DHC-X series phase loss and phase sequence protection relayDetailed product description：

The DHC X series phase loss and phase sequence protection relay is used in conjunction with an AC contactor for the phase mismatch of three-phase power supplies in AC 380V Lack of phase Motor protection against phase voltage imbalance and overvoltage/undervoltage

Adopting voltage sampling method It is independent of the power of the motor
Series products There are multiple different functions to choose from To achieve different protection purposes
Installation method of guide rail International standard installation dimensions
SMT process
Reliable performance Beautiful appearance High performance price ratio

function	DHC1X Phase sequence protector (RSTC)	DHC2X 3-phase 3-wire phase sequence protector for phase loss	DHC2X-T 3-phase 3-wire phase sequence protector for phase loss	DHC2X-N 3-phase 4-wire phase sequence protector with missing phase	DHC1X-T Phase voltage phase sequence protector (RSTB)
Phase sequence error	Immediate action	Immediate action	Immediate action	Immediate action	Immediate action
Failed to start due to phase loss	√	√	√	√	√
Phase loss and disconnection		√	√	√	√
10% overvoltage/undervoltage detection					√ Voltage fine-tuning is available
3 phases and 3 wires	√	√	√		√
3 phases and 4 wires				√
Sensitivity adjustment		10% fixed	5%~20%	5%~20%
action delay	0.1S	3S	1-10S	0.2S	1-10S
Applicable to	Phase sequence error protection. It can also be used for three-phase phase loss protection of motors that start frequently	It is a simplified version of DHC2X-T's features	Phase sequence error protection and phase loss protection for 3-phase 3-wire motors	Phase sequence error protection and phase loss protection for 3-phase 4-wire motors	Three phase imbalance, undervoltage, overvoltage, and undervoltage and overvoltage protection for each phase. And phase loss protection