GE SecoGear User Manual

SecoGear 24kV-27kV Air Insulation Switchgear
23
Routine inspection includes:
• Check compartment doors are closed properly
• Verify the control voltage, auxiliary voltage and battery
voltage are in normal condition
• The status indication and position indication for the circuit
breaker and earthing switch etc are normal
• Check ammeter and voltmeter on the display
• Check relay indications. (The power indication should be on
and fault indication
should be off.)
• Check alarm and pre alarm indications
• Partial discharge should not occur on the surfaces of
equipment at operating voltage. This can, for example, be
detected by characteristic noises, a clearly perceptible smell
of ozone, or visible glowing in the dark;
• Check the heater condition, if installed. The relay monitoring
the heater current is in the low voltage compartment. Check
th
e heater circuit if the red current indication turn off due to
the heater losing power supply. (see figure 5/1)
Heater current
indication
Figure 5/1: Heater current monitoring relay
If any abnormal condition is found, then the cause must be
identified in order to restore normal condition.
Service
Safety measure: The power must be shutdown before
scheduled switchgear service, and the work area
must be isolated. Measures must be taken to disallow
the power being switched on. Ensure proper earthing
and padlocks in place. Specially trained personnel are
required to supervise.
It is recommeded to inspect the circuit breaker every 6
months if in stand-by for a significant period of time.
The purpo
se for the service is to guarantee the operation quality
of the switchgear and avoid any possible malfunctions. This
increases the life of the switchgear. The scope of work is as
follows:
• Inspection: Determination of the actual condition
• Servicing: Measures to preserve the specified condition
• Repair: Measures to restore the specified condition
The service interval for the switchgear depends on ext
ernal
factors including the operating environment, the operation
frequency and service age etc.
It is recommended to have switchgear serviced
every 2-3 years, if installed in good environment and
not frequently operated.
It is recommended to have switchgear serviced
every year, if operated more than 10 times a month.
It is recommended to have switchgear serviced
every half year, if installed in adve
rse environment
and frequently operated.
It is recommended to have the circuit breaker
replaced, if reached its mechanicall operating cycles
or rated short circuit breaking times.

GE SecoGear Specifications

General

Brand	GE
Model	SecoGear
Category	Switch
Language	English