COMPONENTS

TEST PROCEDURES

 

RESULTS

 

 

Check for continuity of relay 2 with an

POWER

 

 

 

LEVEL

 

 

 

ohm-meter.

 

 

 

 

 

 

 

(Remove wire leads from relay 2 and

1

4 sec

18 sec

 

operate the unit.)

2

6 sec

16 sec

 

 

 

Relay 2

3

8 sec

14 sec

 

 

 

 

4

10 sec

12 sec

RELAY2

 

5

12 sec

10 sec

 

 

 

 

6

14 sec

8 sec

 

 

7

16 sec

6 sec

 

 

8

18 sec

4 sec

 

Figure 29

9

20 sec

2 sec

 

CAUTION : The relay connector

 

10

22 sec

0

 

2(White) and 5(Red) must be correctly

 

connected Relay 6.

 

 

 

 

These two connectors are not Inter-

 

 

 

 

changeable.

 

 

 

NOTES:

A MICROWAVE ENERGY TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS SERVICED FOR ANY REASON.

MAKE SURE THE WIRE LEADS ARE IN THE CORRECT POSITION.

WHEN REMOVING THE WIRE LEADS FROM THE PARTS, BE SURE TO GRASP THE CONNECTOR, NOT THE WIRES.

B. CHECKOUT PROCEDURES

(1) CHECKOUT PROCEDURES FOR FUSE BLOWING

CAUTION: REPLACE BLOWN FUSE WITH 20 AMPERE FUSE.

 

 

 

 

 

 

 

 

 

PROBLEMS

 

 

 

CAUSES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fuse blows immediately after

 

 

 

 

 

 

 

the door is closed.

 

 

 

 

 

 

 

 

 

 

 

Improper operation of the primary interlock, secondary

 

 

 

 

 

 

 

 

 

 

Fuse blows immediately after

 

 

 

interlock switches and/or the interlock monitor switch.

 

 

 

the door is opened.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fuse blows when the door is closed and START

 

 

 

Malfunction of the high voltage transformer; the high

 

 

 

key is touched.

 

 

 

voltage capacitor including the diode, the magnetron,

 

 

 

 

 

 

 

the blower motor or the circuit board.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTES:

If the fuse is blown by an improper switch operation, replace the all Interlock switches, PCB Ass’y and the fuse at the same time. After replacing the the all Interlock switches, PCB Ass’y,Fuse with new ones, make sure that they are correctly connected.

Check for microwave energy leakage according to INTERLOCK ADJUSTMENT PROCEDURES on page 7-12 when the primary interlock, secondary interlock switches and/or the interlock monitor switches are adjusted or replaced.

7-18

Page 29
Image 29
GE MV1526W, MV1526B service manual Power Level, RELAY2, Checkout Procedures for Fuse Blowing

MV1526W, MV1526B specifications

The GE MV1526B and MV1526W are advanced medium-voltage switchgear solutions designed for reliability, efficiency, and safety in various industrial and utility applications. These models from General Electric (GE) represent a significant leap forward in switchgear technology, incorporating state-of-the-art features and benefits for modern electrical systems.

One of the primary features of the MV1526B and MV1526W is their robust construction, designed to withstand the harshest environmental conditions. Built with high-quality materials, these models ensure long-lasting performance while providing superior protection against external elements such as moisture, dust, and extreme temperatures. This durability ensures low maintenance costs and extended service life, making them an excellent choice for long-term investments.

Both models utilize vacuum circuit breaker technology, which is critically important for medium-voltage applications. This technology minimizes arcing during operations, significantly enhancing safety and reducing maintenance periods. The vacuum interrupters are designed to provide superior fault interruption capabilities, ensuring that the electrical systems are safeguarded against overloads and short circuits.

The MV1526B and MV1526W also showcase GE's advanced digital controls and monitoring capabilities. Features such as real-time diagnostics and remote monitoring allow for proactive maintenance, enabling operators to identify potential issues before they escalate. This not only enhances system reliability, it also minimizes downtimes, ultimately resulting in greater operational efficiency.

Another significant characteristic of these models is their compact design. The MV1526B and MV1526W applications are engineered to maximize space while maintaining operational functionality. This compact footprint is particularly advantageous in environments where space is a premium, allowing for easier installations and future expansions.

Moreover, the flexibility of configuration is a standout feature of the MV1526 series. Users can customize their switchgear layout based on specific operational needs, accommodating various configurations for different applications. This adaptability makes the MV1526B and MV1526W suitable for a range of sectors, including energy, manufacturing, and commercial facilities.

In conclusion, the GE MV1526B and MV1526W models exemplify cutting-edge technology and engineering excellence, providing industrial and utility applications with versatile, reliable, and safe medium-voltage solutions. Their advanced features, including vacuum circuit breaker technology, digital monitoring capabilities, robust construction, and compact design, make them ideal choices for modern electrical infrastructure.