Capstone Microturbine C1000 Series User Manual

Capstone Turbine Corporation • 16640 Stagg Street • Van Nuys • CA 91406 • USA
Installation Guide: Capstone C1000S/C800S/C600S with C1000 Series Controller
480064 Rev C (December 2018) Page 78 of 122
Capstone reserves the right to change or modify, without notice, the design, specifications, and/or contents of this document without
incurring any obligation either with respect to equipment previously sold or in the process of construction.
7.5. Grid Connect Mode
NOTE
Not all of the allowable utility service connections for the various microturbine
operating modes are presented in this document. Consult your local Capstone
Turbine authorized distributor if your utility service connections do not agree with
those presented in this document.
Grid Connect mode provides alternating current (AC) electrical power in parallel with a utility grid
or with another generation source. Grid Connect mode includes built-in utility-synchronization
capability and protective relay functions. In this mode the microturbine acts as a current source,
controlling its current output to meet the commanded power output at the rated voltage.
In grid-parallel applications with variable electric loads, economics or utility restrictions may
require that no power, or limited power, be exported to the utility. This requirement can be met
using an external power meter. Using power meter signals, a turbine can dynamically adjust its
output power level to ensure that limited or zero power flows back to the utility. This application is
called Load Following.
7.5.1. Grid Connections
7.5.1.1. Grid Connect Allowable Configurations
See Figure 31 through Figure 38 for examples of allowable microturbine grid connections.
Examples of CE and UL systems are shown for each type of grid connection. Table 14 provides
a list of allowable configurations.
Table 14. Grid Connect Allowable Configurations Matrix
Figure
No.
Standards
Compliance
Service Entrance
Transformer
Microturbine
Transformer Type
Comments
UL1741
CE
Wye
Delta
1
X
X
N/A
2
X
X
N/A
3
X
X
Wye/Wye Isolation
Isolation transformer can
be used as step-up/step-
down to meet voltage
requirements
4
X
X
Wye/Wye Isolation
Isolation transformer can
be used as step-up/step-
down to meet voltage
requirements
5
X
X
Delta/Wye Isolation
Service entrance
transformer (delta) can be
ungrounded with ground
fault protection, corner
grounded, or center tapped
grounded

Capstone Microturbine C1000 Series Specifications

General

Brand	Capstone
Model	Microturbine C1000 Series
Category	Controller
Language	English