Introduction
Model BWY—804 Transformer Thermoregulator is a new generation product derived from Model BWY—802/803 one in compliance with JB/T 6302-92 Standard of Pressure-type Thermoregulator For Transformer issued by The National Machinery Ministry. It is suitable for taking measurement and control of oil temperature in a medium-sized or Large-sized transformer.
The BWY—804 has the following new points:
Wide scope of application
To meet the need of intelligent control in an unattended transformer house, the BWY—804 can output following controlling signals
(1) Pt100 platinum resistance signal;
(2) 4-20mA direct current signal;
(3) RS232/RS485 communication interface。
2. Four sets of switch, which can be set within a whole span, are employed to respectively control over the transformer cooling system, overheating alarming and tripping, etc.
Main technical parameters
1. Normal operating conditions:(-30~+55)℃
2. Measuring range:(0-150)℃
3. Measurement accuracy:grade 2.0
4. Bulb and mounting screw size: φ14×150mm;M27×2
5. Control function:
(1) setting range: adjustable within the whole span
(2) setting accuracy:±4℃
(3) switch difference:6±2℃
(4) rated power:AC 220V/5A
(5) standard set point:K1=55℃ K2=65℃ K3=80℃ K4=120℃
6. Ouput: Pt100 platinum resistance signal;DC4-20mA, 0-5V or 1-5V signal;
7. Shielding grade:IP55
Range: 0~150℃
Accuracy: 2.0
STANDARD PERSET VALUE OF SWITCH: K1=55℃ K2=65℃ K3=80℃ K4=120℃
Output signal: Pt100
Get A Free Quote