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Changsha Guotong Electrical Technology Co., Ltd.

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 Changsha Guotong Electrical Technology Co., Ltd.

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Current:Home » Product Categories » » GTT-821 Transformer overload protection device
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GTT-821 Transformer overload protection device
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Product:
Brand: aa 
Price: 3000.00USD/ 
MOQ: 1  
Total supply:
Delivery time: From the date of payment from the buyer within days of delivery
update time: 2023-02-22 01:00  Valid to:Long-term effective
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1.  Scope of Application

GTT-8XX series digital transformer protection measurement and control device, mainly applies to 110kV and the following various voltage levels two / three coil transformer protection device. GTT-84(2) X series device includes: GTT-84(2)1 differential protection device, GTT-84(2)2 high backup protection measurement and control device is composed of transformer protection system.

 

2.  Function and Characteristics

Functional Configuration Table

Classify

Function Name

84(2)1

822

842

84(2)3

Protection

Function

Sent velocity broken

 

 

 

Percentage differential protection(secondary harmonic restraint)

 

 

 

TA disconnexion blocking percentage differential protection

 

 

 

The differential current limit alarm

 

 

 

Compound voltage blocking Two sections of three time overcurrent protection

 

Overcurrent inverse time lag

 

Negative sequence over current

 

Overload

 

Overload blocking voltage regulation

 

Overload start air-cooled

 

Proper signal

 

 

Transformer tap position and on-load voltage regulation

 

 

 

Zero-sequence voltage protection

 

A three zero-sequence current protection

 

 

 

Composite voltage components

 

TV disconnection detect

 

Operation

circuit

Power independent containing anti adjustable locking function operation circuit

 

Control circuit abnormal alarm

 

Measurement

And

Control

Function

16 way remote signal input, device remote signal shift, accident remote signal

Normal circuit break remote deciliter

P, Q, IA, IB, IC, Ua, Ub, Uc, COSΦ, f

 

Switch accident in statistics and event SOE etc

Fault recorder

Time hack

Realize GPS time hack,network time hack

Communication

Ethernet, RS232/485 communication interface

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