Product types

Disconnect Unit


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Disconnect Unit

Central Inverters

SUNNY CENTRAL- High Tech for solar power stations

We have developed the Sunny Centrals specially for use in large PV power stations and open-field plants. Hence they possess completely special properties. String monitoring, capacity for teamwork and the ability to feed into the medium-voltage power grid make them first choice for PV systems with homogenous structure.

The Sunny Centrals are easy to install - indoors as well as outdoors. With peak efficiencies of over 98 % they belong to the most efficient central inverters on the market. maximum reliability and durability furthermore ensures the greatest investment security.


Disconnect Unit


Complete NEC conformity, compact in a single switch cabinet

The new Disconnect Unit combines all safety measures into a single, compact enclosure. It is perfectly suited for all Sunny Central inverters with a plant voltage from 600 V to 1000 V currently used in North America. All switch-disconnectors are concentrated in a small space to ensure easy handling in hazardous situations, working under full load conditions and having high ampacity reserves required by the NEC 2011. The switching handles installed in the front enable the switch position to be identified at a single glance. This guarantees a secure and fast disconnection of all energy sources from the inverter in case of emergency or maintenance.



Compliant

  • Full compliance
    with all NEC-2011
    safety rules
Compact
  • All switch-disconnectors in
    a single enclosure
  • Available as an accessory of a complete
    MV block
Flexible
  • Suitable for all SMA inverters used in the USA
  • Extendable to up to six circuit breakers
  • Available with or without AC switch
Reliable
  • Visible switch position and fast handling in case of hazardous situation
  • Reliable disconnection, even under full load


  Disconnect Unit
600V
Disconnect Unit
1000V
Input (DC)    
DC voltage range 0 V – 600 V 0 V – 1000 V
Max. nominal DC current 1600 A 1600 A
Number of DC inputs 4 ... 10 6 ... 10
Max. short-circuit current / input 288.5 A 288.5 A
     
Data (DC switch)    
Switch type Switch-disconnector Switch-disconnector
Max. short-circuit current 20 kA RMS 20 kA RMS
Number of DC switching handles 2 ... 5 3 ... 5
     
Data (AC switch)    
Switch type SC250-US: switch-disconnector,
SC500-US, SC500HE-US, SC500HE-CA: circuit breaker
Circuit breaker
Nominal AC voltage range 128 V – 528 V 128 V – 528 V
AC switching current / max. short-circuit current 400 A / 200 kA, 800 A / 100 kA, 1600 A / 42, 65 ,85 kA 1600 A / 42, 65 ,85
Number of the AC switching handles 1 1
     
General data    
Dimensions (W / H / D) 2078 1) / 1500 / 970 mm
(80 / 59 / 39 inch)
2278 / 1500 / 970 mm
(80 / 59 / 39 inch)
Weight 522 kg 2) / 1151 lb 664 kg / 1464 lb
Operating temperature range -25 °C ... +50 °C
-13 °F ... +122 °F
-25 °C ... +50 °C
-13 °F ... +122 °F
Storage temperature range -40 °C ... +60 °C
-40 °F ... +140 °F
-40 °C ... +60 °C
-40 °F ... +140 °F
Degree of protection NEMA 3R NEMA 3R
Cooling system Passive Passive
Maximum permissible value for the relative humidity (non-condensing) 15 % ... 95 % 15 % ... 95 %
Maximum operating altitude above MSL 4000 m 13000 ft
Derating above 2000 m 6500 ft
4000 m 13000 ft
Derating above 2000 m 6500 ft
     
Features    
Chemically aggressive environment yes  
Cable entry on side / below yes / yes yes / yes
Switch handles on the front yes yes
Connection via terminal lug / screw terminal opt. / opt. opt. / opt.
Certifi cates and approvals (more upon request) UL 1741 UL 1741 3)
Conformity NEC 2011 NEC 2011
     
Type designation Disconnect Unit 600V Disconnect Unit 1000V
     
1) 2278 mm or 90 inch for SC500HE-US, SC500HE-CA
2) 664 kg for SC500HE-US, SC500HE-CA
3) Cabinet + AC switch: UL1741, DC switch: IEC 60947-3, UL98B pending

Additional Information

  • manufacturer:  SMA Solar Technology / Germany /
Total Views: 2886

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