YD-852 Micro-computer Based Generator Rotor Protection Device, China Suppliers and Manufacturers

YD-852 Micro-computer Based Generator Rotor Protection Device

Supplier Info

Chongqing Yueda Electric Equipment Co., Ltd.

[China Supplier]

Contact Person : Ms. Du Jean

Tel : 86-23-86973095

Fax : 86-23-86973092

Product Detail

1. modularization design 2. strong communication capacity 3. supporting various generally applied communication protocols .

YD-852 microcomputer based generator rotor protection device integrates protecting, measuring and controlling, which can be used to realize backup protection for turbo-generator, hydro-generator and gas-burning generator. It has functions of tele-control, tele-metering, tele-signaling and tele-adjusting.

Measuring and controlling functions

1. One point of generator rotor earthing protection

2. Two points of generator rotor earthing protection

3. Filed failure protection

4. Over –excitation protection

5. Voltage-loss protection

6. Non-electric quantity protection

7. 8 sets of protective setting group

Technical parameter

Type	Element	Parameter
Rated parameter	DC power supply	220V or 110V
	AC voltage	57.7V or 100V
	AC current	5A or 1A
	Frequency	50Hz
Power consumption	DC current loop	≤10W
	AC voltage loop	< 0.5VA per phase
	AC current loop	<1VA per phase (In=5A)
	AC current loop	<0.5VA per phase(In=1A)
Overload capacity	AC current loop	2 times rated current, continuously work
		10 times rated current allowing 10s
		40 times rated current allowing 1s
	AC voltage loop	1.1 times rated voltage, continuously work
	DC power supply loop	80%~110% rated voltage, continuously work
Work range	current	0.05In~20In(In=5A, 10A)
	voltage	0.4V~180V
	frequency	45Hz~55Hz
	Df/dt	0.5Hz/s~10Hz/s
	time	0~99.9S
Rated error range	current and voltage	<±3% rated value
	frequency rapid-break protection	<0.01Hz
	percentage differential protection	<±1% rated time+35ms
Protection time range	Over-current protection	rapid-break time < 30ms at 2 times
	Differential rapid protection	motion time < 20ms at 1.5 times rated value
	Percentage differential protection	<30ms at 2 times rated value;
Work environment	Normal work temperature	-20°C~+50°C
	Extreme work temperature	-40°C~+70°C
	Relative humility	≤95% 25°C
	atmosphere pressure	80~110Kpa(below 2000m)
Tele-metering class	voltage, current, frequency	0.2 class
	other elements	0.5 class
	tele-signaling resolution	<2ms
	signal input way	electrical independent contact