Ring Main Circuit Breaker - P&C Technologies Co., Ltd.

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P&C Technologies Co., Ltd.
[Korea]

Address:
#304, AnyangMegavalley, 799, Kwanyang-dong, Dongahn-gu, Anyang-si, Gyeonggi-do 431-767 Korea

Phone:
82-2-22408190

Contact name:
Deuy Park , Overseas & Marketing Manager

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Overview

PNC-GGS Ring Main Circuit Breaker is pad mounted fully deadfront switchgear for up to 25.8kV, 630A underground system, combining puffer load break switches and vacuum fault interrupters. PNC-GGS series switchgear incorporates grounding switches for every ways to provide added safety and faster operation.
Every bushing in this switchgear is installed with one set of CT and voltage sensor each, so all the electrical values of connected distribution system can be measured. And, combined with RTU and Protection Relay integrated control, FTU-RC100, this switchgear can be remotely operated from control center system (SCADA).
PNC-GGS series Ring Main Circuit Breaker has been fully certified in accordance with IEC 60265-1, ANSI C37.60 (1981) and ANSI/IEEE C37.71 (1984) to meet and exceed customer specifications.

Electrical Characteristics

Description		PNC-GRC44-12/T630	PNC-GRC44-24/T630
Maximum System Voltage		12 kV	25.8 kV
Rated Continuous Current		630 A	630 A
Electrical Operating Time of CB (Close/Open) Electrical Operating Time of LBS (Close/Open)		70/30 ms 700 ms each	70/30 ms 700 ms each
Minimum Clearing Time of CB		2.7 cycle	2.7 cycle
Number of Mechanical Operations of CB Number of Mechanical Operations of LBS Number of Mechanical Operations of Ground		10,000 times 5,000 times 1,000 times	10,000 times 5,000 times 1,000 times
Short Time Withstand Current ( rms)		20 kA (4 sec)	12.5 kA (1 sec)
Breaking Capacity of LBS	Mainly Active Load Current	630 A	630 A
	Cable Charging Current Breaking	25 A	25 A
	Magnetizing Current Breaking	21 A	21 A
	Line Charging Current Breaking	1.5 A	1.5 A
	Closed Loop Breaking Current	630 A	630 A
Breaking Capacity of CB		20 kA	12.5kA
Insulation Level	Lightning Impulse Withstand Voltage	85 kV BIL	125 kV BIL
	Power Frequency Withstand Voltage	42 kV	60 kV
	DC Voltage Withstand Voltage	53 kV	78 kV
	Partial Discharge Extinction Level	19 kV	19 kV
Weight without Outer Enclosure		670 Kg (2CB 2SW)