product details
product overview
ZHHV261 the series of comprehensive protection devices is a new generation of microcomputer-based relay protection equipment specially developed to meet the relay protection requirements of power plants, substations, distribution stations, etc. in the power system. to 35 KV primary equipment such as overhead lines, cable lines, transformers, and capacitors with voltage levels of and below provide complete protection functions. they can be installed locally in switch cabinets or can be installed in a centralized panel. the perfect design ensures that the device can operate reliably for a long time in harsh environments.
device function configuration
1quick break protection:
2three-stage overcurrent protection (inverse time limit action can be selected for overcurrent stage 3 )：
3.post-acceleration protection:
4charging protection:
5.overload protection (alarm or trip optional):
6.large current blocking function (for load switch):
7inrush blocking function:
8.three-stage zero-sequence overcurrent protection (alarm or trip is optional, and inverse time limit action is optional for zero sequence overcurrent stage 3. )：
9.negative sequence overcurrent protection (how to choose alarm or trip):
10.reclosing:
11overvoltage, low voltage (alarm or trip optional):
12.voltage loss protection (alarm or trip optional):
13.zero sequence overvoltage (alarm or trip optional):
14.incoming line preparation for automatic transmission (can be prepared for investment and self-recovery )：
15.PT disconnection alarm, CT disconnection alarm:
16.no energy storage alarm:
17non-electricity: heavy gas trip, light gas alarm, over-temperature trip, high temperature alarm, pressure release trip, door-open trip:
18.control loop disconnection alarm:
19.automatic reset function:
20.communication function: RS-485 interface (communication protocol optional 1 EC-101 or Modbus):
technical parameters
1.working environment conditions
ambient temperature: -10 ~+55℃
relative humidity: no more than 95%, no condensation
atmospheric pressure: 86 ~106kPa
other conditions: the air around the device should not contain acid, alkali corrosion or explosion.
non-toxic materials and equipped with lightning, rain and snow protection facilities
standard atmospheric conditions for the test:
ambient temperature: +15~+35℃
relative humidity: 45%-75%
atmospheric pressure: 86 ~106kPa
storage and transportation: -25 ~+70℃
2.rated electrical parameters
working power supply: AC/DC100-264V
rated current: ac 5 A, or exchange 1 A（ please indicate when ordering)
rated voltage: ac 100 V(line voltage, or phase voltage 57.7 V（ phase voltage)
frequency: 50 Hz
