The difference between the watchdog demarcation circuit breaker and load switch.
The watchdog demarcation circuit breaker
NKZW20F-12/T630-20kA (4S) = a new generation of NKFZW28F-12/T630-20kA (4S)
A new generation of user boundary switch NKFZW28F-12/T630-20kA (4S) with the same property demarcation circuit breaker
看门狗分界断路器与负荷开关的区别
看门狗分界断路器NKZW20F-12/T630-20kA(4S) =新一代 NKFZW28F-12/T630-20kA(4S)
新一代用户分界开关 NKFZW28F-12/T630-20kA(4S) 与分界断路器性能相同
Main Technical Parameter 主要技术参数
|
REF序号
|
Project 项 目
|
Unit单 位
|
Values 数 值
|
|
1
|
rated voltage 额定电压
|
KV
|
12
|
|
2
|
rated frequency 额定频率
|
Hz
|
50
|
|
3
|
rated current 额定电流
|
A
|
630
|
|
4
|
rated short circuit breaking current 额定短路开断电流
|
KA
|
20
|
|
5
|
rated current peak tolerance (peak)
额定峰值耐受电流（峰值）
|
KA
|
50
|
|
6
|
rated short-time resistance current （4S）
额定短时耐受电流
|
KA
|
20
|
|
7
|
rated short circuit close current (peak)
额定短路关合电流（峰值）
|
KA
|
50
|
|
8
|
mechanical life times 机械寿命次数
|
times
|
10000
|
|
9
|
rated short-time open circuit current open circuit number 额定短时开断电流开断次数
|
|
30
|
|
10
|
power frequency withstand voltage （1min）：dry tried （ground / fracture ）
|
KV
|
42/48
|
|
11
|
lightning impulse withstand voltage (peak)relative/fracture 雷电冲击耐受电压（峰值）相间、相对/断口
|
KV
|
75/85
|
|
12
|
the rated operating sequence points 额定操作顺序
|
|
Off-0.3s-OnOff-180s-OnOff
|
|
13
|
AC220 auxiliary circuit of rated voltage V rated operating voltage 额定操作电压辅助回路额定电压
|
V
|
AC220
|
Old generation of user boundary switch
旧款看门狗分界负荷开关 FZW28F-12/T630-12.5kA(4S)
Main Technical Parameter 主要技术参数
|
REF序号
|
Project 项 目
|
Unit单 位
|
Values 数 值
|
|
1
|
rated voltage 额定电压
|
KV
|
12
|
|
2
|
rated frequency 额定频率
|
Hz
|
50
|
|
3
|
rated current 额定电流
|
A
|
630
|
|
4
|
rated short circuit breaking current 额定短路开断电流
|
KA
|
20
|
|
5
|
rated current peak tolerance (peak)
额定峰值耐受电流（峰值）
|
KA
|
50
|
|
6
|
rated short-time resistance current （4S）
额定短时耐受电流
|
KA
|
20
|
|
7
|
rated short circuit close current (peak)
额定短路关合电流（峰值）
|
KA
|
50
|
|
8
|
mechanical life times 机械寿命次数
|
times
|
10000
|
|
9
|
rated short-time open circuit current open circuit number 额定短时开断电流开断次数
|
|
30
|
|
10
|
power frequency withstand voltage （1min）：dry tried （ground / fracture ）
|
KV
|
42/48
|
|
11
|
lightning impulse withstand voltage (peak)relative/fracture 雷电冲击耐受电压（峰值）相间、相对/断口
|
KV
|
75/85
|
|
12
|
the rated operating sequence points 额定操作顺序
|
|
Off-0.3s-OnOff-180s-OnOff
|
|
13
|
AC220 auxiliary circuit of rated voltage V rated operating voltage 额定操作电压辅助回路额定电压
|
V
|
AC220
|
Support
