GE TRANSFIX DGA 500, User Manual

Page: 7 / 28

MA-014 - TRANSFIX DGA 500 User Guide – Rev 1.1 13-Oct-15 Page 7 of 28
3 TECHNICAL SPECIFICATION
The product meets the following technical specification as outlined in Table 3—1.
Table 3—1: Technical specification
PARAMETER VALUE/MEETS
GAS MEASURED MEASUREMENT RANGE (ppm) and accuracy
Hydrogen (H
2
) 5 – 5,000
Accuracy ± 5% or ± LDL (whichever is greater)
*1
Methane (CH
4
) 2 – 50,000 A
ccuracy ± 5% or ± LDL (whichever is greater)
*1
Ethylene (C
2
H
4
) 2 – 50,000
Accuracy ± 5% or ± LDL (whichever is greater) *1
Acetylene (C
2
H
2
) 0.5 – 50,000 A
ccuracy ± 5% or ± LDL (whichever is greater) *1
Carbon Monoxide (CO) 2 – 50,000
Accuracy ± 5% or ± LDL (whichever is greater)
*1
Moisture (H
2
O) 0 – 100% RS (given in ppm)
ENVIRONMENTAL
External temperature range DGA 500 (AC only)
−40 °C to 55 °C DGA 500 Universal Power Supply:
−25 °C
*2
to 55 °C
Oil temperature range −20 °C to 120 °C
*3
Altitude Up to 2000 m
Atmospheric pressure Up to 1050 mbar
Operating humidity 10 – 95% RH non-condensing
Enclosure IP55
Weight 72 kg (159 lb)
MEASUREMENT FREQUENCY Variable – Once per hour to once every 4 weeks
POWER REQUIREMENTS
DGA 500 (AC only) 115/230 V AC
*4
(factory set), 50/60 Hz, 8 A Max
Single phase Alarm Relays: NO and NC
provided*
4
3 A 250 V AC
150 mA 300 V DC, 200 mA 125 V DC, 3 A 30 V DC
Fuses*
6
10 A 500 V (Cooper Bussmann BAF), 10x38 mm
DGA 500 Universal Power Supply
Nominal voltage
100–230 V AC, 5 A Max
100–220 V DC, 5 A Max
Voltage range 90–253 V AC
90–242 V DC
Frequency 45–65 Hz
Single phase Alarm Relays: NO and NC
provided*
4
3 A 250 V AC
150 mA 300 V DC
*5
, 200 mA 125 V DC, 3 A 30 V DC
Fuses*
6
10 A 600 V AC (Cooper Bussmann CUBEFuse, TCF10RN)
*
1
Note: Accuracy quoted is the accuracy of detectors during calibration; gas-in-oil measurement
accuracy may also be affected by sampling and/or oil type.
*
2
Note: The Power Supply Unit (PSU) is type tested to −40 °C cold start.
*
3
Note: Based on testing carried out using VOLTESSO 35 mineral oil over a ¼ in. pipe run of 10 metres or
less from oil supply or return valve to product connection point, and on transformer oil supply valve
volumes of 200ml or less.
*
4
Note: A suitably rated fuse must be added to the circuitry in accordance with local regulations.
*
5
Note: Maximum DC breaking capacity for a resistive load.
*
6
Note: Use only the approved and recommended fuse to ensure continued fire protection and
compliance.