四川中光防雷科技股份有限公司
English
搜索
Products
ZGGH20-275
General                                                                                 
ZGGH20-275 Modular Power Supply SPD consists of a ZGGH20-275MK power module and a ZGGH20-DZ1 base, used for the secondary or tertiary protection of L -N and L /N-PE of AC systems. It is connected between the AC power supply and system equipment in series or in parallel. It can prevent the equipment from the impulse surge and transient overvoltage caused by the outside environment (such as lightning, EMI, etc.) or by the system (such as switching effects of the system, startup or shutoff of the inductance and capacitance load, etc.).

Features                                                                                 
1. Anti-reverse protection on the module.
2. Low residual voltage.
3. Overtemperature protection.
4. Failure indication and centralized remote signalling alarm dry contacts.
5. Enclosure IP20, UL94 V0.

Standards Complied                                                                             
IEC 61643-1: 2005 Low-voltage surge protective devices –Part 1: Surge protective devices connected to low-voltage power distribution systems –Requirements and tests
UL 1449 Surge Protective Devices

Technical Data                                                                             
Operating Environment                                                                         
Temperature
-40℃～80℃
Relative humidity
5 %～95 %
Altitude
-500 m～﹢3000 m
Technical Parameters
Model
ZGGH20-275
SPD According to IEC 61643-1
Class Ⅱ, Class Ⅲ
SPD According to EN 61643-11
Type 2, Type 3
Max. continuous operating voltage Uc 
275 V
Operating frequency
50/60 Hz
Nominal discharge current In (8/20 μs)
10 kA
Max. discharge current Imax (8/20 μs)
20 kA
Level Ⅱ voltage protection Up 
L-N: 1.5 kV; L/N-PE: 1.8 kV
Compound wave Uoc
20 kV
Limiting voltage (6 kV 1.2/50 μs, 3 kA 8/20 μs)
L-N: 1.1 kV; L/N-PE: 1.1 kV
Level Ⅲ voltage protection Up                 
L-N: 1.5 kV; L/N-PE: 1.5 kV
Rated load current IL   
25 A
Prepositioned fuse
≤ 25 A gL/gG
Connection mode
In series; In parallel
Protection mode
L-N, L/N-PE
Response time  tA  
L-N: ≤ 25 ns; L/N-PE: ≤ 100ns
Cross-sectional area of connecting terminals
Multicore: 0.2 mm2～2.5 mm2
Single-core: 0.2 mm2～4 mm2
Cross-sectional area of the remote signalling interface (max.) 
2.5 mm2
Intensity of the remote signalling alarm contact
AC: 250 V/0.75 A 125 V/3 A DC: 30 V/2 A
Torque: connecting terminal
1.0 N•m
Enclosure degree of protection (IP code)
IP 20
Installation system
TN
Dimensions
90 mm×18 mm×69 mm
(excluding remote signalling terminals)
Mounting on
DIN 35 mm rail
Flammability
UL 94 V-0

Circuit diagram                                                                     
Configuration