GFL631T-3 INSTRUMENT TRANSFORMER, GFL631T-3 Datasheet - Page 42

• Manufacturer Part Number: GFL631T-3
• Description: GROUND FAULT CURENT
• Manufacturer: INSTRUMENT TRANSFORMER

Specifications of GFL631T-3

• Accuracy: 15%
• Current Measuring Range Ac: 30A To 360A

36
Operation:
trip capacitors producing a steady state output trip voltage. The charge stored in these capacitor is available across
terminals # 12 (positive) and #14 (negative).
that terminals #6 is connected to terminal #7 and the batteries are fully charged. Terminals #6 and #7 can be connected
with a normally open relay contact operated by the ac power supply so that the oscillator is activated upon power failure.
The batteries charge continuously when power applied to the
while installed in the CTDB-6, we recommended that fully charged batteries be installed in the CTDB-6 unit prior to putting
the unit into service.
panel is pushed, the LED will illuminate if the Capacitor has minimum charge of 90 Vdc for the CTDB-6- 120, and 200 Vdc for
the CTDB-6-240. The push button should only be pressed long enough to observe the illumination of the LED. The push
button and LED does not indicate the present of ac voltage.
Servicing:
Never remove the clear plastic cover without this discharge procedure:
1. Remove the 120 Vac control power.
2. Remove the jumper , or open the relay contact , across terminals #6 and #7.
3. Discharge the capacitor trip device. (A 5 watt resistor of approximately 500 ohms across Terminal #12 and #14 can be
attempt to change batteries without following the discharge produce. Battery terminals voltages are not isolated from the
control and trip power.
service or maintenance of the CTDB-6 unit or trip system.
A battery operated oscillator circuit will maintain the charge on the capacitors for a minimum period of 3 days provided
A push button and led indicator are used to determine if the CTDB-6 is operationally ready. When the button on the front
Replace the 4 rechargeable 1.2 Volt Ni-Cad Cells according the battery manufactures recommended schedule. Never
The CTDB-6 unit will recharge itself if terminals #6 and #7 remain shorted! Follow the discharge procedure prior to any
Nominal ac volts is applied across terminals #8 and #10. This voltage is full wave bridge rectif ied and applied across the
used for this purpose)
USA, Canada, Asia, Latin America
Please refer to our website www.GEMultilin.com for more detailed contact information
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CTDB-6 Panel Layout
circuit . Since batteries can take up to 48 hours to charge
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Europe, Middle East , Africa
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