JCH-1A type reclosing relayDetailed product description：

Purpose:
JCH-1A reclosing relay is used for automatic reclosing in transmission lines. If the fault is temporary, it can be restored to operation. If the fault is permanent, it will trip again after overlapping.

Relay model name:


Working Principle:
Relays are composed of electronic components such as transistors, voltage regulators, operational amplifiers, resistors, capacitors, and intermediate relays. All components are installed on a printed circuit board. There are time setting dial switches and DIP switches installed on the nameplate of the relay.
Relays are composed of integrated circuits and electronic components. The delay time setting circuit adopts the linear integral timing principle, and the preparation time for one closing circuit adopts the RC charging timing principle. The principle diagram is shown in Figure 1.
The delay setting circuit adopts two 8421 code digital dial switches and DIP switches for setting. The K1 dial switch time is set to (1-9) seconds, and the K2 dial switch time is set to (0.1-0.9) seconds. The formula for time setting is t=tn * (1+M.N)+10ms. Tn is the data of DIP switch, MN is the data of K1 and K2, as shown in Figure 2.
After the relay is powered on, the RC in the closing circuit starts charging. After (17-25) seconds, the preparation light comes on and the relay is in the preparation closing state. After the delay setting of the closing start signal, a closing circuit is triggered, the outlet relay is activated, and self-protection is carried out by the current coil.



Main technical parameters:
6.1 Rated voltage: DC 110V, 220V.
6.2 Closing current: 0.5A, 1A, 2A, 4A.
6.3 Delay range: 0.11s-17.45s, with a grading difference of 0.1s.
6.4 Relay delay setting value with a delay consistency of less than 1 second shall have an absolute value of no more than 20ms. The relative value of delay consistency with a delay consistency of no less than 1 second shall not exceed 1%.
6.5 The minimum holding current is 50% of the rated value.
6.6 The interval between one reclosing is between 17-25 seconds.
6.7 Closing pulse width 200ms (positive and negative deviation 20ms).
6.8 The relay can start the reclosing time setting circuit for positive and negative power sources (determined by user requirements) and lock the reclosing circuit for negative power sources. The delay setting circuit adopts two 8421 code digital dial switches and DIP switches for setting. The K1 dial switch time is set to (1-9) seconds, and the K2 dial switch time is set to (0.1-0.9) seconds. The formula for time setting is t=tn * (1+M.N)+10ms. Tn is the data of DIP switch, MN is the data of K1 and K2, as shown in Figure 2.
6.9 Power consumption
See figure
The dynamic contact of the 6.10 electric life relay should be able to disconnect no more than 250V and no more than 1A, and the contact should reliably operate no less than 1000 times in a DC circuit with a capacity of 30W and an inductive load (time constant 5ms ± 0.75ms). The long-term allowable current for connection is 2A, and the allowable time for the current self-protection circuit at rated current is 10s.
6.11 The following parts of the dielectric strength relay should be able to withstand an effective value of the AC voltage specified in the table below, with a frequency of 50Hz, for 1 minute without breakdown or flashover.
6.12 The anti-interference performance complies with the provisions of ZBK-33004 "General Technical Conditions for Automatic Electrical Appliances and Devices for Power System Protection".

JCH-1A type reclosing relay back wiring diagram:




JCH-1A type reclosing relay external dimensions and opening dimensions:

Refer to Figures 2 and 6 in the protruding modular insertion structure.

Ordering instructions:
8.1 Indicate the model, rated voltage, and closing current of the relay.
8.2 Polarity of starting voltage (starting from positive or negative power supply).

JCH-1A type reclosing relay（No image available）