Mitsumi electronic 55K Manuale Utente

41

Power supply side power 
P

1

At R2/L1, S2/L2 and T2/L3 
and across R2/L1-S2/L2, 
S2/L2-T2/L3, and T2/L3-R2/
L1

Electrodynamic type 
single-phase wattmeter

P

1

 = W

11

 + W

12

 + W

13

 

(3-wattmeter method)

Power supply side power 
factor Pf

1

Calculate after measuring power supply voltage, power supply side current and power supply side 
power.

Converter output side 
voltage

Across P/L+-N/L-

Moving-coil type 
(such as tester)

Converter LED display lit
1.35 

× V

1

Maximum 380V (760V) during 
regenerative operation

Reset

Across RES (+) -SD

Moving-coil type (Tester, 
etc. may be used) 
(Internal resistance: 
50k

Ω or larger)

20 to 30VDC when 
open.
ON voltage: 1V or 
less (Note)

SD is common.

Alarm signal

Across A-C 
Across B-C

Moving-coil type  
(such as tester)

Continuity check

<At OFF>

<At ON> 

Across A-C: Discontinuity Continuity
Across B-C: Continuity

Discontinuity

Note: When a 24VDC power supply is connected across P24-SD.

3

 

V

1

 

×

 

I

1

P

1

Pf

1

100

×

%