英勒科SRFT-4-2Z保持防跳继电器型号含义

一、产品介绍

SRFT系列防跳继电器用于各种保护和自动控制装置中，增加保护和控制回路触点数量和触点容量。

本系列防跳继电器为电子控制模拟继电器，采用光耦隔离使密封中间继电器动作。需要辅助电源。

(适用于交流50/60Hz)

SRFT series of anti-pump relays can be used in a variety of protection and automation devices toincrease the number and capacity of contactsin loop protection and control.As electronically controlled analogue relays, this type of relays adopts optical coupling ***lation to enable the sealed middle relays to act. Auxiliary power supplyis needed. (Are used in AC 50/60Hz)

二、技术参数

动作值Action Value:50%额定电压值NominalVoltage

50%额定电流值NominalCurrent

保持值Maintain Value:电压保持绕组Voltage keep winding:50%额定电压NominalVoltage

电流保持绕组Current keep winding:50%额定电流 NominalCurren

返回值Return Values:50%额定值NominalValues

功耗PowerConsumption:电压绕组Voltage keep:<1.2W

电流绕组Currentkeep:<2W

辅助电源Auxiliary power:<3W

热稳定性ThermalStability:环境温度+55°℃时，电压绕组长时期承受110%额定电压温升不超过65°℃，电流绕组能长时间承受三倍额定电流

When the ambient temperature is above 55C, The temperature of the voltage winding does not exceed 65C at110% of the nominal

voltage for along time, and the current winding can sustain three times of the nominal current for along time.

触点容量ContactCapacity:在电压不大于250V时:触点长期接通电流为5A;在电压不大于250V时:电路时间常数L/R为5mS的直

流电路中，触点断开容量为50W;在电压不大于250V时:功率因数COS6为0.4的交流电路中，触点断开容量为250VA。

When the voltage is less than 250V, the continuous current o f the contacts is 5A; When the voltage is less than 250Vand time

constant L/R is 5mSin the DC circuit, the switching capacity of the contacts is 50W;When the voltage is less than 250V and the

power factor COSpis 0.4 in the AC circuit, the switching capacity of the contacts is 250VA.

介质强度DielectricStrength:继电器各引出端子与外壳之间，应能承受50Hz、2KV，历时1分钟耐压试验而无击穿或闪络现象

50Hz, 2Kv, 1 minute between each of the contactsand the casing, and no sign of breakdown or flashover is detected.

环境温度AmbientTemperature:-25°C~55C

U型35导轨安装Mounting On profile railType U 35

三、规格及型号

SRFT -1- 2H2D

   ①    ②    ③

①SRFT系列防跳继电器 SRFTSeries of Anti-pump Relays

②分类编号Numbersfor Different Categories:

1、一个电压绕组，一个电流绕组，均可作为工作绕组和保持绕组

2、一个电压工作绕组，两个电流保持绕组

3、一个电流工作绕组，一个电压工作绕组，一个电流保持绕组，动作时间0.045秒以下。

4、一个电压工作绕组，三个电流保持绕组。

1.One voltage winding and one current winding, both of which

can serve as operate and holding windings.

2.One voltage operate winding and two current holding windings.

3.One current operate winding, one voltage operate winding, one

current holding winding, and the acting time is less than 0.045s.

4.One voltage operate winding and three current holding windings.

③触点形式ContactArrangement:2Z、2H2D

特殊型号:SRFT-1B为电压启动，电流保持继电器。

四、接线图

五、外形尺寸图