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4-34
4-3 Wiring Conforming to EMC Directives
4
System Design
Surge Absorbers
• Use surge absorbers to absorb lightning surge voltage and abnormal voltage from power supply
input lines.
• When selecting surge absorbers, take into account the varistor voltage, the allowable surge
current and the energy.
• For 200-VAC systems, use surge absorbers with a varistor voltage of 620 V.
• The surge absorbers shown in the following table are recommended.
Note 1.
Refer to the manufacturers' documentation for operating details.
Note 2.
The surge immunity is for a standard impulse current of 8/20
μ
s. If pulses are wide, either
decrease the current or change to a larger-capacity surge absorber.
Dimensions
Equalizing Circuits
Manufacturer
Model
Surge immunity
Type
Remarks
Okaya Electric
Industries Co., Ltd.
R·A·V-781BWZ-4
700 V
±
20%
2500 A
Block
Single-phase
100/200 VAC
Okaya Electric
Industries Co., Ltd.
R·A·V-781BXZ-4
700 V
±
20%
2500 A
Three-phase
200 VAC
1 2 3
28
4.5
28.5
11
5.5
41
200
4.2 dia.
Three-phase BXZ Series
2
1
28
4.5
28.5
11
5.5
41
200
4.2 dia.
Single-phase BWZ Series
Three-phase BXZ Series
Single-phase BWZ Series
Summary of Contents for R88D-GT series
Page 20: ...18 Table of Contents ...
Page 234: ...3 133 3 8 Reactor Specifications 3 Specifications ...
Page 448: ...7 37 7 5 Manual Tuning 7 Adjustment Functions ...
Page 474: ...8 25 8 5 Periodic Maintenance 8 Troubleshooting ...
Page 475: ...Chapter 9 Appendix 9 1 Connection Examples 9 1 9 2 Parameter Tables 9 11 ...
Page 509: ......