Wenzhou Ginri Power Automation Co., Ltd.
Wenzhou Ginri Power Automation Co., Ltd.
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Phase sequence Three Phase Voltage Monitoring Relay Miniature voltage relay
Sampling three-phase power supply and processing, in the case of phase sequence of the power supply phase sequence and protector terminal input, the output relay is turned on, the device main control circuit is connected. The existing two types of products are: when the phase sequence of the power supply changes, the phase sequence does not match, and the output relay cannot be turned on, thereby protecting the equipment and avoiding the occurrence of accidents; the other type uses digital micro-core technology products and can realize automatic Phase sequence recognition, and automatic phase sequence conversion, to ensure that the motor rotates in a constant phase sequence.
The three-phase power supply is connected to the three connection points U, V, W (some R, S, T or L1, L2, and L3) of the protector in turn, and the auxiliary contacts of the phase sequence protector generally have a normally open and normally closed state. In the access control loop, it is connected normally or normally closed according to the control principle or wiring diagram. When the phase sequence is wrong or the phase is missing, the auxiliary contact action of the protector is normally open, normally closed, and normally closed. . If it plays a protective role, it should be normally closed contacts.
♦ Features
-- Built-in LCD and keypad afford a precise,digital setting
-- Three-phase monitoring of phase sequence, phase loss, over- and undervoltage and phase unbalance
-- Adjustable over- and undervoltage, phase unbalance threshold
-- Independent adjustable delay time for overvoltage, undervoltage, phase unbalance
-- Powered by the measuring circuit
-- 1 NO & 1NC contacts
-- Faulure recording
♦ Protective Functions
-- Phase sequence
-- Phase loss
-- Phase unbalance
-- Overvoltage
-- Undervoltage
♦ Typical Applications
• Pumps • Fans
• Blowers • Motors
• Compressors
♦ Approvals
• CE • CCC
♦ Technical data
| Type | JVR1000 |
| Measuring circuit | L1,L2,L3 |
| Rated voltage | 380VAC ,50Hz |
| Monitoring functions | phase sequence, phase loss, overvolatege, undervoltage,phase unbalance |
| Overvoltage setting range | 390-490V adjustable |
| Undervoltage setting range | 300-470V adjustable |
| Hysteresis | 10V |
| Delay time for overvoltage and undervoltage | 0.1-25s adjustable |
| Phase unbalance setting range | 5%-29% adjustable |
| Delay time for phase unbalance | 1-25s adjustable |
| Delay time for phase loss | 1s |
| Delay time for phase sequence | instant |
| Indicators | LCD indicating voltage,current,operation status |
| Output contacts | 1 NO,1NC |
| Contact capacity | 6A ,250VAC |
| Dimensions (H x W x D) | 80×40×54mm |
| Mounting | DIN rail |
