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产品名称
NDFY-III Wireless secondary pressure drop and load tester
Affiliate classification
Transformer detection class
Quantity
-
+
Product description
Product parameters
Reference standard: SD109-1983.
Features:
● Distributed wireless synchronous measurement of volt-ampere phase isoelectric parameters, wireless synchronous measurement of six-channel voltage amplitude phase, single-phase or three-phase measurement of secondary voltage drop, automatic calculation of ratio difference, angular difference;
● It can be used as a secondary load online tester and a three-phase volt-ampere phase when used alone;
● It has the function of resisting harmonic interference, and still maintains measurement accuracy in the case of harmonics;
● Current amplitude phase measurement can be as low as 1mA. It is very suitable for substation main transformer load test and new station or small station current measurement.
The main parameters:
|
Types of
|
Measuring range
|
Unit
|
Error
|
Resolution
|
|
Comparison
|
0.001～99.9
|
%
|
DX=±（X×1% +Y×1 %±0.02%）
|
0.001
|
|
Angle difference
|
0.01～999.9
|
′
|
DY=±（X×1% +Y×1%±0.5分）
|
0.01
|
|
PT second admittance
|
1.00～99.9
|
mS
|
±1%±0.02mS
|
0.01
|
|
CT secondary impedance
|
0.1～50
|
Ω
|
1%+2 Words
|
0.01
|
|
Voltage
|
5～600V
|
V
|
0.5%×Reading +5 Words
|
0.1V
|
|
Current
|
0.001～6A(Scalable)
|
A
|
0.5%×Reading +5 Words
|
0.0001A
|
|
Active power
|
0.005～3600
|
W
|
0.5%×Reading(PF=1)
|
0.1W
|
|
Reactive power
|
0.005～3600
|
VAR
|
0.5%×Reading(PF=0)
|
0.1Var
|
|
Frequency
|
45～65
|
Hz
|
0.02Hz
|
0.01Hz
|
|
Phase
|
0～360
|
°
|
+0.1°
|
0.1°
|
Key words
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