aluminum
Whisper Test Yes Yes Yes Yes
Sound Level (dBA @ exercise) 63 62 62 54
(dBA @ normal operation) 68 74 74 60
Dimensions (L" x W" x H") 62x29x34 62x29x34 62x29x34 77x34x45
Automatic Transfer Switch (not included) RTS RTS RTS RTS
Weight 845 875 875 1255
Typical Retail Price $6,000 $5,500 $7,500 $10,000

 

30-45kW

Model Number QT03016 QT03542 QT04524 QT04524* QT04542
Rated Power (LP / NG) 30/29 35/35 45/45 45/45 45/42
Rated Amps @ 60 Hz        
240 V, 1 (LPG) 125 145.8 187.5 187.5 187.5
240 V, 3 (LPG) 90.3 105.3 135.4 135.4 135.4
208 V, 3 (LPG) 104.2 121.5 156.3 156.3 156.3
480 V, 3 (LPG) 45.1 52.6 67.7 67.7 67.7
Surge Watts - 240V, 1 48,930 54,000 70,080 70,080 77,040
Surge Amps        
240V, 1 (LPG) 204 225 292 292 321
208V, 3 (LPG) 136 150 194 194 214
240V, 3 (LPG) 118 130 168 168 185
480V, 3 (LPG) 78 87 112 112 124
Engine 1.6L/4 Cyl. 4.2L/V-6 2.4L/4 Cyl. 2.4L/4 Cyl. 4.2L/V-6
Alternator RPM 3600 1800 3600 3600 1800
Enclosure Steel Aluminum Steel Steel Aluminum
Whisper Test Yes Yes Yes Yes Yes
Sound Level (dBA @ exercise) 62 60 61 61 60
(dBA @ normal operation) 75 65 73 73 65
Dimensions (L" x W" x H") 62x29x34 77x34x45 77x34x45 77x34x45 77x34x45
Automatic Transfer Switch (not included) RTS RTS RTS RTS RTS
Weight 935 1683 1414 1464 1703
Typical Retail Price $8,300 $11,300 $10,000 $11,300 $13,000

 

60-80kW

Model Number QT06030 QT07068 QT08046
Rated Power (LP / NG) 60/60 70/68 80/78
Rated Amps @ 60 Hz    
240 V, 1 (LPG) 250 291.6 333.3
240 V, 3 (LPG) 180.6 210.7 240.8
208 V, 3 (LPG) 208 243.1 277.9
480 V, 3 (LPG) 90.3 105.3 120.4
Surge Watts - 240V, 1 84,960 132,000 132,000
Surge Amps    
240V, 1 (LPG) 354 550 550
208V, 3 (LPG) 236 366 366
240V, 3 (LPG) 204 318 318
480V, 3 (LPG) 136 212 212
Engine 3.0L/V6 6.8L/V-10 4.6L/V-8
Alternator RPM 3600 1800 3600
Enclosure Steel or Alum. Steel or Alum. Steel or Alum.
Whisper Test Yes Yes Yes
Sound Level (dBA @ exercise) 63 61 64
(dBA @ normal operation) 71 65 74
Dimensions (L" x W" x H") 89x34x48** 97x37x48 116x37x55**
Automatic Transfer Switch (not included) RTS HTS HTS
Weight 1513 2040 1836
Typical Retail Price $12,500 $17,500 $14,000

 

100-150kW

Model Number QT10054 QT10068 QT13068 QT15068
Rated Power (LP / NG) 100/100 100/97 130/130 150/150
Rated Amps @ 60 Hz      
240 V, 1 (LPG) 416.6 416.6 541.6 625
240 V, 3 (LPG) 301 301 391.3 451.5
208 V, 3 (LPG) 347.4 347.4 451.5 521
480 V, 3 (LPG) 150.5 150.5 195.6 225.7
Surge Watts - 240V, 1 159,120 177,120 261,120 269,040
Surge Amps      
240V, 1 (LPG) 663 738 1,088 1,121
208V, 3 (LPG) 441 491 724 747
240V, 3 (LPG) 383 426 628 647
480V, 3 (LPG) 255 284 419 431
Engine 5.4L / V-8 6.8L/V-10 6.8L/V-10 6.8L/V-10
Alternator RPM 3600 1800 1800 3600
Enclosure Steel or Alum. Steel or Alum. Steel or Alum. Steel or Alum.
Whisper Test Yes Yes Yes Yes
Sound Level (dBA @ exercise) 64 61 65 66
(dBA @ normal operation) 74 72 75 79
Dimensions (L" x W" x H") 116x37x55** 116x37x55** 116x37x55** 116x37x55**
Automatic Transfer Switch (not included) HTS HTS HTS HTS
Weight 2137 2531 2699 2492
Typical Retail Price $16,500 $22,700 $22,000 $24,000

**Height does not include exhaust stack(s).

Oliver Communications Group, Inc.
Telecommunications Design & Installation
2457 Old York Road
Bordentown, NJ 08505
TEL (609)-324-1750
FAX (609)-324-1760

 


The transfer switch monitors utility power and signals the generator to start when utility power is interrupted. When utility power returns, the transfer switch returns the electrical load from the generator back to the utility. This ensures your most important electrical loads are powered, within seconds, even when you’re away.

The transfer switch is the difference between a truly automatic generator set and just another generator. No toggles to flip, no knobs to turn, no extension cords to run when you lose utility power. You will have the comfort and peace-of-mind knowing that your GUARDIAN standby generator does everything for you... automatically.

Suggested Transfer Switch
When choosing a transfer switch, you must match or exceed the generator output amperage. The following table illustrates a suggested transfer switch to use with each generator. The transfer switch to be used is based on the kW rating and voltage of the generator. All GUARDIAN transfer switches are UL 1008 Listed to meet safety and performance standards.


R-Series Digital Controller ---
7 LED Indicator Lights Standard
High Temperature
Shutdown
Standard
Low Coolant Level
Shutdown
Standard
2 Amp Battery Charger Standard
Engine Warm-up 10-15 seconds
Engine Cool-down 1 minute
 
H-100 Digital Controller ---
Sealed Casing Protects against
vibration, dust,
heat moisture,
corrosion, radio
interference,
electromagnetic
interference and
static discharge
Low Coolant, Hight
Temperature and
Low Oil Pressure
Automatic Shutdown
Standard
Digital Readout of
AC kW, kVA, Power
Factor and All
Engine Functions
Standard
Isochronous
Govenor Control
Standard
Predictive
Maintenance
Reminders
Standard
3 Phase Sensing Protects motor
by monitoring
voltage across
all 3 phases
2 Amp Automatic
Battery Charger
Standard
Fault Protection
(I2T Function)
Provides total
generator winding
protection under
all fault conditions
Start/Stop Control Programmable
auto-crank feature
Starter Lockout Standard
Automatic Weekly
Exerciser with
Selectable Low
Speed Exercise
Standard
Overspeed/
Over-voltate
Protection
Standard
Overcrank
Protection
Standard
Emergency Stop Standard
RS485 Remote 2-way
Communication with
HTS Transfer Switch
Standard
RS232 & RS485 Outputs Computer
connections for
remote monitoring
and remote
adjustments
(with optional
model and
GenLink software)
 
Transfer Switch ---
Liquid-cooled models with 4.2 liter engines or smaller use RTS transfer switches (100-400 amps).
Liquid-cooled models with engines over 4.2 liters use HTS transfer switches (100-800 amps).