Basler Electric DECS-400 - Manual (Page 145)

9369700990 Rev R 133
Typical Interconnections
Figure 94 and Figure 95 illustrate typical interconnections for a DECS-400 used in an excitation system
with a Basler SSE-N (negative forcing) rectifier chassis. Figure 94 shows the ac connections and Figure
95 shows the dc connections. The following notes apply to those figures.
1. Switch is a momentary contact. Must be interlocked such that both contacts cannot close
simultaneously.
2. Exciter must not be in Stop mode when generator is on bus. Exciter should not be in Start condition
unless generator is up to speed and buildup can occur.
3. Interface Firing Module (IFM-150) is required for SSE-N systems. See IFM-150 instruction manual for
specific interconnection details.
4. Single CT is required for voltage regulator applications. A minimum of two CTs are required for PSS
applications.
5. For rectifier chassis interconnection, see instruction manual for the specific rectifier chassis used.
6. Dual dc power source is recommended. Station battery and separate 125 Vdc power supply shown.
7. Isolation power transformer is required.
8. DECS-400 output contacts RELAY #1 through #6 are customizable for specific system requirements.
9. DECS-400 switching inputs SW1 through SW10 are customizable for specific system requirements.
10. DECS-400 meter driver outputs are customizable for specific system requirements.
11. Accessory input can be configured to accept a current signal (4 – 20 mA) or voltage signal
(differential
±10 V range).
DECS-400 Installation