255-250-DNDN-UL YOKOGAWA, 255-250-DNDN-UL Datasheet - Page 34

• Manufacturer Part Number: 255-250-DNDN-UL
• Description: FREQUENCY PANEL METER MODEL 255-2 55-65HZ 240VAC UL
• Manufacturer: YOKOGAWA

Specifications of 255-250-DNDN-UL

• Meter Range: 55Hz To 65Hz
• Meter Size/dimensions: 2.5" X 2.5"
• Scale Length: 2.06"
• Meter Function: Frequency

28
S
C
A
L
E
O
N
L
Y
Series 280 DC Voltmeters
Specifications
These meters are designed to meet all
applicable sections of ANSI C39.1.
Accuracy: ±2% of full scale, DC meters;
±3% with 60 Hz sine wave at 25ºC for AC
rectifier type meters.
DC VOLTMETERS
DC VOLTMETERS — 0-1 mA, FOR USE WITH EXTERNAL RESISTORS, RESISTORS NOT
INCLUDED (SEE PAGE 29 FOR RESISTORS)
Series 280 Thin Edgewise Panel Meters
150-0-150 Volts
15-0-15 Volts
30-0-30 Volts
0-100
0-150
0-200
0-300
0-10
0-15
0-30
0-50
0-500 Volts
0-600 Volts
0-750 Volts
Rating
Scale
and
Volts
Volts
Volts
Volts
Volts
Volts
Volts
Volts
Size
1000 Ohms/Volt
Ohms ±15%
Resistance
43.2 Ohms
43.2 Ohms
43.2 Ohms
Terminal
286 011 MTMT
286 011 NDND
286 011 NLNL
286 011 NTNT
286 011 PKPK
286 011 PZPZ
. . . . . . . . . .
. . . . . . . . . .
286 012 NDND
286 012 NLNL
. . . . . . . . . .
286 171 FASF
286 171 FASJ
286 171 FASM
Horizontal
Scale
Edgewise Panel Meters
1
Overload: DC Voltmeters — 20% momentary
and sustained; DC ammeters (momentary) —
10 times the rated current for 10 consecutive
intervals of .5 second with 1 minute intervals
between successive applications; DC
ammeters (sustained) — 20% for 6 hours.
Dielectric (Hi-pot): 1500 V
sizes: 2600 V
Response Time: 3 seconds max for µA
meters, 2 seconds (max.) for mA, A, mV, & V
meters.
Pointer Color: red standard.
1
⁄
2
286 013 MTMT
286 013 NDND
286 013 NLNL
286 013 NTNT
286 013 PKPK
286 013 PZPZ
. . . . . . . . . .
. . . . . . . . . .
286 014 NDND
286 014 NLNL
. . . . . . . . . .
286 173 FASF
286 173 FASJ
286 173 FASM
Vertical
Scale
RMS
for 3
1
⁄
2
" size.
Horizontal
287 011 MTMT
287 011 NDND
287 011 NLNL
287 011 NTNT
287 011 PKPK
287 011 PZPZ
287 011 RLRL
287 011 RXRX
287 012 NDND
287 012 NLNL
287 012 PZPZ
287 171 FASF
287 171 FASJ
287 171 FASM
RMS
Scale
(Taut Band)
for 1
1
⁄
2
2
" and 2
1
⁄
2
287 013 MTMT
287 013 NDND
287 013 NLNL
287 013 NTNT
287 013 PKPK
287 013 PZPZ
287 013 RLRL
287 013 RXRX
287 014 NDND
287 014 NLNL
287 014 PZPZ
287 173 FASF
287 173 FASJ
287 173 FASM
1
⁄
2
Vertical
"
Scale
Bezel and Mounting Hardware: Included
with meter. See below for additional
information.
Overshoot: 25% (max.) for 1
40% (max.) for 2
Scale Data: All three sizes designed for 53
degrees deflection. Scale lengths are 1
size = 1.25", 2
Note: All scales have linear distributions.
10V, 15V, 30V Rectifier scales will be non-linear.
Dimensions: See page 40.
288 011 MTMT
288 011 NDND
288 011 NLNL
288 011 NTNT
288 011 PKPK
288 011 PZPZ
288 011 RLRL
288 011 RXRX
288 012 NDND
288 012 NLNL
288 012 PZPZ
288 171 FASF
288 171 FASJ
288 171 FASM
Horizontal
1
Scale
⁄
2
" size = 1.93", 3
1
⁄
2
" and 3
3
1
⁄
2
" sizes.
1
⁄
1
2
⁄
2
" size,
1
288 013 MTMT
288 013 NDND
288 013 NLNL
288 013 NTNT
288 013 PKPK
288 013 PZPZ
288 013 RLRL
288 013 RXRX
288 014 NDND
288 014 NLNL
288 014 PZPZ
288 173 FASF
288 173 FASJ
288 173 FASM
⁄
2
" size = 2.70".
Vertical
Scale
1
⁄
2
"