doble TDR9000 - Ehv; Event; Figure 2.5 EHV Module Configuration

TDR9000
™
Circuit Breaker Test System User’s Guide
72A-1898 Rev. A 11/01 2-7
Monday, November 26, 2001 1:09 pm
EHV
The EHV module measures:
• Main Contact timing of a Live Tank circuit breaker
• Pre-insertion resistor switch timing
• Capacitance of grading capacitors (optional)
• Ohmic value of pre-insertion resistors (optional)
The software supports two configuration choices:
EHV Measures two breaks per phase on all three phases
(6 contacts).
Split Tests breakers with odd numbers of interrupters per
phase, or activates and tests one contact at a time
in a module.
Figure 2.5 gives the available configurations for the EHV module.
Figure 2.5 EHV Module Configuration
Event
The Event module is split into two parts:
• Analog channels
• Auxiliary contacts
A combination of these channels is used to monitor the characteristics of
the circuit breaker’s operating mechanism. All the channels are used
when performing First Trip/Close tests.