Accessories for String Inverters
The CPS skidded string medium voltage station combines the strengths of string inverters with the efficiency of a centralized layout, optimizing energy production and control granularity. This high performance, pre-integrated system is not only designed for reliability, but additionally reduces on-site labor, shortens installation time, and lowers total project costs. The station can support up to twelve (12) CPS 250 kW-600 V inverters on a single steel skid and is compatible with DC combiners and/or trunk-bus cabling for design flexibility.
The CPS three-phase medium voltage transformer skid is the last step in the conversion that brings electrical power to the substation. The transformers are designed for superior reliability, efficiency, and environmental performance. A modular architecture paired with design options ensures cost efficiency and easy, minimal maintenance. The skid integrates a medium voltage transformer, low voltage cabinet, auxiliary transformer, and monitoring gauges. CPS offers various configurations with multiple capacities and interconnection voltages.
The CPS 800 Vac 2:1 Breaker Box is designed for CPS 350 kW three-phase string inverters to optimize system protection, installation, and wire management. The Breaker Box combines the output of up to (2) CPS 350 kW inverters allowing a cost-effective solution for simplifying system designs and providing individual protection for each inverter. This solution enables savings on labor and material costs by reducing the amount of wires needed to connect CPS string inverters to the grid.
The CPS DPA02-800V/US Switch Box is designed for CPS 350 kW three-phase string inverters to optimize system design, installation, and wire management. The units are designed to be connected to the output of the CPS 800 Vac 2:1 Breaker Box used with up to (2) CPS 350 kW inverters, allowing a cost-effective system solution for 800 Vac solar systems. This solution enables savings on labor and material costs while providing effective protection for the inverters and wires.
The CPS 800Vac 3:1 Breaker Box is designed for CPS 275kW three-phase string inverters to optimize system protection, installation, and wire management. The Breaker Box combines the output of up to (3) CPS 275kW inverters allowing a cost-effective solution for simplifying system designs and providing individual protection for each inverter. This solution enables savings on labor and material costs by reducing the amount of wires needed to connect CPS string inverters to the grid.
The CPS 800Vac Switch Box is designed for CPS 275kW three-phase string inverters to optimize system design, installation, and wire management. The units are designed to be connected to the output of the CPS 800V AC 3:1 Breaker Box used with up to (3) CPS 275kW inverters allowing a cost-effective balance of system solution for 800Vac solar systems. This solution enables savings on labor and material costs while providing effective protections for the inverters and wires.
The CPS Cluster Mount is designed to provide a simple, low-cost mounting solution for CPS 275kW inverters and CPS 800Vac BOS. (3) CPS 275kW and (1) 800Vac Breaker Box or Switch Box can be mounted onto piles to easily install the equipment for ground mount PV applications. This solution enables savings on labor and material costs for system designs and installation.
CPS shade covers are designed and manufactured specifically for use with our 1000Vdc string inverters. The covers help protect the inverter in harsh weather conditions (snow, ice) and reduces the thermal gain caused by direct sunlight. Depending on the application and environment, shade covers can help to increase energy production by reducing potential power derating due to excessive ambient temperatures.
A shade cover is required for installations at less than 75 degrees from parallel.
Three models available:
- SSC-60ST: Shade cover for CPS 36/50/60kW, and 25kW-208V inverters.
- SSC-100ST: Shade cover for CPS SCA100K (1000Vdc) inverters.
- SA-25 Kit: Shade cover & racking legs for CPS 25kW-480V inverters.
To provide racking solutions for mounting CPS inverters on rooftops, CPS has developed custom tilt racking kits for use with our 1000Vdc string inverters. The racks enable inverters to be mounted “almost flat” with a 15-degree tilt angle against the horizontal plane.
Three models available:
- SA-25 Kit for 1000V applications using CPS 25kW-480V inverters. Includes shade cover.
- SR-60 Kit for 1000V applications using CPS 25kW-208V, 36kW, and 50/60kW inverters.
- SR-100 Kit for 1000V applications using CPS SCA100K (1000Vdc) inverters.
The Y-Comb Terminal Block allows for conductors carrying more than 20A to be landed in the wirebox of the 50/60kW 1000V inverters and the 100/125kW 1500V inverters.
These adaptors distribute the current between two adjacent fuseholders to provide better thermal performance.
Two kits available:
- BTH100 for 1000V applications in the CPS 50/60kW inverters.
- BTH200 for 1500V applications in the CPS 100/125kW inverters.
Locking disconnect covers reduce random tampering by passers-by in a publicly accessible install environment such as a bank or school. Installers need to verify code compliance with local AHJs and Inspectors.
Benefits:
- Eliminate a truck roll to reset the inverter when turned off by accident
- One key works for all
- Easy key management with a marked key box on the site
Accessories for String Inverters
CPS offers padmount MV Transformers as part of the TotalBOSS solutions for use with CPS string inverter and CPS AC Combiners in the US commercial & utility-scale solar PV market.
Standard MV Transformers available:
- 2.2MVA, 600Vac input MV Transformer
- 2.75MVA, 600Vac input MV Transformer
- 3.3MVA, 600Vac input MV Transformer
Fuse Bypass Terminals enable:
- Larger single conductors to be terminated at each MPPT within the wirebox, bypassing the input fuses
- Reducing the number of DC homeruns to the inverters
- Retrofit applications with combined DC strings
Fuse Bypass Terminal Kits available:
- 36/50/60kW Fuse Bypass Terminal Kit – Includes 6 Bypass Terminals (3 pairs)
- 1000V 100kW Fuse Bypass Terminal Kit – Include 6 Bypass Terminals
The CPS AC-PLC KIT 800V/US is designed for the implementation of power line communication (PLC) over the AC conductors on the low-voltage side of a PV system enabling a low-cost and reliable solution for data communication and control of the 275KTL or 350KTL inverters. At the signal source side, the PLC modulation device inside the CPS AC-PLC KIT transforms the data to be transmitted into high-frequency signals through a series of operations such as encoding and modulation, and couples the high-frequency signals to the AC conductors through coupling circuits. At the receiver end within each 275KTL or 350KTL inverter, the PLC demodulation device separates and restores the modulated data carrier signals to their original form. The CPS AC-PLC KIT includes the FlexOM Gateway, DC power supply, and surge and over-current protection, all mounted and pre-wired in a weatherproof NEMA 4X enclosure.