Product Details
Multi - Function Motor Switching Relay , Electric Motor Relay
Adjusted Acting Time
1. Products Description:
Distribution board in middle/small vessel mainly use frame-type
circuit breaker as generator's protection switch, have shortage of
expensive cost, big volume, heavy and difficult to adjust, etc.
WD-DB-A is a multi-functional protection equipment for marine,
widely used in kinds of type/power generator group, only need input
generator's power and curcuit's transformer, protection can set
data of "pre-alarm" "long-time delay", "short time delay" according
to requirements.
Acting time can also be adjusted, LED indicate voltage, current and
lasting time.
2. Technical Parameters
Product Name | Generator Protection Units |
Model Number | DB-A |
Dimension | 146*90*73mm |
Measurement(V) | AC100-600V |
Measurement(Hz) | 50-60Hz |
Mounting | DIN Rail or 5mm Thread |
3. Technical Symbol:
"I" Current: Display the biggest phase current, connect any phase
to start to work;
"U" Voltage: Display phase voltage to generator;
"U" < under voltage: Phase voltage less than preset value;
"I" ≈ Pre-alarm LED: ;Load current over preset value;
"I" > Long-time delay LED: Load current over preset value;
"I" < Short-time delay LED: Load current over preset value.
4. Technical Function:

5. Wiring Diagram

6. Our Advantage:
1). Guarantee of high quality
- Certification of ISO9001:2000, CE, CCS;
- Strict quality control to the whole producing process;
- We are manufacturer, to make sure the first hand materials;
- Semi-finished products check and overall inspection;
- Finished product check and overall inspection;
- Reliable packing
2). Customized Producing
Because of the source manufacturer, it is able for us to produce
the items according to customers' requirements.
3). Reliable Team
- Excellent technical team, always ready for questions from
customers' side;
- Professional sales team, could make good suggestion in model
selection and any markets news sharing;
- Management team: A held meeting held each months, to discuss sales
& technical problems, to promote each other;
- Afterservice: 7*24 hours to answer and face any questions.
Company Profile
Wei Dian Union(Hubei) Technology Co.,Ltd.
Wei Dian Union(Hubei) Technology Co.,Ltd. Located in Optics Valley
of China--- Wuhan East lake high-tech development Zone, established
in 2008, with factory area of 50002 and 120 employees, We are the member of National Standardization
Committee for Electric Meters & Instruments.
Wei Dian Union are specialized in manufacturing electric measuring
instrument and current transformer with a concentration in R&D,
Production, sales & after sales, which guarantee us strictly
comply with standard of GB/T22264-2008 & GB/T7676-98 to
operate. Now , we have ISO9001-2008 certificate, digital meter have
passed CE, while marine meter approved by China Classification
Society (CCS).
Our products are widely used in transmission & distribution
power system of shipping, aviation, railway, oil, chemistry,
metallurgy, electric, power station, intelligent building,
industrial instrument, etc.
Weidian Union has a great team to service domestic & overseas
customers. With the help of university, our technical department
are able to share with the newest techonology to promote upgrade of
products. Our sales team divided into domestic and international
sales, which help customers on pre-selling, sales and after
service, make sure to satisfy diversity demands from customers, the
team always ready in 7*24 hours. Producing & QC department:
Over 3 years' skilled workers,to fulfill the producing, assembling
and adjusting works.
With the principle of “Pursuing for precision and perfection,
unifying thinking and behavior ”, continuous exploration and
innovation to meet customers’ demands. Reliable quality and good
after-service receive more and more trust from users.