Voltage Limiter

Specifications Voltage Limiter

1. LDY-20C/Y3C

2. without air-break switch

3. Un: 220V, Uc: 385V, Up: <1.8kV

4. In: 20kA, Imax: 40kA

Voltage Limiter   Application range These series are applied to equipotential bonding of the low voltage main or distribution boxes in the building, providing protection against the overvoltage arising from the lightning strike to power supply or faulty operation.(option from standard IEC61643-1 and GB50343)   Main Feature: Convenient wiring standard connection components Build-in temperature control and circuit breaking technology, high security performance Green light in notice window indicates normal, red indicates broken, replacement notice, which are clear and easy distinguished Function of lightning count capable of storage and display of lightning frequency Display status of normal on and off Totally-enclosed metal shell good shielding effectiveness free maintenance   Main technical data

Type	LDY-20C			LDY-40B
Suffix	/Y3C		/Y5C	/Y3C	/Y5C
Nominal operating voltage Un V	220		380	220	380
Max. continuous operating voltage Uc V	385			385
Voltage protection level Up kV	<1.8			<2.0
Nominal discharge current In (8/20μs) kA	20			40
Max. discharge current Imax (8/20μs) kA	40			80
Backup protective breaker	40A/2P	40A/4P		63A/2P	63A/4P
Protection modes	2P	3P+N		2P	3P+N
Response time tA	< 25 ns
Housing material	Aluminum alloy
Starting current	≥400A
Counting range	0-99
Leakage current 75% Uc 1mA	≤ 20 μA
Cross-section	≥ 10 mm2 stranded/flexible conductor