Capstone Microturbine C1000 Series - Figure 38. Delta Service with Grounding Transformer and 4-Pole Breaker

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 87 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.
Figure 38. Delta Service with Grounding Transformer and 4-Pole Breaker
NOTE
3-wire delta utility service connections require a grounding (zig zag) transformer,
as phase-to-ground voltages float and, over time, become unbalanced with
respect to ground which causes microturbine nuisance trips. In addition, the
phase-to-ground voltages reach levels that can break the insulation in the
IGBTs-to-ground and cause equipment failure. Capstone Applications approval
is required for grounding transformer applications.
7.5.1.2. Examples of Single Line Diagrams
See Figure 39 through Figure 41 for Grid Connect installation single line diagrams for multiple
microturbines.