第
22
页
共
25
页
Page 2 of 24
文件编号
File
Number
NDT2920020
版次
Edition
Number
第 0 版
Version
0
实施日期
Implementa
tion Date
20141212
11.2
报警触头的额定值（见表
13
、图
18
）
/Rated value of alarm contact (See Diagrams 13, 18)
表
13/Table 13
附件名称
/Accessory name
电压
Voltage(V)/
约定发热电流
Stipulated heating current(Ith)
报警触头
/Alarm
contact
AC250V/3A
DC220V/0.2A
图
18/Diagram 18
11.3
欠压脱扣器
/Undervoltage tripper
当电源电压下降到欠电压脱扣器的
35%
～
70%
范围内时，欠电压脱扣器能可靠分断断路器；当电源电压低于
欠电压脱扣器额定工作电压的
35%,
欠电压脱扣器能防止断路器闭合；当电源电压高于欠电压脱扣器额定工作电压
的
85%
时，欠电压脱扣器能保证断路器可靠闭合。
When power voltage declines to 35%
～
70% of the undervoltage tripper, the undervoltage tripper can reliably break
the breaker up; when power voltage is lower than the rated working voltage of undervoltage tripper by 35%, the
undervoltage tripper can prevent the breaker from closing; when power voltage is higher than the rated working voltage
of
undervoltage tripper by 85%, the undervoltage tripper can guarantee the reliable closure of breaker.
11.4
分励脱扣器
/Shunt tripper
分励脱扣器的外加电压介于额定控制电源电压的
70%
～
110%
之间时，能可靠分断断路器
/When external
voltage of shunt tripper is 70%
～
110% of the rated control power voltage, the breaker could be reliably opened
。
分、合
Breaking or closing
B1
B2
B4
B2
B4
B1
自由脱扣
Free tripping
