MODEL: LTPF
Computation: Phase angle detection
Overrange output: Approx. -10 to +120 % at 1 – 5 V
Zero adjustment: -5 to +5 % (front)
Span adjustment: 95 to 105 % (front)
INPUT SPECIFICATIONS
Note: A device which employs different measuring methods
may show different outputs from that of M-System’s with
distorted input waveforms.
Frequency: 50 or 60 Hz
■ VOLTAGE INPUT
Operational range: 85 – 120 % of rating
Overload capacity: 150 % of rating for 10 sec., 120 %
continuous
Input burden: 0.5 VA
■ CURRENT INPUT
Operational range: 10 – 120 % of rating
Overload capacity: 4000 % of rating for 1 sec., 2000 % for 4
sec., 120 % continuous
Input burden: 0.1 VA (input 1 A)
0.2 VA (input 2 A)
0.5 VA (input 5 A)
Input range:
Lag 0.5 – 1 – lead 0.5
Lead 0.5 – 1 – lag 0.5
OUTPUT SPECIFICATIONS
• DC Current: -10 – +20 mA DC
Span: Min. 1 mA, max. 20 mA
Offset: Max. 1.5 times span
Load resistance: Output drive 10 V max.
• DC Voltage: -10 – +12 V DC
Minimum span: 5 mV
Offset: Max. 1.5 times span
Load resistance: Output drive 1 mA max. at ≥ 0.5 V
12
OUT
20mA
1
0.5
(Lead)
0.5
(Lag)
0
OUT
+10V
4
12
OUT
20mA
0
OUT
+10V
4
-10V
-10V
1
0.5
(Lead)
0.5
(Lag)
1
0.5
(Lead)
0.5
(Lag)
1
0.5
(Lead)
0.5
(Lag)
■
OPERATION DIAGRAM (example)
• Negative in lag, positive in lead
• Negative in lead, positive in lag
Remark: When there is no input voltage or 5% or less of
rated input current , the output may become unstable (hunting).
INSTALLATION
Power Consumption
•AC Power input: Approx. 2 VA
•DC Power input: Approx. 2 W (18 mA at 110 V)
Operating temperature: -10 to +55°C (14 to 131°F)
Operating humidity: 30 to 85 %RH (non-condensing)
Mounting: Surface or DIN rail
Weight: 450 g (0.99 lbs)
PERFORMANCE in percentage of span
Accuracy: ±2 % with input 1 – 0.866, balanced load
±4 % with input 0.866 – 0.5, balanced load (at 23°C ±10°C
or 73.4°F ±18°F, 45 – 65 Hz)
Magnetic field (ext. origin) effect: ±2 % (400 A/m)
Response time: ≤ 2 sec. (0 – 100 % ±1 %)
Ripple: 0.5 %p-p max.
Line voltage effect: ±1 % over voltage range
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 2000 V AC @ 1 minute
(voltage input to current input to output to power to ground)
Impulse withstand voltage: 1.2 / 50 μsec., ±5 kV
(input to output or ground)
STANDARDS & APPROVALS
CE conformity:
EMC Directive (2004/108/EC)
EMI EN 61000-6-4
EMS EN 61000-6-2
Low Voltage Directive (2006/95/EC)
EN 61010-1
Measurement Category II (input, output)
Installation Category II (power)
Pollution Degree 2
Input to output or power: Reinforced insulation (550 V)
Output to power: Reinforced insulation (300 V)
IEC Standard: IEC 60688
Rugghölzli 2
CH - 5453 Busslingen
Tel. +41 (0)56 222 38 18
Fax +41 (0)56 222 10 12
www.sentronic.com
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