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■ Characteristics
Item
Time accuracy
100 ppm (25 C)
Insulation resistance
100 M min. (at 500 VDC) between
current-carrying metal parts and ex-
posed non-current-carrying metal
parts, and between the backlight pow-
er supply and timer input terminals/re-
set terminals for backlight models
Dielectric strength
1,000 VAC, 50/60 Hz for 1 min between
current-carrying metal parts and ex-
posed non-current-carrying metal
parts and between the backlight power
supply and timer input terminals/reset
terminals for backlight models
Impulse withstand
4.5 kV between current-carrying termi-
voltage
nal and exposed non-current-carrying
metal parts
Noise immunity
Square-wave noise generated by noise simulator (pulse width: 100 ns/1 s, 1-ns rise)
600 V (Between timer input terminals/
Between reset terminals)
480 V (Between the backlight power
supply terminals for backlight models)
Static immunity
8 kV (malfunction)
Vibration resistance
Malfunction: 0.15-mm single amplitude at 10 to 55 Hz for 10 min each in 3 directions
Destruction: 0.375-mm single amplitude at 10 to 55 Hz for 2 hrs each in 3 directions
Shock resistance
Malfunction: 200 m/s
Destruction: 300 m/s
EMC
(EMI)
Emission Enclosure:
(EMS)
Immunity ESD:
Immunity RF-interference from AM Radio Waves:
Immunity RF-interference from Pulse-modulated Radio Waves:
Immunity Conducted Disturbance: EN61000-4-6: 10 V (0.15 to 80 MHz) (level 3)
Immunity Burst:
Degree of protection
Front panel:
Terminal block: IP20
Weight (see note)
No-backlight model: Approx. 60 g
Backlight model: Approx. 65 g
Note: Weight includes waterproof packing and flush mounting bracket.
■ Reference Value
Item
Battery life
10 years min. with continuous input at
25 C (lithium battery)
H7ET-NV@-@
H7ET-NV@-H@
100 M min. (at 500 VDC) between
current-carrying metal parts and ex-
posed non-current-carrying metal
parts and between timer input termi-
nals and reset terminals
3,700 VAC, 50/60 Hz for 1 min between
timer input terminals and exposed non-
current-carrying metal parts
2,200 VAC, 50/60 Hz for 1 min between
reset terminals and exposed non-cur-
rent-carrying metal parts and between
timer input terminals and reset termi-
nals
4.5 kV between current-carrying termi-
nal and exposed non-current-carrying
metal parts
3 kV between timer input terminals and
reset terminals
1.5 kV (Between timer input termi-
nals)
500 V (Between reset terminals)
2
3 times each in 6 directions
2
3 times each in 6 directions
EN61326
EN55011 Group 1 class B
EN61326
EN61000-4-2: 4 kV contact discharge (level 2)
EN61000-4-3: 10 V/m (80 MHz to 1 GHz) (level 3)
EN61000-4-3: 10 V/m (900 MHz
EN61000-4-4: 2 kV power line (level 3)
IP66, NEMA4 with waterproof packing
Approx. 60 g
Value
The battery life is calculated according to the conditions in the left column and
therefore is not a guaranteed value. Use these value as reference for mainte-
nance or replacement.
H7ET-NFV@-@
100 M
current-carrying metal parts and ex-
posed non-current-carrying metal
parts
1,000 VAC, 50/60 Hz for 1 min between
current-carrying metal parts and ex-
posed non-current-carrying metal
parts
4.5 kV between current-carrying termi-
nal and exposed non-current-carrying
metal parts
500 V (Between timer input terminals/
Between reset terminals)
8 kV air discharge (level 3)
5 MHz) (level 3)
2 kV I/O signal line (level 4)
Approx. 60 g
Note
Self-powered Time Counter
H7ET-N@-@
min. (at 500 VDC) between
H7ET
C-19
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